Rubber expansion joints - MF · PDF fileRubber expansion joints General description of rubber...

Rubber expansion jointsGeneral description of rubber expansion joints

Expansion joints are used in appli-ances, machinery, apparatus andpipe systems where space is limited:

■ to compensate for movement■ to compensate for expansion

caused by differences in tempera-ture

■ to reduce tension■ to absorb noise and vibration

transmission■ to compensate for ground, and

foundation settlement■ to compensate for pipeline

movement aboard ships■ as adapters to compensate for

installation inaccuracies■ as dismantling pieces for fittings■ as elastic sealing elements, where

pipelines pass through walls

Rubber expansion joints are used in avariety of industrial applications:

■ Machine engineering■ Domestic industry■ Processing plant engineering■ Power station technology■ Shipbuilding

STENFLEX® rubber expansion jointshave served with distinction for morethan 45 years. They are the preferredflexible pipe connection elements ofchoice in manufactured appliances,machinery, apparatus and piping en-gineering.

Constant further development and innovations update our product rangeto meet the needs of current andchanging markets. Numerous patentapplications and on-going optimiza-tion of the formulae for our rubbergrades ensure that our customers always receive state-of-the-art pro-ducts; highly reliable and of superiordurability.

The large-scale industrial manufac-ture of the rubber bellows, constantcontrol of compliance with all manu-facturing, business and qualityprocesses in line with EN ISO9001:2008 and decades of experi-ence in the development and manu-facture of rubber expansion joints: allthis guarantees a uniform product ofthe highest standard. It underlinesthe STENFLEX® Quality Claim.

Nearly all nuclear plants throughoutEurope are equipped withSTENFLEX® expansion joints. Manyof our rubber expansion joints have

Purpose

11

been used in a large variety of appli-cations. They have served on site introuble-free operation for decades. STENFLEX®

rubber expansion joints have passednational and international type ap-provals and suitability tests and arecertified by numerous classificationsocieties.

Our engineers in the fields of me-chanical-, and processing-plant engi-neering work hand-in-hand with ourmodern R & D department. They arealways available for technical consul-tation and ready to help in solvingspecific application problems at anytime.

Universal rubber expansion jointsStructure:Rubber bellows with connection parts (flange or thread)

Movement absorption:Axial, lateral, angular and simultaneous movement absorption is possible. Uni-versal expansion joints with two bellows and a connecting pipe are used to ab-sorb large movement.

Fixed points:To absorb axial force a pipe’s fixed points must be robust. Pipe routing must becorrect.

Lateral rubber expansion joints:Structure:Rubber bellows with flanges and laterally movable restraints.Movement absorption:Lateral shift of the expansion joints is possible. The restraint absorbs axial re-action force and relieves the pressure on the pipe’s fixed points. In double jointsthe type of restraint allows for movement on one plane; in ball joints it allows forall-around movement. Lateral expansion joints with two bellows and a connect-ing pipe are used to absorb large movement.Fixed points:Only light fixed points are required to absorb force from lateral movement andfriction force.

Angular rubber expansion joints:Structure:Rubber bellows with flanges and hinge restraint. The rotating axis of the hinge re-straint is in the middle of the bellows.Movement absorption:Angular movement of the expansion joint is possible. The angular joints regulate adefined angular movement, absorb axial reaction force and relieve the pressure onthe pipe’s fixed points. We differentiate between angular expansion joints with a hinge (bellows’ angularmovement guided on one plane) and angular expansion joints with a cardan hinge restraint (bellows movement guided on two planes). Angular expansion joints withconnecting pipe are used to compensate large movements.Fixed points:Only light fixed points are required to absorb angular movement force and friction force.

12

Development/DesignSTENFLEX® rubber expansion jointsare rated by state-of-the-art comput-ing techniques (which include the Fi-nite Element Method). They are opti-mized under experimental conditions.Our development engineers use themost up-to-date development toolsthroughout the development stage tovalidate the construction process interms of form, function and installa-tion. This means we offer our cus-tomers the following advantages:

■ Design and development in linewith the specific requirements, re-sulting in safe and extremelydurable expansion joints

■ Efficient products by incorporatingsuperior product functionality

■ Structures that are easy to install■ Reduced lead times for special de-

signs

Versions

axia

lla

tera

lan

gula

r

The excellent features of STENFLEX®

rubber expansion joints include out-standing absorption of movementand good vibration damping proper-ties. Depending on the particular ex-pansion joint type, a maximum of theforces produced by the pipe internalpressure is absorbed by the specificdesign of the expansion joint itself,and not passed on to neighbouringsystem components.

Rubber expansion joints differ accord-ing to the following criteria:■ type (universal/lateral/angular ex-

pansion joints)■ pipe connection type (flange,

thread)■ rubber quality of the bellows (rated

to the media transported in thepipes)

■ bellows structure (rated to thepressure and temperature load)

Our expansion joints are deliveredready to install. Together with thestandard versions featured in the

catalogue, special versions can alsobe developed and produced on re-quest for special operating condi-tions. Connection parts (that deviatefrom DIN) such as ISO, ANSI, BS, VGand SAE standards etc. are also pos-sible.


Rubber bellows

Material qualitiesSTENFLEX® rubber bellows are madeof elastic synthetic elastomers. Theirwide range of industrial applicationsare covered with combinations of thefour standard elastomer qualitiesEPDM, CIIR, NBR and CR togetherwith tensile reinforcing elements.Elastomers are basic materials thatare processed by adding sulphur,fillers, plasticizers and aging protec-

tion agents to produce rubber com-pounds suitable for vulcanization.Under the influence of temperatureand pressure the vulcanizationprocess (cross linkage) converts therubber compounds into rubber grades– with their typical elastic properties.Material properties such as hardness,elasticity, tensile strength, tempera-ture resistance, etc., are rated to the

corresponding application. Docu-ments detailing media resistance ofthe rubber grades are available on re-quest.

StructureSTENFLEX® rubber bellows havebeen optimized by calculation andverified by experimentation to pro-duce highly elastic pressure-resistantbellows with flow contours to meetdemanding absorption tasks.

Rubber bellows have a three-ply wallstructure:

■ inner ply (core) of medium-resis-tant rubber compound

■ intermediate ply of rubber com-pound with tensile elements for re-inforcement

■ outer ply (cover layer) of weather-proof rubber compound

The arrangement of the tensile rein-forcing elements is ascertained bycalculation and experimentation toensure that the force of pressure with-in the bellows can be absorbed. Apermanent bond exists between theembedded tensile reinforcing ele-ments and the rubber material.

The rubber grades used for the inner-and outer ply are empirically definedrubber compounds rated to certainproperties (media resistance, ozoneresistance, UV resistance, elasticity,wear-proof characteristics, etc.)

Properties Applications

13

Rubbergrade

EPDMEthylene

propylene

diene

rubber

CIIRChloro

isobutylene

isoprene

rubber

NBRNitril-

butadiene

rubber

CRPolychloro-

prene

rubber

Water, hot water, cooling water,sea water, steam, acids, lyes,pickling lyes, hypochlorite so-lutions etc. Special type AS inheating systems (as per DIN4809 up to +110 °C)

Recommended for drinkingwater supply systems

Municipal gas, fuel oil, mineraloil, blast furnace waste gas,compressed air systems,cooling water with antifreezingcompound

weather-proof outer ply (coverlayer)

Heat- and weather-proof rubber grade with special resis-tance to highly oxidizing media and very many chemicals(not oil-resistant). Temperature resistance in continuous op-eration* from –40 °C to +100 °C.Resistant to hot water up to +100 °C.

Rubber grade complying with the latest hygiene directivesfor drinking water systems as per KTW recommendationby the German Health Department (KTW = Plastics fordrinking water). Impermeable to gas. Temperature resistance in continuous operation* –40 °C to+90 °C. Resistant to hot water up to +90 °C.

Quality with excellent oil resistance, very resistant toswelling, e.g. even in contact with petrol/benzole mixture,impermeable to gas for hydrocarbons. Temperature resis-tance in continuous operation* –30 °C to +100 °C, resis-tant to hot water up to +70 °C.

Multi-purpose rubber grade with good oil, weather andflame resistance, very good resistance to ageing. Resistantto various organic and inorganic chemicals. Impermeableto gas for hydrocarbons. Temperature resistance in contin-uous operation* from –30 °C to +100 °C, resistant to hot water up to +70 °C.

Tradename

Buna APKeltanVistaton

Butyl

Perbunan

NeopreneBaypren

orange

white

red

--

STENFLEX®colour code

*The given temperature for continuous operation refers solely to the rubber grade. When reinforcements or other filling material is embedded, the temperature resistance in continuous operation increases.

Connection parts

able pipes, flanges and threads.

FlangesFlanges for rubber expansion joints inthe series A, AR, AS, B, E, G, GR-SAER and RS have a specially turnedgroove designed to accommodatethe rubber rim. They are fitted in a ro-tating position at the bellows to sim-plify mounting to the pipeline.

STENFLEX® rubber expansion jointsin the series C, D, and W have press-on retaining flanges.

The flanges have a stabilizing collaron the side facing the bellows (mould-ed bead or welded rim). This stabi-lizes the rubber bellows and ensurescompliance with safety spacing be-tween the ends of the screws and therubber bellows throughout the entirerange of pressure and movement. Thepurpose is to eliminate the risk ofdamage to the rubber bellows causedby the screw ends. Special flangesare fitted with stabilizer rings.

Standard screws can be used be-cause the flanges are drilled forthrough-bolts according to EN 1092(DIN 2501). Other pitch circles and

The following special versions arepossible on request:■ All-round machined flanges ■ Special materials deviating from the

standard data sheet (stainlesssteels, aluminum, plastic, etc.)

Flanges made of unalloyed steels aregalvanized and blue chromated orgiven an anti-corrosion prime coating.Stainless steel is used to meettougher corrosion protection require-ments. Other materials and forms ofcorrosion protection (hot-dip galva-nizing, special varnish, coating etc.)can be supplied on request.

14

pumps, tanks etc., by flanges orscrewed union. The connections arestandardized to fit commercially avail-

STENFLEX® rubber expansion jointsare supplied ready for installation.They are connected to pipes, fittings,

bores are possible e.g. to ANSI (ASA),BS, SAE and for ventilation systems.

Flanges vary according to expansionjoint type (universal, lateral and angu-lar expansion joints) and size as fol-lows:

■ Standard flanges■ Flanges with molded ears■ Flanges with welded ears■ Oval flanges■ Flanges with two pitch circles■ Flanges made to other standardsStandard flanges for rubber expan-sion joints are machined to produce afit within the tolerances.

Abbreviation as per DIN EN (DIN)Flange material Material No. as per DIN EN

Unalloyed steel 1.0038 S235JR1.0577 S355J2

Stainless steel 1.4541 X6CrNiTi18-101.4571 X6CrNiMoTi17-12-21.4404 X2CrNiMo17-12-2

Standard flange with turned groovefor rubber rim and stabilizing collar(universal expansion joint)

Flange with second pitch circle for therestraints (lateral expansion joints)

Oval flange (angular expansion joints) Flange as per SAE standard (typeGR-SAE)

Flange with molded ears for the re-straints (lateral expansion joints)

Flange with welded ears or moldedears for the restraints (lateral expansion joints)


Type AS-5 with male thread as per ISO 7-1

Type AG-5 with union nut as per ISO 228-1

Designation as per DIN EN(DIN)

Material threaded part Material No. as per DIN EN

15

Restraints

operating parameters of the corre-sponding machinery or equipmentmust be known to calculate the de-gree of restrain correctly. Standard re-straints are available for the lateraland angular expansion joint program.They are calculated on the basis of

Restraints are used for lateral and an-gular expansion joints. The restraintsabsorb the axial reaction force pro-duced by internal pressure. Even so,the connected pipe must be equippedwith light fixed points to absorb mo-mentum force. The precise rating and

the material strength values at +50 °C.Reduced strength values are taken in-to consideration at higher tempera-tures.

Tie rod restraintsThere are two types of tie rod re-straints for lateral rubber expansionjoints:■ Outer restraints to absorb reaction

force from internal pressure (e.g. type A-2, AR-2, AS-2, B-2, R-2)

■ Outer and inner restraints to ab-sorb reaction force from internalpressure and vacuum (e.g. type A-4, AR-4, AS-4, B-4).

The tie rods in the flange ears for thelateral movement are carried■ by sound damping rubber sockets

up to DN 150■ by spherical washers and conical

seats as from DN 175

The tie rods, spherical washers andconical seats are galvanized and bluechromated. Stainless steel can beused for restraint elements to satisfyincreased corrosion protection re-quirement. Other anti-corrosion coat-ings (hot-dip galvanizing, special var-nish, coating) are available on re-quest.

Sound damping outer restraint (lateralexpansion joint)

Sound damping outer and inner restraint (lateral expansion joint)

Outer restraint with spherical washerand conical seat (lateral expansionjoint)

Outer and inner restraint with spherical washer and conical seat(lateral expansion joint)

Unalloyed steelTie rods – 5.6, 8.8Washers – 5, 8

Stainless steelTie rods, washers A2, 1.4057 50, 70, C3-80

A4, 1.4057 50, 70, C3-80

Designation as per DIN EN(DIN) or strength class

Material tie rod restraint Material No. asper DIN EN

Unalloyed steel 1.0038 S235JR

Stainless steel 1.4571 X6CrNiMoTi17-12-2

Threaded connectionsThreaded connections are primarilyused in domestic industry. Rubber ex-pansion joints type AG-5 and AS-5are equipped with female thread andflat seal in accordance with ISO 228-1,or with female or male thread (threadsealing) in accordance with ISO 7-1(DIN 2999).The threaded connections fortype AS-5 are made of galvanized an-nealed cast iron. Stainless steel con-nection parts are used to meet in-creased anti-corrosion requirements(type AG-5). These are also suitablefor pipes made of copper or plastic.

Restraint with welded joint bars andbolts (angular expansion joint)

16

Hinge restraintsAngular rubber expansion joints areequipped with oval flanges and weld-ed hinge restraints that consist ofjoint bars and bolts.

The hinge restraints of unalloyed steelare coated with anti-corrosion primer.Stainless steel parts are used to satisfy tougher corrosion protectionrequirements. Other materials andforms of corrosion protection (hot-dipgalvanizing, special varnish, coating,etc.,) are available on request.

STENFLEX® rubber expansion jointscan be equipped with vacuum sup-porting rings, internal guide sleeves,outer protective covers, protectivehoods or protective tubes.

Accessories

Vacuum supporting ringsDepending on diameter and type,STENFLEX® rubber expansion jointsare used for light to medium negativepressure. Vacuum supporting ringsare fitted to the inner surface of thebellows convolutions for greater neg-ative pressures (vacuum).As a rule, the supporting rings aremade of stainless steel up to DN 1000;for DN 1050 and larger, rubber-coveredsteel rings are used.

Guide sleevesNormally internal guide sleeves arenot required to reduce flow resistancebecause STENFLEX® rubber expan-sion joints have a streamlined innersurface with large transition radii (flowlines).

However, abrasive media or high flowvelocities (see diagram) with high-fre-quency vibrations or turbulence (e.g.behind a pump) require that internalguide sleeves are installed to protectthe rubber structure.

As a rule, the internal guide sleevesare made of stainless steel and are fit-ted with a flared flange. This seals theinternal guide sleeve on the one sidedirectly to the sealing face of the rub-ber bellows; on the other side of theflared flange an additional seal mustbe used against the counter flange.

In the case of purely axial movement,cylindrical guide sleeves are used. Forlateral and/or angular movement,conical internal guide sleeves are fit-ted (tapering cross section).

Rubber expansion joint with vacuumsupporting ring

Rubber expansion joint with cylindrical internal guide sleeve and additional softseal to the counter flange.

Double hinge restraint with weldedstraps and bolts (lateral expansionjoint)

Telescopic internal guide sleeves areonly used in special cases.

Being aware of the flow direction isvery important when installing expan-sion joints with internal guide sleeves.

For flow rates, above thecurve, it is advisable to installinternal guide sleeves to pro-tect the bellows. The dataare of indicative nature.Nominal diameter

Use of internal guide sleevees

Flo

w r

ate

(m/s

)

Gas

Liquid media

Unalloyed steel 1.0038 S235JR1.0577 S355J2

Stainless steel 1.4541 X6CrNiTi18-101.4571 X6CrNiMoTi17-12-2

Designation as per DIN EN(DIN)

Material hinge restraint

Material No. as per DIN EN

17


Protective coversSTENFLEX® protective covers for ex-pansion joints are used where specialoperating conditions make it neces-sary to protect the expansion jointfrom external effects, or where ad-verse operating conditions and dan-gerous flow media make it necessaryto protect the environment with apreventive splash-guard.

Application:As protective cover to prevent flamepenetration up to +800 °C for up to 30 minutes at a medium temperature of+80 °C, to maintain full operational abili-ty of the expansion joint over this period.

When used aboard ships the protec-tive cover together with STENFLEX®

rubber expansion joints complies withthe requirements of the classificationagencies.

However, the best solution is to useour special type AS which is flame-proof.

Properties■ Flame-proof■ Flexible material

Material■ Fabric

StructureFlexible protective cover of specialfabric with heat-proof insulation in-lays; ready for installation with fasten-ing screws to seal the cover.

InstallationThe expansion joint is mounted ac-cording to the prescribed installationand mounting instructions. The protec-tive cover also encompasses the pipeflanges.

Application:As protective hood under extremelyadverse operating conditions or ex-posure to the elements (extreme sun-shine), or risk of damage from exter-nal mechanical effects (sea, river, orroad traffic).

Properties■ Impact resistant■ Weather-proof■ Rigid

Material■ Stainless steel

StructureRigid protective stainless steel hood,mounted on one side (pre-mounted inthe factory).

InstallationThe expansion joint is mounted ac-cording to the prescribed installationand mounting instructions. The pro-tective hood, open at the bottom, isplaced over the expansion joint andcounter flange and screwed on oneside; the other side remains unfas-tened to give the expansion jointroom to move.

Application:Primarily for underground pipelines toprotect the expansion joint from soilingand possible earth pressure.

Properties■ Impact-proof■ Corrosion-resistant■ Rigid

Material■ Plastic■ Stainless steel

StructureRigid, cylindrical protective tube of im-pact-proof plastic or stainless steel,overlapping. With corrosion-proofscrewed union.

InstallationBefore fitting the expansion joint, theclosed protective tube is pushed overone of the two connection pipes; afterthe expansion joint has been in-stalled, the tube is pulled back overthe expansion joint and fastened inposition.

STENFLEX® flame protective cover K-1

Flame protective cover K-1 Protective hood K-3 Protective tube K-4

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Compensation systems

With more than 35 years of experi-ence in expansion joint engineering,STENFLEX® is the competent partnerfor application-orientated solutions.

STENFLEX® compensation pipepieces can be supplied on request ascomplete system solution with readymounted expansion joints. As a rule,these are angular and lateral expan-sion joints, designed according tocustomer requirements. Pipe sec-tions, bends, T-pieces and expansionjoints are put together with the neces-sary restraints, hinges, protectivecovers etc., to form a unit.

Our experts assist in the selection andoptimum arrangement of the systemcomponents to produce a compensa-tion system ready to be installed.

Compensation systems with angular expansion joints

Expansion absorption depends onthe centre-to-centre spacing L of theexpansion joints and the maximum de-flection angle α. It is calculated accord-ing to the following formula:

The deflecting pipeline must have suf-ficient play in the guide bearing to al-low for the radian measure. It is calcu-lated as follows:

L =/2

sin α /2 = L · sin α

h = L (1–cos α)

Installation with 50 % pre-tension

Compensation with STENFLEX®

type A-3 for tank settlement

U-shaped triple joint, 3 angular expan-sion joints

L-shaped triple joint, 3 angular expan-sion joints

3D triple joint, 2 cardan hinged restraint expansion joints, 1 angularexpansion joint

Z-shaped double joint, 2 angular ex-pansion joints

STENFLEX® angle balanced system with type C expansion joints

Diagram showing angle balanced system with rubberexpansion joints

Symbols for a quick product selection

25

DINEN ANSI

BS VG SAE

ISO

Expansion joint to absorb axial movement

Expansion joint to absorb lateral movement

Expansion joint to absorb angular movement

Universal expansion joint toabsorb simultaneous movement in all three directions

Maximum product pressurerate

Flange connections

Threaded connection to ISO

Resistant to hot water (combined with temperature symbol)

Suitable for noise and vibration absorption

Maximum temperature

Suitable for drinking water

Suitable for acids and lyes

Suitable for oils or fatty media

Suitable for sea water

Suitable for sewage, and brackish water withsuspended solid particles

Suitable for gaseous media

Flame-proof

The easy-to-find list: symbols and their meaning. The colour bar of the following data sheets indicate small symbols that illustrate the special features of the corresponding types, for easy pre-selection.


19

130°

Applications/Possible uses/Industries

110Reducing tension

Absorbing axial movement

Absorbing lateral movement

Absorbing angular movement

Absorbing simultaneous movement

Double or triple joint systems for absorbing large lateral movement

Vibration damping

Sound muffling

Installation and dismantling aid

To compensate for installation inaccuraciesGroundwater sealing where pipelinespass through walls (buildings, tanks)

A-1

AR

-1

AS

-1

AG

-5

AS

-5

B-1

C-1

C-2

D-1

1, D

-42

GR

-SA

E

R-1

RS

-1

A-2

, A-4

AR

-2, A

R-4

AS

-2, A

S-4

B-2

, B-4

C-3

1

C-3

2

C-3

5

E, G

R-2

RS

-2

A-3

AS

-3

C-4

1

C-4

2

W-1

, W-2

Ap

plic

atio

ns

Basic expansion joint types

STENFLEX® Expansion jointtypes

Uni

vers

alco

mpe

n-sa

tors

Late

ral

com

pen-

sato

rs

Ang

ular

com

pen-

sato

rs

Table showing the prime applications, possible uses and industries

Wal

l sea

ling

expa

nsio

n jo

ints

Metal pipes

Plastic pipes

Cooling water pipes

Drinking water pipes

Lubrication oil pipes

Air ducts, gas ducts

Motors

Pumps

Compressors

Fittings

Condensers

Biogas plants

Solar technology

Po

ssib

le u

ses

Mechanical engineering

Domestic industry

Heating installation

Chemical industry

Plant construction

Power industry

Shipbuilding

Ventilation and air-con technology

Hydraulic systems

Refuse incineration plant

Dust removal and filtration technology

Conveyor systems

Water supply/treatment

Renewable energy technology

Ind

ustr

ies

Rubber Expansion jointsProgram summary

111

Type DN

A-1AR-1AS-1B-1R-1RS-1

DN 20-1000DN 20- 400DN 25- 400DN 32- 400DN 25- 300DN 25- 300

PN 16PN 25PN 16PN 16PN 16PN 16

+90 °C+110 °C+110 °C+90 °C+90 °C+90 °C

EPDM, NBR, CIIREPDM, NBREPDM, NBREPDM, NBREPDM, NBR, CIIREPDM, NBR

1.131.151.171.211.33

C-1 DN 300-2400DN 300-2800DN 300-3600

+90 °C+90 °C+90 °C

EPDM, NBR, CIIREPDM, NBR, CIIREPDM, NBR, CIIR

C-2 DN 300-2000DN 300-2000

+90 °C+90 °C

EPDM, NBR, CIIREPDM, NBR, CIIR

AG-5AS-5

DN 20-50DN 32-40

PN 16PN 16

+100 °C+110 °C

EPDM, NBR, CIIREPDM, NBR

Universal rubber expansion joints

D-11D-30

DN 300-7500DN 300-7500

PN 0,7 PN 0,7

EPDM, NBREPDM, NBR

D-21D-22D-41D-42

DN 150-7500DN 150-7500DN 150-7500DN 150-7500

PN 0,7 PN 0,7PN 0,7 PN 0,7

+90 °C+90 °C+90 °C+90 °C

EPDM, NBREPDM, NBREPDM, NBREPDM, NBR

GR-SAE

DN 40-125 NBR+110 °CPN 16

1.131.151.171.211.331.35

1.191.201.191.20

1.231.23

1.25

1.27

1.291.29

1.31

PN 16PN 10PN 4

PN 10PN 4

PN 16PN 16

+90 °C+90 °C

Pressureratebar

Max. operatingtemperature

Rubber grades Connectionparts

Page

rotatingflanges

press-on retainingflange

female and/ormale thread

press-on retaining

frame

rotating SAE flange


rotatingpress-on retainingflange ortightening

straps

112

Type DN Pressureratebar

Max. operatingtemperature

Rubber grades Connectionparts

Page


rotatingflange with tierod restraint

press-on retainingflange with tie rod

restraint on segments

rotating flange

rotating flange

rotating flangewith hinge restraint

press-on retaining

flange withhinge restraint

press-on re-taining flange

with hinge restraint on

counter flange

rotating flange with tierod restraint

press-on retaining

flange with tierod restraint

press-on retainingflange with tie rod

restraint oncounter flange

W-1

W-2

DN 80-3400

DN 200- 800

PN 1PN 2,5PN 2,5

+90 °C+90 °C+90 °C

EPDM, NBREPDM, NBREPDM, NBR

A-2AR-2AS-2B-2R-2RS-2

DN 20-1000DN 20- 400DN 25- 400DN 32- 400DN 25- 300DN 25- 300

PN 16PN 25PN 16PN 16PN 16PN 16

+90 °C+110 °C+110 °C+90 °C+90 °C+90 °C

EPDM, NBR, CIIREPDM, NBREPDM, NBREPDM, NBREPDM, NBR, CIIREPDM, NBR

1.371.391.411.431.531.55

A-4AR-4AS-4B-4

DN 20-1000DN 20- 400DN 25- 400DN 32- 400

PN 16PN 25PN 16PN 16

+90 °C+110 °C+110 °C+90 °C

EPDM, NBR, CIIREPDM, NBREPDM, NBREPDM, NBR

1.371.391.411.43

1.45C-31 DN 300-1000DN 300-1000DN 300-2400DN 2500-3600

PN 16PN 10PN 4

+90 °C+90 °C+90 °C

EPDM, NBR, CIIREPDM, NBR, CIIREPDM, NBR, CIIR

1.47C-32 DN 300-3600 on request

+90 °C EPDM, NBR, CIIR

1.48C-35 DN 300-3600 on request


1.49

1.51

1.571.59

E DN 20-250 PN 10 +90 °C EPDM, NBR

G DN 25-100DN 125-250

PN 16PN 10

+90 °C+90 °C

EPDM, NBREPDM, NBR

A-3AS-3

DN 32-1000DN 25- 400

PN 16PN 16

+90 °C+110 °C

EPDM, NBR, CIIREPDM, NBR

1.61C-41 DN 300-3600 on request


1.62C-42 DN 300-3600 on request


Angular rubber expansion joints

Wall sealing expansion joints

Lateral rubber expansion joints

1.63

on request

Rubber grade* Colour code Possible uses

EPDMNBRCIIR

orangeredwhite

Hot water, acids, lyesOilDrinking water

*Check or inquire about the resistance of the rubber grade to temperature and medium

Rubber expansion joint ■ Type A-1 Universal expansion joint DN 20 – DN 1000

■ for reducing thermal and me-chanical tension in pipes andtheir system components, e.g.■ pumps■ compressors■ motors

■ for absorbing vibration andnoise

■ for compensating axial, lateraland angular movement

■ for compensating simultaneousmovement in cooling waterpipes

■ to compensate for installationinaccuracies

■ as installation and dismantlingaid

Applications

A-1/1-C12

STENFLEX® type A-1 used atpumps

ANSI100

°DINEN

Certificates

Rubber bellows PN 16■■ Highly elastic molded bellows in various rubber grades■■ Synthetic fibre reinforcement■■ Wire-reinforced self-sealing rubber rim■■ Electrical impedance 103 to 106 Ohm (DIN IEC 93, VDE 0303-30)

Universal expansion joint, consisting ofa rubber bellows with rotating flanges

Structure type A-1

Version■■ Rotating flanges with stabilizing

collar■■ Flange drilling for through bolts■■ Special turned groove for rubber

rimDimensionsStandard: DN 20 - DN 175 (PN 16)

DN 200 - DN 1000 (PN 10)DN 20 - DN 400 (PN 6)according to EN 1092

Others: DIN EN, ANSI, BS etc.Connection dimensions see technicalannex

Accessories■■ Vacuum supporting ring■■ Internal guide sleeve■■ Flame-proof protective cover■■ Protective hood■■ Protective tube

FlangesMaterialsStandard: 1.0038 (S235JR)Others: 1.4541, 1.4571,

plastic (PP), aluminum, etc.Corrosion protectionStandard: DN 20 - DN 400

electrogalvanizedDN 450 - DN 1000 hot-dip galvanized

Others: special varnish, specialcoating, etc.

DN 450 -DN 1000

DN 20 - DN 400

■■ CE (DGR 97/23/EG)■■ Bureau Veritas■■ Det Norske Veritas■■ Lloyd´s Register of Shipping■■ Drinking water■■ TÜV Süddeutschland (KTA)Others see technical annex

113

Max. operating pressure to be set 30 % lower for shock loads.*Please consider a decrease of pressure due to temperature (see technical annex).

Max. perm. operating pressureMax. perm. temperatureBursting pressureVacuum operation

16 bar*+100 °C≥ 48 barDN 20-50 without vacuum supporting ring,DN 65-1000 with vacuum supporting ring

Technical design

Dimensions standard program

*Larger Δ D ang possible for compressed installation length.Please inquire for simultaneous (different) movement.**Effective bellows cross sectional area is a theoretical value.

Versions

Type A-1Universal expansion joint, without restraint

Please comply with the general tech-nical instructions regarding reactionforce, moving force, fixed point load,installation instructions etc.Subject to technical alterations anddeviations resulting from the manu-facturing process.

Note

ANSI100

°DINEN

A-1/2-C12

Movement compensation/bellows cross sectional area

114

*DN 25 to DN 300 also available in BL 130 mm as type RFrom DN 200 pressure rate 16 bar also available with flanges PN 16

DN 20 - DN 400

DN 450 - DN 1000

DN BL*

mm

Pres-surerate bar

ø di Bellowsinner ø

mm

ø CRaised faceouter ø

mm

ø ERaised faceinner ø

mm

ø WConvolution øunpressurized

mm

PNFlange

connectionEN 1092

ø DFlangeouter ø

mm

bFlange

thicknessmm

20 100 16 22±3 51 30 55 16 115 1625 100 16 22±3 51 30 55 16 115 1632 125 16 31±3 72 39 78 16 140 1640 125 16 39±3 81 45 86 16 150 1650 125 16 49±3 95 56 97 16 165 1665 125 16 65±3 115 72 113 16 185 1880 150 16 77±3 127 84 135 16 200 20

100 150 16 100±3 151 109 160 16 220 20125 150 16 127±3 178 133 184 16 250 22150 150 16 153±3 206 161 212 16 285 22175 150 16 176±3 230 185 236 16 315 22200 175 10 202±3 260 209 265 10 340 25250 175 10 252±3 313 262 318 10 395 25300 200 10 303±3 363 312 373 10 445 25350 200 10 344±3 423 360 420 10 505 30400 200 10 396±3 474 410 460 10 565 30450 250 10 435±8 532 450 575 10 615 35500 250 10 485±8 584 500 625 10 670 35600 250 10 585±8 684 600 725 10 780 40700 275 10 690±10 800 700 850 10 895 40800 275 10 790±10 900 800 950 10 1015 40900 300 10 890±10 1008 900 1050 10 1115 40

1000 300 10 990±10 1108 1000 1150 10 1230 40

Weight

approx.kg

20253240506580

100125150175200250300350400450500600700800900

1000

2020353535354040404040454545454550505050505050

0016

1223426892

173247264503550990

11001706201330064250544070008544

2.32.33.33.74.45.27.28.0

10.713.015.618.624.230.240.148.864.072.090.0

120.0155.0170.0205.0

1010101010101010101010151515151530303030303030

1010151515151515151515151515151530303030303030

252525252525201515121087655876554

3,5

DN A**Effective bellowscross sectionalarea at 16 bar

cm2

––0.60.60.60.60.650.650.70.750.80.90.90.90.950.950.350.350.350.50.50.60.6

Permissiblevacuum withoutsupporting ring

for lengthbar absolute

Δ ang*Angular

movement± �

degrees*

Δ latLateral

movement

± mmElongation

+ mmCompression

- mm

Δ axAxial

movement

Rubber expansion joint ■ Type AR-1 Universal expansion joint DN 20 – DN 400

■ for reducing thermal and mechanical tension in pipes andtheir system components, e.g. ■ pumps■ compressors

■ for muffling vibration and noise■ at appliances■ in cooling water and lube oil

pipes ■ for compensating axial, lateral

and angular movement■ for compensating simultan-

eous movement in cooling water pipes


■ in sprinkler systems

Applications

AR-1/1-C12

STENFLEX® type AR-1 used atpumps

ANSI130°°

DINEN 25

Flanges

Rubber bellows PN 25■■ Highly elastic molded bellows in various rubber grades■■ High-tensile synthetic fibre reinforcement■■ Wire-reinforced self-sealing rubber rim■■ Electrical impedance 103 to 106 Ohm (DIN IEC 93, VDE 0303-30)

Universal expansion joint, consistingof a rubber bellows and rotatingflanges

Structure type AR-1

115


EPDMNBR

orange/yellowred/yellow

Hot water, acids, lyesOil

*Check or inquire about the resistance of the rubber grade to temperature and medium.



collar■■ Flange drilling for through bolts■■ Special turned groove for rubber rimDimensionsStandard: DN 20 - DN 400 (PN 25)

according to EN 1092Others: DIN EN, ANSI, BS etc.Connection dimensions see technicalannex

MaterialsStandard: 1.0038 (S235JR)Others: 1.4541, 1.4571 etc.Corrosion protectionStandard: electrogalvanizedOthers: hot-dip galvanized, special

varnish, specail coating,etc.

Certificates■■ CE (DGR 97/23/EC)




Technical design

AR-1/2-C12

ANSI130

°

DINEN 25

Version116


Note

* Larger Δ ang possible for compressed installation length.Please inquire for simultaneous (different) movement.**Effective bellows cross sectional area is a theoretical value.



Type AR-1Universal expansion joint, without restraint

DN BL

mm

Pres-surerate bar


mm


mm


mm


mm

PN*Flange

connectionEN 1092

ø DFlangeouter ø

mm

bFlange

thicknessmm

*also available with flanges PN 16 and PN 10.

20253240506580

100125150200250300350400

100100125125125125150150150150175175200200200

252525252525252525252525252525

22±322±331±339±349±365±377±3

100±3127±3153±3202±3252±3303±3344±3396±3

5151728195

115127151178206260313363423474

30303945567284

109133161209262312360410

5555788697

113135160184212265318373420460

252525252525252525252525252525

115115140150165185200235270300360425485555620

161616161618202022222525253030

20 20 10 10 25 025 20 10 10 25 032 35 10 15 25 040 35 10 15 25 150 35 10 15 25 165 35 10 15 25 180 40 10 15 20 2

100 40 10 15 15 5125 40 10 15 15 8 150 40 10 15 12 41200 45 15 15 8 54250 45 15 15 7 72300 45 15 15 6 226350 45 15 15 5 460 400 45 15 15 5 880

2.32.33.33.74.44.96.59.5

13.015.321.831.641.656.769.0

––00.50.40.50.60.60.50.40.60.60.60.650.8

Weight

approx.kg


cm2



Δ ang*Angular

movement± �

degrees*

Δ latLateral

movement

± mmElongation

+ mmCompression

- mm

Δ axAxial

movement

Rubber expansion joint ■ Type AS-1 Universal expansion joint DN 25 – DN 400

■ for reducing thermal and mechanical tension in pipes andtheir system components, e.g. ■ pumps■ compressors■ motors

■ for muffling vibration and noise ■ at appliances■ in cooling water and lub oil

pipes ■ for compensating axial, lateral

and angular movement■ to compensate for installation

inaccuracies■ to meet fire protection regula-

tions■ shipbuilding industry■ in heating plants

Applications

AS-1/1-C12

STENFLEX® type AS-1 used in cool-ing water system of ship’s engine

DINENANSI

130°

Flanges

Rubber bellows PN 16■■ Highly elastic molded bellows in various rubber grades■■ Steel wire cord reinforcement■■ Wire-reinforced self-sealing rubber rim■■ Electrical impedance < 100 Ohm (DIN IEC 93, VDE 0303-30)

Universal expansion joint, consistingof a rubber bellows and rotatingflanges

Structure type AS-1

117


EPDMNBR

orange/bluered/blue




collar■■ Flange drilling for through bolts,

DN 25 with Drill holes■■ Special turned groove for rubber rimDimensionsStandard: DN 25 - DN 175 (PN 16)

DN 200 - DN 400 (PN 10)DN 20 - DN 400 (PN 6) according to EN 1092



varnish, special coating,etc.

Certificates

Accessories■■ Vacuum supporting ring■■ Internal guide sleeve■■ Protective hood■■ Protective tube

■■ CE (DGR 97/23/EC)■■ American Bureau of Shipping■■ Bureau Veritas■■ Det Norske Veritas■■ Germanischer Lloyd■■ Lloyd´s Register of Shipping■■ TÜV/DIN 4809 (DN 25-200)Others see technical annex

flame-proof




Technical design

Versions

Type AS-1Universal expansion joint without restraint

AS-1/2-C12

130°°

DINENANSI

130°

118

materials of the rubber expansionjoint. According to VDI Directive2035, DIN 4809 part 1 and VGB R455P, the manufacturer of the chemi-cals must state that the materialsused in the expansion joint, especial-ly for the rubber bellows, will not bedamaged by the chemicals.

NotePlease comply with the general tech-nical instructions regarding reactionforce, moving force, fixed point load,installation instructions etc.Subject to technical alterations anddeviations resulting from the manu-facturing process.Chemicals used for water treatment(particularly in heating systems andcoolant systems) can corrode the


* Larger Δ ang possible for compressed installation length.Please inquire for simultaneous (different) movement. **Effective bellows cross sectional area is a theoretical value.


DN BL*

mm

Pres-surerate bar


mm


mm


mm


mm

PNFlange

connectionEN 1092

ø DFlangeouter ø

mm

bFlange

thicknessmm

From DN 200 pressure rate 16 bar also available with flanges PN 16.*DN 25 up to DN 300 also available as type RS-1 in length 130.** Flanges with drill holes M 12

253240506580

100125150175200250300350400

125125125125125150150150150150175175200200200

161616161616161616161010101010

31±331±339±349±365±377±3

100±3127±3153±3176±3202±3252±3303±3344±3396±3

72728195

115127151178206230260313363423474

393945567284

109133161185209262312360410

78788697

113135160184212236265318373420460

16**1616161616161616161010101010

115140150165185200220250285315340395445505565

161616161820202222222525253030

25 30 10 15 25 0 –32 30 10 15 25 0 040 30 10 15 25 0 050 30 10 15 25 0 065 30 10 15 25 0 080 40 10 15 20 12 0.2

100 40 10 15 15 9 0.4125 40 10 15 15 18 0.65150 40 10 15 12 52 0.65175 40 10 15 10 54 0.7200 45 15 15 8 6 0.7250 45 15 15 7 191 0.7300 45 15 15 6 255 0.75350 45 15 15 5 563 0.5400 45 15 15 5 875 0.3

2.23.33.74.45.27.28.0

10.713.015.919.124.830.942.051.0

Weight

approx.kg


cm2



Δ ang*Angular

movement± �

degrees*

Δ latLateral

movement

± mmElongation

+ mmCompression

- mm

Δ axAxial

movement

Δ axAxial movement

Rubber expansion joint ■ Type AG-5Universal expansion joint DN 20 – DN 50

■ for reducing thermal and mechanical tension

■ for muffling vibration andnoise



■ domestic industry■ for heating plants and hot

water pipes■ in oil hydraulic systems

Applications

AG-5/C12

100°°

20 30 10 10 2525 30 10 10 2532 35 10 15 2540 35 10 15 2550 35 10 15 22

DN Δ angAngular

movement

± � Grad

Δ latLateral

movement

± mmElongation

+ mmCompression

- mm

Please inquire for simultaneous (different) movement

Movement compensation

ISO

DN Pres-sure rate bar


mm

SW1Widthacrossmm

SW2Widthacrossmm

ø D2Femalethread ø

inch

ø D1Male

threadø inch

L1

mm

L2

mm

ø diBellowsinner ø

mm

Weight

ap-prox.

kg


2025324050

1616161616

2026334052

6067808799

3036465565

3646556580

0.50.60.81.11.3

R 3/4

R 1R 11/4

R 11/2

R 2

G 1G 11/4

G 11/2

G 2G 21/2

172172172172172

Versions

Type AG-5 with male thread

Type AG-5 with female threadunion nut with flat gasket

Rubber bellows PN 16■■ Highly elastic molded bellows in various rubber grades■■ Synthetic fibre reinforcement■■ Electrical impedance 103 to 106 Ohm (DIN IEC 93, VDE 0303-30)

■■ Universal expansion joint consist-ing of a rubber bellows withthreaded ends

Structure type AG-5

119


EPDMNBRCIIR

orangeredwhite



Version ■■ Male thread acc. ISO 7-1 (DIN

2999). ■■ Union nut with female thread acc.

ISO 228-1; flat sealing, suitable fordrinking water

MaterialsStandard: 1.4571

Threaded ends■■ CE (DGR 97/23/EC)■■ Drinking water

Certificates

■■ Male or female thread■■ Combination of female/male

thread


Note

200200200200200


Max. perm. operating pressureMax. perm. temperatureBursting pressure

16 bar*+100 °C≥ 48 bar

Technical design

Threaded ends


EPDMNBR

orange/bluered/blue



Rubber expansion joint ■ Type AS-5Universal expansion joint DN 32 – DN 40

■ for reducing thermal and mechanical tension




■ for heating plants and hot water pipes

Applications

AS-5/C12

130°°


ISO


32 30 10 15 2540 30 10 15 25

DN Δ angAngular

movement

±�degrees

Δ latLateral

movement

± mmElongation

+ mmCompression

- mm

Please inquire for simultaneous (different) move-ment

Δ axAxial movement

Versions

Type AS-5 with male thread

120

Rubber bellows PN 16■■ Highly elastic molded bellows in various rubber grades■■ Steel wire cord reinforcement■■ Electrical impedance 103 to 106 Ohm (DIN IEC 93, VDE 0303-30)

■■ Universal expansion joint consist-ing of a rubber bellows with thread-ed ends

Structure type AS-5

Weight

ap-prox.

kg

2.42.6

Version■■ Male thread acc. ISO 7-1 (DIN

2999). ■■ Union nut with female thread acc.

ISO 228-1; flat sealing.MaterialsStandard: 1.0038 (S235 JR)

(Malleable iron), electrogalvanized

Certificates■■ CE (DGR 97/23/EC)■■ TÜV/DIN 4809

■■ Male or female thread■■ Combination of female/male

thread


Note

DN ø diBellowsinner ø

mm

ø WConvolutionøunpressurized

mm

SW1Widthacross

mm

SW2Widthacross

mm

ø D1Male

thread øInch

L1

mm

L2

mm

ø AUnion nut

ømm

3240

7575

7070

4754

SW3Widthacross

mm

9090

237239

187189

104104

R 11/4”R 11/2”

ø D2Femalethread ø

Inch

G 11/4”G 11/2”

34±334±3

Pres-surerate bar

1616



16 bar*+130 °C≥ 50 barwithout vacuum supporting ring

Technical design

L2

L1

A/SW

3A/

SW3

Type AS-5 with female thread

Rubber expansion joint ■ Type B-1 Highly flexible universal expansion joint DN 32 – DN 400

■ for compensating large axialand lateral movements

■ for reducing thermal and mechanical tension in pipes andtheir system components, e.g.■ pumps■ compressors

■ for muffling vibration and noise at appliances

■ for compensating simultan-eous movement in cooling water pipes


■ power station technology■ chemical industry

Applications

B-1/1/C12

ANSI100

°DINEN

STENFLEX® type B-1 for compensat-ing large movements

DN 32 –DN 150 DN 175 –

DN 400

Rubber bellows PN 16■■ Very elastic molded bellows with specially deep convolution in various rubber

grades■■ Synthetic fibre reinforcement■■ Wire-reinforced self-sealing rubber rim■■ Electrical impedance 103 to 106 Ohm (DIN IEC 93, VDE 0303-30)

Universal expansion joint consistingof a rubber bellows and rotatingflanges

Structure type B-1

121


EPDMNBR**

orangered


*Check or inquire about the resistance of the rubber grade to temperature and medium.**Only available in large lots.

Version■■ DN 32 – DN 150 rotating flanges

with stabilizing collar and drilling forthrough bolts

■■ DN 175 – DN 400 rotating flangesdrilled with threaded holes

■■ Special turned groove for rubber rimDimensionsStandard: DN 32 - DN 175 (PN 16)

DN 200 - DN 400 (PN 10)according to EN 1092


FlangesMaterialsStandard: 1.0038 (S235JR)Others: 1.4541, 1.4571 etc.Corrosion protectionStandard: DN 32 – DN 400

electrogalvanizedOthers: hot-dip galvanized, special


Certificates


■■ CE (DGR 97/23/EC)




Technical design

Versions

ANSI100

°DINEN

B-1/2/C12

122

Weight

approx. kg

DN Δ latLateral

movement

± mm

A*Effective bellowscross sectionalarea at 16 bar

cm2

Elongation+ mm

Compression- mm


Δ axAxial movement

Please inquire for simultaneous (different) movement. *Effective bellows cross sectional area is a theoretical value.


From DN 200 pressure rate 16 bar also available with flanges PN 16.


Note

Type B-1 Universal expansion joint without restraint, flanges drilled with threaded holes

DN BL

mm

Pres-surerate bar


mm


mm


mm


mm

PNFlange

connectionEN 1092

ø DFlangeouter ø

mm

bFlange

thicknessmm

DN 175 - DN 400

DN 32 - DN 150Type B-1 Universal expansion joint without restraint, flanges with drilling forthrough bolts

3240506580

100125150175200250300350400

125125125125150150150150100125125150150150

1616161616161616161010101010

30±330±340±361±374±392±3

116±3139±3177±3201±3251±3302±3347±3392±3

77

86105118137166191217264314370424474

42 42 617182

101130150183207260313354407

100100115144167197230266282320374443485535

1616161616161616161010101010

150150165185200220250285315340395445505565

1616161618181818182022242424

32 25 15 15 2140 25 15 15 2150 30 15 15 3065 35 20 15 5580 45 20 20 90

100 45 25 20 150125 45 35 25 220150 45 35 25 330175 25 40 25 432200 35 40 35 553250 35 40 35 730300 45 50 35 975350 45 50 35 1242400 45 50 35 1600

4.04.44.34,95.77.29.5

10.413.615.620.625.331.638.3

■■ Elastic robust bellows in various rubber grades■■ Synthetic fibre reinforcement■■ Full-faced self-sealing rubber flanges with drilling for through bolts■■ Electrical impedance 103 to 106 Ohm (DIN IEC 93, VDE 0303-30)

Rubber expansion joint ■ Type C-1 Universal expansion joint DN 300 – DN 3600

■ for reducing thermal and mechanical tension in pipes andtheir system components, e.g. ■ pumps■ condensers




■ to compensate for ground andfoundation settlement


■ power station technology■ process plant engineering

Applications

C-1/1-C12

ANSI DINEN

STENFLEX® type C-1 with specialhigh restraints in cooling water sys-tem of a power plant

100°

Rubber bellows PN 4 / PN 10 / PN 16

Rubber grade* Colour code

Possible uses

EPDMNBRCIIR

orangeredwhite

Ccooling, sea, brackish water, acids, lyesOilDrinking water


123

Flanges

Structure type C-1■■ Universal expansion joint consist-

ing of a rubber bellows and press-on retaining flanges

Version■■ Press-on retaining flanges with

stabilizing collar■■ Flange drilling for through boltsDimensionsStandard: see table PN 6/PN 10


MaterialsStandard: 1.0038 (S235JR)Others: 1.0577 (S355J2), 1.4541,

1.4571 etc.Corrosion protectionStandard: DN 300 - DN 700

electrogalvanizedDN 800 - DN 1000hot-dip galvanizedDN 1100 - DN 3600anti-corrosion primed

Others: special varnish, special coating, etc.

Note

Certificates

Accessories■■ Vacuum supporting ring■■ Internal guide sleeve■■ Protective tube

■■ CE (DGR 97/23/EC)■■ Drinking water■■ TÜV (KTA)

■■ Available in various bellow’s geometries and special lengths


4 bar* 10 bar* 16 bar*+100 °C +100 °C +100 °C≥ 15 bar ≥ 30 bar ≥ 48 bar

with vacuum supporting ring (at permanent vacuum)

DNPressure rateMax. perm. operating pressureMax. perm. temperatureBursting pressureVacuum operation

Technical designDN 300 - 3600

PN 4DN 300 - 2800

PN 10DN 300 - 2400

PN 16


DN

Compression-mm

Elongation+mm

Movement compensation/bellows cross sectional area Versions

C-1/2-C12

without vaccum supporting ring

DN Pressurerate

bar

ø diBellows inner ø

tolerance±1%mm

hRubber

flange thick-nessmm

ø DFlange outer ø

PN 6 (EN 1092)mm

ø DFlange outer ø

PN 10 (EN 1092)mm

bFlange thick-

ness

mm

BL

mm

ø WConvolution

øunpressurized

mm

Weight

approx. kg

BL

mm

ø WConvolution

øunpressurized

mm

Weight

approx. kg

Other lengths (BL) and pressure rates on request.

Dimensions standard programwithout vacuum supporting ringSteel flangeBellows with vacuum supporting ring

Δ axAxial movement

Δ latLateral

movement

±mm

Δ angAngular

movement

±� degrees*

A*Effective

bellows crosssectional area

cm2

A*Effective


cm2Compression

-mmElongation

+mm

with vacuum supporting ringΔ ax

Axial movementΔ lat

Lateralmovement

±mm

Δ angAngular

movement

±� degrees*

Please inquire for simultaneous (different) movement.*Effective bellows cross sectional area is a theoretical value.

Type C-1Universal expansion joint without restraints

ANSI DINEN100

°°

124

300350400450500600700750800900

100011001200130014001500160017001800200021002200230024002500260028003000320034003600

40404040404040404040404040404040404040404040404040404040404040

30303030303030303030303030303030303030303030303030303030303030

30303030303030303030303030303030303030303030303030303030303030

11.39.78.57.76.95.74.94.64.33.83.43.22.92.72.52.32.22.01.91.71.61.61.51.41.41.31.21.11.01.01.0

10201300162019702360324042504820541067008140

1050012300142001630018500208002330025900315003450037700410004450048000518005960068000770008650096600

10201300162019702360324042504820541067008140

1120013000150001710019300217002430026900327003580039000423004580049500533006120069700788008850098600

40404040404040404040406060606060606060606060606060606060606060

30303030303030303030303535353535353535353535353535353535353535

30303030303030303030303535353535353535353535353535353535353535

11.39.78.57.76.95.74.94.64.33.83.43.63.33.02.82.62.52.32.22.01.91.81.71.61.61.51.41.31.21.11.1

300350400450500600700750800900

100011001200130014001500160017001800200021002200230024002500260028003000320034003600

300350400450500600700750800900

100011001200130014001500160017001800200021002200230024002500260028003000320034003600

440490540595645755860925975

1075117512901405152016301730183019402045226523752475259026852795290531153315352537353975

445505565615670780895965

10151115123013451455156516751795191520152115232524402550265027602860296031803405

–––

413463513563613713813863923

1023112312681368146815681668176818681968216822682378247825782678277829783178337835783778

34384354598093

103118131160185215230260295340365370430475525550600620640690720740770820

250250250250250250250250250250250325325325325325325325325325325325325325325325325325325325325

40455560658095115130145165210240255290325380400410460515575600650670690730770790820870

4134635135636137138138639231023112313101410151016101710181019102010221023102420252026202720282030203220342036203820

15151515151515152020202020202020202020202025252525252525252525

20202020202020202020202020202020202020202020202020202020202020

250250250250250250250250250250250300300300300300300300300300300300300300300300300300300300300

4/10/164/10/164/10/164/10/164/10/164/10/164/10/164/10/164/10/164/10/164/10/164/10/164/10/164/10/164/10/164/10/164/10/164/10/164/10/164/10/164/10/164/10/164/10/164/10/16

4/104/104/10

4444

Rubber expansion joint ■ Type C-2 Highly flexible twin-convoluted universal expansion joint DN 300 – DN 3600

■ for compensating large axial,lateral and angular movement

■ for reducing thermal and mechanical tension in pipes andtheir system components, e.g.■ pumps■ fittings■ condensers





Applications

C-2/1-C12

DINENANSI

STENFLEX® type C-2 with specialhigh restraints

Rubber bellows PN 4 / PN 10

■■ Twin-convoluted very elastic robust bellows in various rubber grades■■ Synthetic fibre reinforcement■■ Full-faced self-sealing rubber flanges with drilling for through bolts■■ Electrical impedance 103 to 106 Ohm (DIN IEC 93, VDE 0303-30)

Structure type C-2

125

Rubber grade* Colourcode

Possible uses

EPDMNBRCIIR

orangeredwhite

Cooling, sea, brackish water, acids, lyesOilDrinking water


FlangesVersion■■ Press-on retaining flanges with

stabilizing collar■■ Flange drilling for through boltsDimensionsStandard: see table PN 6/PN 10


MaterialsStandard: 1.0038 (S235JR)Others: 1.0577 (S355J2),

1.4541, 1.4571 etc.Corrosion protectionStandard: DN 300 - DN 700



■■ Universal expansion joint consist-ing of a rubber bellows and press-on retaining flanges

Note

Certificates



100°

■■ Outer stabilizing ring between theconvolutions

■■ Available in special lengths

For vertical installation please consultus for technical advice.Please comply with the general tech-nical instructions regarding reactionforce, moving force, fixed point load,installation instructions etc.Subject to technical alterations anddeviations resulting from the manu-facturing process.

4 bar* 6 bar* 10 bar*+100 °C +100 °C +100 °C≥ 12 bar ≥ 20 bar ≥ 30 barVacuum supporting rings on request (only for horizontal installation)



PN 4DN 300 - 2600

PN 6DN 300 - 2000

PN 10


Version

C-2/2-C12

DINENANSI

Type C-2Highly flexible universal expansionjoint without restraint

126

100°°

DN

Compression-mm

Elongation+mm

Movement compensation/bellows cross sectional areawithout vaccum supporting ring

300350400450500600700750800900

100011001200130014001500160017001800200021002200230024002500260028003000320034003600

DN Pressurerate

bar


tolerance±1%mm

hRubber

flange thick-nessmm

ø DFlange outer ø

PN 6 (EN 1092)mm

ø DFlange outer ø

PN 10 (EN 1092)mm

bFlange thick-

ness

mm

BL

mm

ø WConvolution

øunpressurized

mm

Weight

approx. kg

BL

mm

ø WConvolution

øunpressurized

mm

Weight

approx. kg

Other lengths (BL) and pressure rates on request.

Dimensions standard programwithout vacuum supporting ringSteel flangeBellows with vacuum supporting ring

Δ axAxial movement

Δ latLateral

movement

±mm

Δ angAngular

movement

±� degrees*

A*Effective


cm2

A*Effective


cm2Compression

-mmElongation

+mm

with vacuum supporting ringΔ ax

Axial movementΔ lat

Lateralmovement

±mm

Δ angAngular

movement

±� degrees*


on

req

uest

on

req

uest

on

req

uest

80808080808080808080808080808080808080808080808080808080808080

60606060606060606060606060606060606060606060606060606060606060

60606060606060606060606060606060606060606060606060606060606060

21.818.916.715.013.511.39.89.18.67.66.96.55.95.55.14.94.54.13.93.73.33.23.13.02.92.72.52.42.32.22.1

10201300162019702360324042504820541067008140

1050012300142001630018500208002330025900315003450037700410004450048000518005960068000770008650096600

10201300162019702360324042504820541067008140

1120013000150001710019300217002430026900327003580039000423004580049500533006120069700788008850098600

21.818.916.715.013.511.39.89.18.67.66.97.36.76.25.75.45.04.74.54.03.83.73.53.43.23.12.92.72.52.42.3

8080808080808080808080

120120120120120120120120120120120120120120120120120120120120

60606060606060606060607070707070707070707070707070707070707070

60606060606060606060607070707070707070707070707070707070707070

300350400450500600700750800900

100011001200130014001500160017001800200021002200230024002500260028003000320034003600

300350400450500600700750800900

100011001200130014001500160017001800200021002200230024002500260028003000320034003600

440490540595645755860925975

1075117512901405152016301730183019402045226523752475259026852795290531153315352537353975

445505565615670780895965

10151115123013451455156516751795191520152115232524402550265027602860296031803405

–––

413463513563613713813863923

1023112312681368146815681668176818681968216822682378247825782678277829783178337835783778

354555606580

100115130150170220240280320360400415430460

400400400400400400400400400400400525525525525525525525525525525525525525525525525525525525525

405060657085105120135155175280310350400450490520540620

4134635135636137138138639231023112313101410151016101710181019102010221023102420252026202720282030203220342036203820

15151515151515152020202020202020202020202025252525252525252525

20202020202020202020202020202020202020202020202020202020202020

400400400400400400400400400400400550550550550550550550550550550550550550550550550550550550550

4/104/104/104/104/104/104/104/104/104/104/104/104/104/104/104/104/104/104/104/10

Rubber expansion joint ■ Type D-11, D-30

■ for reducing thermal and mechanical tension, e.g. at■ ventilating fans ■ blowers

■ for muffling vibration and noise■ for compensating axial and

lateral movement■ to compensate for installation

inaccuracies■ air and ventilation technology■ dedusting and filter engineer-

ing (clean-room technology)

Rubber bellows PN 0,7 bar g

Applications

■■ Extruded endless vulcanized profile band■■ Without reinforcement■■ Self-sealing rubber rim

D-11/D-30/1-C12


FlangesVersion■■ Rotating flanges ■■ Flange drilling for through boltsDimensions Standard: according to DIN 86044Connection dimensions see technicalannex

EPDMNBR

orangered

Air, gases containing acids or lyes, dustGases containing oil


Max. operating pressure to be set 30 % lower for shock loads.

Max. perm. operatingpressureVacuum operation

depending on DN not exceeding 0.7 bar g up to +90 °C(see table)for light vacuum down to 0.98 bar abs.

■■ Internal guide sleeve

Accessories

Note

Customized

production

127

Type D-11

■■ Round universal expansion jointconsisting of a rubber bellows androtating flanges

■■ Wide rubber rim

Structure type D-11■■ Round universal expansion joint

consisting of a rubber bellows andstainless steel tightening straps

■■ Narrow rubber rim

Structure type D-30

Round universal expansion joint DN 300 – DN 7500

MaterialsStandard: 1.0038 (S235JR)Corrosion protectionStandard: anti-corrosion primedOthers: hot-dip galvanized, special

varnish, special coating,etc.supply only for large ordervolumens

Please comply with the general tech-nical instructions and installation in-structions.Subject to technical alterations anddeviations resulting from the manu-facturing process.Admissible operating pressure, effec-tive cross sectional area, reactionforces, moving forces and springrates depend on expansion joint’ssize. Please inquire.

STENFLEX® type D-30 with tighten-ing straps in an air duct

Property Pressure Temperature

90°°

DINEN

D-11/D-30/2-C12

Type D-11 with flanges Type D-30 with tightening straps


128



Versions

90°°

DINEN

DN BL

mm

Other sizes up to DN 7500 on request.

Pressurerate at 20 °C

bar


mm

ø WConvolu-

tion øunpressur-

izedmm

Type D-11

mm

Type D-30

mm

Type D-11

mm

Type D-30

mm

DIN 86044*

mm

EN 1092, PN 6

mm

bFlangethick-ness

mm

ø CRaised face ø

hRubber rim thickness ø D Flange outer ø

DN

Please inquire for simultaneous (different) movement. *Effective bellows cross sectional area is a theoretical value.

Compression-mm

Elongation+mm

Δ axAxial movement

Compression-mm

Elongation+mm

Δ latLateral

movement

+/- mm

C latSpring rate

lateral

N/mm

C axSpring rate

axial

A*Effective bellows

cross sectional area

cm2

300350400450500550600700800900

10001100120013001400150016001700180019002000

440490540595645705754856958

106011621266136614661566166617661866196620662166

440490540595645

755860975

10751175

1405

1630

1830

2045

2265

101010101010101010101010101010101010101010

300350400450500550600700800900

10001100120013001400150016001700180019002000

75010121300165520002400290039005100640079009600

115001340015500178002030022800257002860031700

252525252525252525252525252525252525252525

121415172022232730353943475054586266707478

45526067758390

105120135150165180195210225240255270285300

202020202020202020202020202020202020202020

1518202225283035404551576370778593

102112123135

151515151515151515151515151515151515151515

150150150150150150150150150150150150150150150150150150150150150

0.700.600.500.450.400.370.330.280.250.220.200.180.170.150.140.130.120.110.100.100.10

300350400450500550600700800900

10001100120013001400150016001700180019002000

354404454504554604654754854954

10541154125413541454155416541754185419542054

370420470520570620670770870970

10701170127013701470157016701770187019702070

340390440490540590640740840940

10401140124013401440154016401740184019402040

151515151515151515151515151515151515151515

121212121212121212121212121212121212121212

8

�

�

8

�

�

Rubber expansion joint ■ Type D-21, D-22, D-41, D-42

■ for reducing thermal and mechanical tension, e.g. at■ ventilating fans ■ blowers

■ for muffling vibration and noise■ for compensating axial and

lateral movement■ to compensate for installation

inaccuracies■ air and ventilation technology■ dedusting and filter engineer-

ing (clean-room technology)

Rubber bellows PN 0,7 bar g

Applications

■■ Extruded, endless vulcanized profile band■■ Without reinforcement■■ Self-sealing rubber rim

D-21/D-22/D-41/42/1-C12


Press-on retaining frameMaterialsStandard: 1.0038 (S235JR)Others: unalloyed steel, stainless

steel, etc. Corrosion protectionStandard: anti-corrosion primedOthers: hot-dip galvanized, special

varnish, special coating, etc.

EPDMNBR

orangered

Air, gases containing acids or lyes, dustGases containing oil


■■ Internal guide sleeve

Accessories

Customized

production

129

Type D-21

■■ Rectangular universal expansionjoint consisting of a rubber bellowsand press-on retaining frame


Structure type D-21

■■ Rectangular universal expansionjoint consisting of a rubber bellowsand press-on retaining frame

■■ Frame with stiffening ring■■ Narrow rubber rim

Structure type D-22

■■ Rectangular universal expansionjoint consisting of a rubber bellowsand press-on retaining frame(round corners)


Structure type D-41

Square or oval universal expansion joint DN 150 – DN 7500

Version ■■ Retaining frame with drilling for

through boltsDimensions ■■ Dimensions and drillings according

to customer’s specificationConnection dimensions see technicalannex

■■ Rectangular universal expansionjoint consisting of a rubber bellowsand press-on retaining frame(round corners)

■■ Frame with stiffening ring■■ Narrow rubber rim

Structure type D-42

Type D-41

STENFLEX® type D-21 in an air-conditioning duct

Max. operating pressure to be set 30 % lower for shock loads.

Max. perm. operatingpressureVacuum operation

depending on DN not exceeding 0.7 bar g up to +90 °C(see table)for light vacuum down to 0.98 bar abs.

Property Pressure Temperature

90°°

D-21/D-22/D-41/42/2-C12

Please comply with the general tech-nical instructions and installation in-structions.Subject to technical alterations anddeviations resulting from the manu-facturing process.

Note

130

Dimensions standard program Movement compensation

Admissible operating pressure, effec-tive cross sectional area, reactionforces, moving forces and springrates depend on expansion joint’ssize. Please inquire.

Versions

90°°

Type D-21 Type D-41

Type D-22 Type D-42

D 21D 22D 41D 42

150150150150

900900900900

27272727

35203520

12151215

10101010

150150150150

7500750075007500

D 21D 22D 41D 42

20202020

15151515

25252525

Type DN 1Maximum

size

mm

DN 2Minimum

size

mm

BL

mm

Minimumcircumfer-ential size

inside

mm

aExternalheight ofconvolu-

tion mm

CRubber

rim height

mm

hRubber

rim thickness

mm

bFlange

thickness

mm

Type

Compression- mm

axAxial movement

Elongation+ mm

latLateralmove-ment

+/- mm

Rubber expansion joint ■ Type GR-SAE Universal expansion joint DN 32 – DN 125

Applications

GR-SAE/1-C12

STENFLEX® type GR-SAE in a low-pressure hydraulic system

SAE

Structure type GR-SAE

Rubber bellows PN 16

■■ Elastic molded bellows ■■ High-tensile synthetic fibre reinforcement■■ Wire-reinforced self-sealing rubber rim■■ Electrical impedance 103 to 106 Ohm (DIN IEC 93, VDE 0303-30)

Universal expansion joint consistingof a rubber bellows and rotatingflanges


NBR red/yellow Oil, hydraulic oil

*Inquire about the resistance of the rubber grade depending on the kind of oil and additives.


collar■■ Flange drilling for through bolts ac-

cording to SAE-standard, suitablefor socket head cap screw acc.DIN 6912

■■ Special turned groove for rubberrim

DimensionsStandard: SAE-standard 3000 psiOthers: PN 16

according to EN 1092Connection dimensions see technicalannex

FlangesMaterialsStandard: aluminiumOthers: 1.0038 (S235JR) etc.Corrosion protectionStandard: not necessary for

aluminiumOthers: electrogalvanized, etc.

Certificates


■■ CE (DGR 97/23/EC)

■ for reducing thermal and mechanical tension in pipesand their system components


■ for muffling vibration and oscillation at aggregates

■ for damping noise transmissionat■ pumps■ machines■ fittings

■ in hydraulic plants■ in lub oil lines■ mechanical engineering

130°°

131




Technical design

Weight

approx. kg


DN L1mm

L2mm

D1mm

D2mm

bmm

dmm

Flange dimensions according to SAE-standard

Versions

SAE

GR-SAE/2-C12

Flange according to SAE-standard

DN A*Effective bellowscross sectionalarea at 16 bar

cm2

Δ angAngular

movement± �

degrees

Δ latLateral

movement

± mmElongation

+ mmCompression

- mm



Δ axAxial movement

132

Note

130°°


Type GR-SAEUniversal expansion joint

DN BL

mm

Pressurerate

bar


mm

ø CRaised face

outer ømm


mm

ø ERaised face

inner ømm

100130130130130130130

3240506580

100125

16161616161616

22±328±338±348±366±390±3

118±4

51667689

106135161

3034445774

101130

558191

103118146170

3240506580

100125

20202020202020

10101010101010

10101010101010

252020151288

038466276

109165

0.51.01.21.82.12.63.4

3240506580

100125

58.7707889

106130152

30.235.743.051.062.078.092.0

7994

102116134162190

64758698

120146170

16161616181818

11131313171717

Rubber expansion joint ■ Type R-1Universal expansion joint DN 25 – DN 300

■ for reducing thermal and mechanical tension in pipes andtheir system components, e.g.■ pumps■ compressors■ motors

■ for muffling vibration and noise ■ for compensating axial, lateral

and angular movement■ to compensate for installation

inaccuracies■ as installation and dismantling

aid

Applications

R-1/1-C12




DN 25 with Drill holes■■ Special turned groove for rubber




EPDMNBRCIIR

orangeredwhite


*Check or inquire about the resistance of the rubber grade to temperature and medium. ■■ CE (DGR 97/23/EC)■■ Bureau Veritas■■ Lloyd’s Register of shipping■■ Det Norske Veritas■■ Drinking water

Certificates

Accessories

STENFLEX® type R-1 in a proportion-ing system

133

MaterialsStandard: 1.0038 (S235JR)Others: 1.4541, 1.4571Corrosion protectionStandard: electrogalvanizedOthers: hot-dip galvanized, special


Flanges

DINEN100

°ANSI

■■ Vacuum supporting ring■■ Internal guide sleeve■■ Flame-proof protective cover■■ Protective hood■■ Protective tube

Structure type R-1Universal expansion joint consistingof a rubber bellows and rotatingflanges


■■ Flat-convoluted molded bellows in various rubber grades ■■ Synthetic fibre reinforcement■■ Wire-reinforced self-sealing rubber rim■■ Electrical impedance 103 to 106 Ohm (DIN IEC 93, VDE 0303-30)

length 130 mm




Technical design




R-1/2-C12

DINEN

Version


134

Type R-1Universal expansion joint without restraint

100°°


Note

ANSI

253240506580

100125150200250300

130130130130130130130130130130130130

161616161616161616101010

31±331±339±349±365±377±3

100±3127±3153±3202±3252±3303±3

72728195

115127151178206260313363

393945567284

109133161209262312

888896

107123135160184212260313363

161616161616161616101010

115140150165185200220250285340395445

161616161820202222252525

DN BL

mm

Pressurerate

bar


mm

bFlange

thickness

mm

ø CRaisedface

outer ømm

ø ERaisedface

inner ømm


mm

PNFlange

connec-tion

EN 1092

ø DFlangeouter ø

mm

253240506580

100125150200250300

353535353530303030252520

–0.60.60.60.70.650.60.750.650.70.70.8

889

19335398

103203379525769

101010101010101010101010

151515151515151515151515

252525252520151510765

2.23.33.84.55.27.18.0

10.512.818.223.730.4

Weight

approx.kg


cm2



Δ ang*Angular

movement± �

degrees*

Δ latLateral

movement

± mmElongation

+ mmCompression

- mm

Δ axAxial

movement

135

Rubber-expansion joint ■ Type RS-1Universal-expansion joint DN 25 - DN 300

■ or reducing thermal and mechanical tension in pipes andtheir system components, e.g.■ pumps■ compressors■ motors

■ for muffling vibrations and noise■ at appliances ■ in cooling water and lub oil

pipes

Applications

RS-1/1-C12






Rubber bellows PN 16■■ Flat-convoluted molded bellows in various rubber grades ■■ Steel wire cord reinforcement■■ Wire-reinforced self-sealing rubber rim■■ Electrical impendance < 100 Ohm (DIN IEC 93, VDE 0303-30)

Rubber grade* Color code Possible uses

EPDMNBR

orange/bluered/blue



Universal-expansion joint, consistingof a flat-convoluted rubber bellowsand rotating flanges

Structure Type RS-1



Flanges

DINENANSI

130°



■ to meet fire protection regulations

■ shipbuilding industry■ in heating plants

flame-proof

STENFLEX® Type RS-1 used in coo-ling water system of ship’s engine

■■ CE (DGR 97/23/EG)■■ Bureau Veritas■■ Germanischer Lloyd■■ Lloyd’s Register of Shipping■■ TÜV/DIN 4809 (DN 25-200)■■ Det Norske Veritas■■ MED

Certificates





Technical design

136

DINENANSI

130°




RS-1/2-C12

Version


Type RS-1Universal-expansion joint, without restraint

Please comply with the general tech-nical instructions regarding reactionforce, moving force, fixed point load,installation instructions etc.Subject to technical alterations anddeviations resulting from the manu-facturing process.Chemicals used for water treatment(particularly in heating systems andcoolant systems) can corrode the ma-terials of the rubber expansion joint.

NoteAccording to VDI Directive 2035, themanufacturer of the chemicals muststate that the data indicating that thematerials used in the expansion joint,especially for the rubber bellows, willnot be damaged by the chemicals.

DN BL

mm

Pressurerate

bar


mm

bFlange

thickness

mm

ø CRaisedface

outer ømm

ø ERaisedface

inner ømm


mm

PNFlange

connec-tion

EN 1092

ø DFlangeouter ø

mm

253240506580

100125150200250300

130130130130130130130130130130130130

161616161616161616101010

31±331±339±349±365±377±3

100±3127±3153±3202±3252±3303±3

72728195

115127151178206260313363

393945567284

109133161209262312

888896

107123135160184212260313363

161616161616161616101010

115140150165185200220250285340395445

161616161820202222252525

253240506580

100125150200250300

353535353530303030252520

00023

164881

143191413533

–0

0.20.20.40.40.40.40.40.40.50.6

101010101010101010101010

151515151515151515151515

252525252520151510765

2.23.33.84.55.27.18.0

10.512.819.024.531.3

Weight

approx.kg


cm2



Δ ang*Angular

movement± �

degrees*

Δ latLateral

movement

± mmElongation

+ mmCompression

- mm

Δ axAxial

movement

Rubber expansion joint ■ Type A-2 and A-4 Lateral expansion joint DN 20 – DN 1000



■ for compensating lateralmovement


■ to compensate for ground andfoundation settlement or tanksettlement during filling

Applications

A-2/A-4/1-C12

ANSI100

°DINEN

Type A-2

Type A-4


Lateral expansion joint consisting of arubber bellows with rotating flangesand tie rods (outer restraints) to ab-sorb reaction force from internal pres-sure

Structure type A-2Lateral expansion joint consisting of arubber bellows with rotating flangesand tie rods (outer and inner re-straints) to absorb reaction force frominternal pressure or vacuum

Structure type A-4

FlangesVersion ■■ Flanges with stabilizing collar and

ears to carry the tie rods■■ Flange drilling for through bolts■■ Special turned groove for rubber




Tie rod restraints■■ DN 20 - DN 150 Tie rods carried

on silencing rubber sockets■■ DN 175 - DN 1000 Tie rods carried

on spherical washers and conicalseats

MaterialsStandard: tie rods 8.8Others: stainless steel Corrosion protectionStandard: electrogalvanizedOthers: hot-dip galvanized

137

■■ CE (DGR 97/23/EG)■■ Bureau Veritas■■ Det Norske Veritas■■ Drinking water■■ Lloyd´s Register of Shipping■■ TÜV (KTA)Others see technical annex

Certificates


MaterialsStandard: 1.0038 (S235JR)Others: 1.4541, 1.4571 etc.Corrosion protectionStandard: DN 20 – DN 400

electrogalvanizedDN 450 – DN 1000 hot-dip galvanized



EPDMNBRCIIR

orangeredwhite



Type A-2



16 bar*+100 °C≥ 48 bar≥ 0.05 bar abs. with vacuum supporting ring (from DN 65)

Technical design

*DN 32 to DN 300 also available in BL 130 mm as type R-2.From DN 200 higher pressure rate available on request.


Movement compensation Flange versions

Versions

Note

Type A-2Tie rods, outer restraints, carried onsilencing rubber sockets

Type A-4Design as type A-2, additional innerrestraints, carried on spherical washers and conical seats

DN 20 - DN 150

DN 175 - DN 1000

Number of tie rods depending onpressure

ANSI DINEN

A-2/A-4/2-C12

100°


138

DN BL*

mm

Pressurerate

bar


mm

ø CRaised face

outer ømm


mm

ø DFlangeouter ø

mm

bFlange

thicknessmm

HFlangeheightmm

PNFlange

connectionEN 1092

ø ERaised face

inner ømm

195195220230240260300350385420440465520570630690795850960

1075119512951410

1616161616182020222222252525303035354040404040

115115140150165185200220250285315340395445505565615670780895

101511151230

5555788697

113135160184212236265318373420460575625725850950

10501150

5151728195

115127151178206230260313363423474532 584684800900

10081108

30303945567284

109133161185209262312360410450500600700800900

1000

1616161616161616161616101010101010101010101010

20 10025 10032 12540 12550 12565 12580 150

100 150125 150150 150175 150200 175250 175300 200350 200400 200450 250500 250600 250700 275800 275900 300

1000 300

16 16 1616 1616 16 16 1616161010101010 1010106 644

22±322±331±339±349±365±377±3

100±3127±3153±3176±3202±3252±3303±3344±3396±3435±8485±8585±8

690±10790±10890±10990±10

20253240506580

100125150175200250300350400450500600700800900

1000

DN Δ latLateral

movement

± mm1010151515151515151515151515151530303030303030

––0.60.60.60.60.650.650.70.750.80.90.90.90.950.950.350.350.350.50.50.60.6

Weighttype A-2

approx.kg

3.93.95.15.66.38.0

10.712.616.819.619.922.727.531.646.757.885.798.0

133.9173.5213.6250.0295.5



Rubber expansion jointType AR-2 and AR-4Lateral expansion joint DN 20 – DN 400



pipes■ for compensating lateral

movement■ to compensate for installation

inaccuracies■ in sprinkler systems

Applications

AR-2/AR-4/1-C12

ANSI DINEN

Type AR-2

Type AR-4

139

Rubber bellows PN 25■■ Highly elastic molded bellows in various rubber grades■■ High-tensile synthetic fibre reinforcement■■ Wire-reinforced self-sealing rubber rim■■ Electrical impedance 103 to 106 Ohm (DIN IEC 93, VDE 0303-30)


EPDMNBR

orange/yellowred/yellow




ears to carry the tie rods■■ Flange drilling for through bolts■■ Special turned groove for rubber







130°


Structure type AR-2Lateral expansion joint consisting of arubber bellows with rotating flangesand tie rods (outer and inner re-straints) to absorb reaction force frominternal pressure or vacuum

Structure type AR-4




MaterialsStandard: tie rods 8.8Others: stainless steelCorrosion protectionStandard: electrogalvanizedOthers: hot-dip galvanized




Technical design



Versions

Type AR-2Tie rods, outer restraints, carried onsilencing rubber sockets

Type AR-4 Design as type AR-2, additional innerrestraints, carried on spherical wash-ers and conical seats

DN 20 - DN 150


ANSI DINEN

AR-2/AR-4/2-C12

140

DN 200 - DN 300

Note

130°°


DN BL

mm

195195220230240260300350385420485550610680745

161616161618202022222525253030

115115140150165185200235270300360425485555620

5555788697

113135160184212265318373420460

5151728195

115127151178206260313363423474

30303945567284

109133161209262312360410

252525252525252525252525252525

20253240506580

100125150200250300350400

100100125125125125150150150150175175200200200

252525252525252525252525252525

22±322±331±339±349±365±377±3

100±3127±3153±3202±3252±3303±3344±3396±3

Pressurerate

bar


mm

ø CRaised face

outer ømm


mm

ø DFlangeouter ø

mm

bFlange

thicknessmm

HFlangeheightmm

PN*Flange

connectionEN 1092

ø ERaised face

inner ømm

* also available with flanges PN 16 and PN 10.

20 1025 1032 1540 1550 1565 1580 15

100 15125 15150 15200 15250 15300 15350 15400 15

3.93.95.15.66.27.6

10.713.818.621.227.335.442.574.085.7

––00.50.40.50.60.60.50.40.60.60.60.650.8

DN Δ latLateral

movement

± mm

WeighttypeAR-2

approx.kg



Rubber expansion jointType AS-2 and AS-4 Lateral expansion joint DN 25 - DN 400

Applications

AS-2/AS-4/1-C12

DINENANSI

■ for reducing thermal and mechanical tension in pipes andtheir system components, e.g.■ pumps■ compressors■ motors


pipes■ for compensating lateral

movement■ to compensate for installation

inaccuracies■ to meet fire protection

regulations■ shipbuilding industry■ in heating plants

141


Structure type AS-2Lateral expansion joint consisting of arubber bellows with rotating flangesand tie rods (outer and inner re-straints) to absorb reaction force frominternal pressure or vacuum

Structure type AS-4

STENFLEX® type AS-2 used in an industrial plant

Type AS-4

Rubber bellows PN 16■■ Highly elastic molded bellows in various rubber grades■■ Steel wire cord reinforcement■■ Wire-reinforced self-sealing rubber rim■■ Electrical impedance 103 to 106 Ohm (DIN IEC 93, VDE 0303-30)


EPDMNBR

orange/bluered/blue




ears to carry the tie rods■■ Flange drilling for through bolts,








130°°

Type AS-2





flame-proof




Technical design

Flange versions

Versions

Type AS-2Tie rods, outer restraints, carried onsilencing rubber sockets

Type AS-4Design as type AS-2, additional innerrestraints, carried on spherical washers and conical seats


DN 25 - DN 150

DN 175 - DN 400

DINENANSI

AS-2/AS-4/2-C12

142

Note

■■ CE (DGR 97/23/EC)■■ American Bureau of Shipping■■ Bureau Veritas■■ Det Norske Veritas

Certificates■■ Germanischer Lloyd■■ Lloyd´s Register of Shipping■■ TÜV Süddeutschland/DIN 4809Others see technical annex



Subject to technical alterations anddeviations resulting from the manu-facturing process.Chemicals used for water treatment(particularly in heating systems andcoolant systems) can corrode the ma-terials of the rubber expansion joint.According to VDI Directive 2035, DIN 4809 part 1 and VGB R 455P, themanufacturer of the chemicals muststate that the materials used in theexpansion joint, especially for the rub-ber bellows, will not be damaged bythe chemicals.

130°°

From DN 200 higher pressure rate available on request.

Please comply with the general tech-nical instructions regarding reactionforce, moving force, fixed point load,installation instructions etc.

DN BL

mm

195220230240260300350385420440465520570630690

161616161820202222222525253030

115140150165185200220250285315340395445505565

78788697

113135160184212236265318373420460

72728195

115127151178206230260313363423474

393945567284

109133161185209262312360410

161616161616161616161010101010

253240506580

100125150175200250300350400

125125125125125150150150150150175175200200200

161616161616161616161010101010

31±331±339±349±365±377±3

100±3127±3153±3176±3202±3252±3303±3344±3396±3

Pressurerate

bar


mm

ø CRaised face

outer ømm


mm

ø DFlangeouter ø

mm

bFlange

thicknessmm

HFlangeheightmm

PNFlange

connectionEN 1092

ø ERaised face

inner ømm

25 1032 1540 1550 1565 1580 15

100 15125 15150 15175 15200 15250 15300 15350 15400 15

4.25.15.66.27.9

10.712.616.819.620.323.228.132.244.758.6

–0000

0.20.4

0.650.650.70.70.7

0.750.50.3

DN Δ latLateral

movement

± mm

WeighttypeAS-2

approx.kg



Rubber expansion jointType B-2 and B-4 Highly flexible lateral expansion joint DN 32 – DN 400

■ for compensating large axialand lateral movements


■ for muffling vibration andnoise at appliances


■ power engineering■ chemical industry

Applications

B-2/B-4/1-C12

ANSI100

°DINEN

Type B-2DN 32 - DN 150

Type B-4DN 32 - DN 150

143

Rubber bellows PN 16■■ Very elastic molded bellows with specially high convolution in various

rubber grades■■ Synthetic fibre reinforcement■■ Wire-reinforced self-sealing rubber rim■■ Electrical impedance 103 to 106 Ohm (DIN IEC 93, VDE 0303-30)


Structure type B-2Lateral expansion joint consisting of arubber bellows with rotating flangesand tie rods (outer and inner re-straints) to absorb reaction force frominternal pressure or vacuum

Structure type B-4


EPDMNBR

orangered



FlangesVersion ■■ DN 32 – DN 150 flanges with sta-

bilizing collar and through boltsand with ears to carry the tie rods

■■ DN 175 – DN 400 flanges drilledwith threaded holes and with seg-ments to carry the tie rods

■■ Special turned groove for rubberrim

DimensionsStandard: DN 32 - DN 175 (PN 16)



MaterialsStandard: 1.0038 (S235JR)Others: 1.4541, 1.4571etc.Corrosion protectionStandard: DN 32 – DN 400

electrogalvanizedOthers: hot-dip galvanized, special











Technical design

Flange versions

Versions

DN 32 - DN 150

DN 175 - DN 400



Weighttype B-2approx.

kg

Type B-4DN 32 - DN 150 Tie rods, outer andinner restraints, carried in silencingsocketsDN 175 - DN 400 Tie rods, outer andinner restraints, carried in segments,on spherical washers and conicalseats

B-2/B-4/2-C12

ANSI100

°DINEN

144

DN Δ latLateral

movement± mm


1515151520202525253535353535

6.06.06.68.28.9

10.913.917.124.026.031.043.050.060.0


Note

3240506580

100125150175200250300350400

DN 32 - DN 150

DN 175 - DN 400

DN BL

mm

Pressurerate

bar


mm

ø CRaised face

outer ømm


mm

ø DFlangeouter ø

mm

bFlange

thicknessmm

HFlangeheightmm

PNFlange

connectionEN 1092

ø ERaised face

inner ømm

Type B-2DN 32 - DN 150 Tie rods, outer restraints, carried in silencing socketsDN 175 - DN 400 Tie rods, outer restraints, carried in segments, onspherical washers and conical seats

220220230260280320350400425460510575635685

1616161618181818182022242424

150150165185200220250285315340395445505565

100100115144167197230266282320374443485535

757586

105118137166191217264314370424474

4242617182

101130150183207260313354407

1616161616161616161010101010

3240506580

100125150175200250300350400

125125125125150150150150100125125150150150

1616161616161616161010101010

30±330±340±361±374±392±3

116±3139±3177±3201±3251±3302±3347±3392±3

Rubber expansion joint ■ Type C-31 Lateral expansion joint DN 300 – DN 3600

■ for compensating lateral movement

■ for reducing thermal and mechanical tension in pipes andtheir system components, e.g.■ pumps■ condensers





Applications

C-31/1-C12

ANSI100°

DINEN

STENFLEX® type C-31 in a powerplant

145

Rubber bellows PN 4 / PN 10 / PN 16■■ Elastic robust bellows in various rubber grades■■ Synthetic fibre reinforcement■■ Full-faced self-sealing rubber flanges with drilling for through bolts■■ Electrical impedance 103 to 106 Ohm (DIN IEC 93, VDE 0303-30)

Structure type C-31


EPDMNBRCIIR

orangeredwhite




stabilizing collar■■ With ears or with second bolt circle

to carry the tie rods (depending on DN and PN)

■■ Flange drilling for through boltsDimensionsStandard: PN 10


MaterialsStandard: 1.0038 (S235JR),

1.0577 (S355J2)Others: stainless steel, etc. Corrosion protectionStandard: DN 300 - DN 500



■■ Lateral expansion joint consistingof a rubber bellows and press-on retaining flanges and tie rods

■■ Tie rods (outer restraints) to absorbreaction force from internal pres-sure

■■ Alternative: Tie rods (outer and in-ner restraints) to absorb reactionforce from internal pressure orvacuum

■■ Available in various bellowsgeometries and special lengths


Tie rod restraints

■■ Tie rods carried on sphericalwashers and conical seats


Customized

production

Certificates■■ CE (DGR 97/23/EC)■■ Drinking water■■ TÜV (KTA)


Technical design


4 bar* 10 bar* 16 bar*+100 °C +100 °C +100 °C≥ 15 bar ≥ 30 bar ≥ 48 bar

with vacuum supporting ring (at permanent vacuum)

DN 300 - 2400PN 4

DN 300 - 1000PN 10

DN 300 - 1000PN 16

DN Pressurerate

bar

ø diBellows inner

ø toler-ance±1%

mm

hRubber-flange

thicknessmm

ø DaOuter ø

restrainer flange

mm

BL mmat rated pressure

ø WConvolu-

tion øunpressurized

mm

Weight

approx.kg

ø WConvolu-

tion øunpressurized

mm

Weight

approx. kg

Values are based on flange dimensions according to EN 1092 PN 10.Lengths (BL) may vary and depend on flange drilling, operating pressure, possible vacuum, operating temperature.Larger sizes (DN) on request.


without vacuum supporting ringSteel flangeBellows with vacuum supporting ring

ANSI100°

DINEN

C-31/2-C12

Versions

4 bar 10 bar 16 bar

BL mm at rated pressure

4 bar 10 bar 16 bar

on

req

uest

on

req

uest

on

req

uest

on

req

uest

146

Type C-31 Lateral expansion joint, outer restraints

Type C-31 Lateral expansion joint, outer and innerrestraints, with vacuum supporting ring


DN

300350400450500600700750800900

10001100120013001400150016001700180020002100220023002400

303030303030303030303030303030303030303030303030

303030303030303030303035353535353535353535353535

Δ latLateral

movement± mm

with vacuumsupporting ring

Δ latLateral

movement± mm

NotePlease comply with the general tech-nical instructions regarding reactionforce, moving force, fixed point load,installation instructions etc.Subject to technical alterations anddeviations resulting from the manu-facturing process.

without vacuumsupporting ring

300350400450500600700750800900

10001100120013001400150016001700180020002100220023002400

300350400450500600700750800900

10001100120013001400150016001700180020002100220023002400

595655715765820930

106511351185128514201535164517851895201521352235233525452660277028702980

413463513563613713813863923

102311231268136814681568166817681868196821682268237824782578

86100118132144173255294357397539545665800970

107013001360153018752115243526452865

275275275275275275275275275275275350350350350375375375375375375400425425

275275275275275275275275275300300

275275275275275275300300300300325

92108121137149205263343363453555565715830

1005121013401515157519352175249526052940

413463513563613713813863923

102311231310141015101610171018101910201022102310242025202620

151515151515151520202020202020202020202020252525

275275275275275275275275275275275325325325325325350350350350350375375400

275275275275275275275275275300300

275275275275275275300300300300325

4/10/164/10/164/10/164/10/164/10/164/10/164/10/164/10/164/10/164/10/164/10/16

4444444444444


C-32/C12

FlangesMaterialsStandard: 1.0038 (S235JR),

1.0577 (S355J2) Others: stainless steel, etc. Corrosion protectionStandard: DN 300 - DN 700



ANSI100

°DINEN

Versions

147

■ for compensating lateral move-ment






Structure type C-32

Applications



Rubber bellows PN 4 / PN 10■■ Elastic robust bellows in various rubber grades■■ Synthetic fibre reinforcement■■ Full-faced self-sealing rubber flanges with drilling for through bolts■■ Electrical impedance 103 to 106 Ohm (DIN IEC 93, VDE 0303-30)


stabilizing collar■■ Mating flanges to carry the tie rods■■ Flange drilling for through boltsDimensions Standard: PN 10

according to EN 1092Others: DIN EN, ANSI, BS etc. Connection dimensions see technicalannex


EPDMNBRCIIR

orangeredwhite



■■ Lateral expansion joint consistingof a rubber bellows and press-onretaining flanges

■■ Restrainer flanges as matingflange to be welded on the pipe atsite



Type C-32 Lateral expansion joint, outer and innerrestraintsDimensions and movement compen-sation on request

Customized

production


Tie rod restraints





4 bar* 10 bar*+100 °C +100 °C≥ 15 bar ≥ 30 bar

with vacuum supporting ring at permanent vacuum



PN 4DN 300 - 1000

PN 10


Structure type C-35■■ Lateral expansion joint consisting

of a rubber bellows and press-on retaining flanges

■■ Restrainer segments for fitting onthe mating flanges on site


C-35/C12

ANSI100

°DINEN

Versions

148



Type C-35 Lateral expansion joint, outer and innerrestraints on segmentsDimensions and movement compen-sation on request

Customized

production

Flanges/SegmentsMaterialsStandard: 1.0038 (S235JR),

1.0577 (S355J2) Others: stainless steel, etc. Corrosion protectionStandard: DN 300 - DN 700





stabilizing collar■■ Segments to carry the tie rods to

fit on mating flanges■■ Flange drilling for through boltsDimensions Standard: PN 10

according to EN 1092Others: DIN EN, ANSI, BS etc. Connection dimensions see technicalannex


EPDMNBRCIIR

orangeredwhite










Applications


Tie rod restraints





4 bar* 10 bar*+100 °C +100 °C≥ 15 bar ≥ 30 bar




PN 4DN 300 - 1000

PN 10

Rubber expansion joint ■ Type E Cylindrical lateral expansion joint DN 20 – DN 250


■ to improve the flow of media(smooth passage)

■ for deposit-free passage ofsolid matter, e.g. at pumps forgypsum suspension


■ as cylindrical elastic transitionpiece at■ pumps■ pipelines■ motors■ ventilating fans/blowers■ cooling water lines

■ cement industry■ conveyance technology

Applications

E/1-C12


ANSI100

°DINEN

■■ Cylindrical bellows without convolution in various rubber grades■■ Synthetic fibre reinforcement■■ Wire-reinforced self-sealing rubber rim (type E)■■ Electrical impedance 103 to 106 Ohm (DIN IEC 93, VDE 0303-30)


Possible uses

EPDMNBR

orangered

Cooling, hot, waste, brackish water, acids, lyesOil


Lateral expansion joint consisting of acylindrical rubber bellows withoutconvolution and rotating flanges

Structure type E

Type E

Other sizes or lengths on request

Special versionsFlangesMaterialsStandard: 1.0038 (S235JR)Others: stainless steel, etc.Corrosion protectionStandard: DN 20 - DN 250

electrogalvanizedOthers: special varnish,

special coating, etc.

Version■■ Special turned groove for rubber

rim■■ Flange drilling for through boltsDimensionsStandard: DN 20 - DN 175 (PN 16)



■■ CE (DGR 97/23/EC)

Certificates

149



10 bar*+100 °C≥ 30 barnot suitable

Technical design

ANSI100

°DINEN

E/2-C12

Versions

DN BL

mm

Δ latLateral

movement± mm

Pres-surerate bar

Weight

approx.kg


mm

ø CRaisedface ømm

ø DFlangeouter ø

mm

bFlange

thicknessmm

Dimensions standard program type E

PNFlange

connectionEN 1092

150

Type ECylindrical lateral expansion jointwith rotating flanges

Please comply with the general tech-nical instructions regarding reactionforce, moving force, fixed point load,installation instructions etc.Reaction force, moving force andfixed point load have to be calculatedas for universal expansion joints (notie rod restraints available).Subject to technical alterations anddeviations resulting from the manu-facturing process.

20253240506580

100125150200250

160160200200230290310350350350350350

101010101010101010101010

25253945567284

109133161209262

5151728195

115127151178206260313

115115140150165185200220250285340395

161616161618202022222525

303025252520202020201515

2.32.33.43.94.75.87.99.2

12.114.721.326.3

161616161616161616161010

Note

Rubber expansion joint ■ Type G Conical lateral expansion joint DN 25 – DN 250

G/1-C12

ANSI100

°DINEN

Type G

Rubber bellows PN 6 / PN 10 / PN 16■■ Conical bellows without convolution in various rubber grades■■ Synthetic fibre reinforcement■■ Wire-reinforced self-sealing rubber rim■■ Electrical impedance 103 to 106 Ohm (DIN IEC 93, VDE 0303-30)

Lateral expansion joint consisting of aconical rubber bellows without con-volution and rotating flanges.

Structure type G

FlangesMaterialsStandard: 1.0038 (S235JR)Others: stainless steel, etc.Corrosion protectionStandard: electrogalvanizedOthers: hot-dip galvanized, special


Version■■ Special turned groove for rubber

rim■■ Flange drilling for through boltsDimensionsStandard: DN 25 - DN 150 (PN 16)



151


Possible uses

EPDMNBR

orangered

Cooling, hot, waste, brackish water, acids, lyesOil



■ to improve flowing of media(smooth passage)

■ for deposit-free passage ofsolid matter, e.g. at pumps forgypsum suspension


■ as conical, elastic reducingadapter at■ pumps■ pipelines■ motors■ ventilating fans/blowers■ cooling water lines

■ cement industry■ conveyance technology

Applications

Other sizes or lengths on request

Special versions

■■ CE (DGR 97/23/EC)

Certificates





Technical designDN 125:80 - DN 250:200

PN 10DN 40:25 - DN 100:80

PN 16

ANSI100

°DINEN

G/2-C12

Dimensions standard program type G Versions

Type GConical lateral expansion joint with rotating flanges

152

NotePlease comply with the general tech-nical instructions regarding reactionforce, moving force, fixed point load,installation instructions etc.Reaction force, moving force andfixed point load have to be calculatedas for universal expansion joints (notie rod restraints available).Subject to technical alterations anddeviations resulting from the manu-facturing process.

40 : 2540 : 3250 : 3250 : 4065 : 4065 : 5080 : 5080 : 65

100 : 65100 : 80125 : 80125 : 100150 : 80150 : 100150 : 125200 : 125200 : 150250 : 150250 : 200

250250250250250250250250250250250250250250250250250250250

30303030303030303025252525252525252525

3.23.74.14.45.25.66.37.17.58.29.7

10.010.911.412.816.017.219.322.4

16161616161616161616101010101010101010

45 : 3045 : 3956 : 3956 : 4572 : 4572 : 5684 : 5684 : 72

109 : 72109 : 84133 : 84133 : 109161: 84161 : 109161 : 133209 : 133209 : 161262 : 161262 : 209

81 : 5181 : 7295 : 7295 : 81

115 : 81115 : 95127 : 95127 : 115151 : 115151 : 127178 : 127178 : 151206 : 127206 : 151206 : 178260 : 178260 : 206313 : 206313 : 260

150 : 115150 : 140165 : 140165 : 150185 : 150185 : 165200 : 165200 : 185220 : 185220 : 200250 : 200250 : 220285 : 200285 : 220285 : 250340 : 250340 : 285395 : 285395 : 340

16 : 1616 : 1616 : 1616 : 1618 : 1618 : 1620 : 1620 : 1820 : 1820 : 2022 : 2022 : 2022 : 2022 : 2022 : 2225 : 2225 : 2225 : 2225 : 25

16/1616/1616/1616/1616/1616/1616/1616/1616/1616/1616/1616/1616/1616/1616/1610/1610/1610/1610/10

DN BL

mm

Δ latLateral

movement±mm

bFlange

thicknessmm

Pres-surerate bar

Weight

approx.kg

ø di1:ø di2Bellowsinner ø

mm

ø C1:ø C2Raisedface ømm

ø D1:ø D2Flangeouter ø

mm

PNFlange

connection EN 1092

Rubber expansion joint ■ Type R-2Lateral expansion joint DN 25 – DN 300


Applications

■■ Flat-convoluted molded bellows in various rubber grades■■ Synthetic fibre reinforcement■■ Wire-reinforced self-sealing rubber rim■■ Electrical impedance 103 to 106 Ohm (DIN IEC 93, VDE 0303-30)

R-2/1-C12


Tie rod restraints

Flanges

■■ DN 25 – DN 150 Tie rods carriedon silencing rubber sockets

■■ DN 200 – DN 300 Tie rods carriedon spherical washers and conicalseats


MaterialsStandard: 1.0038 (S235JR)Others: 1.4571Corrosion protectionStandard: electrogalvanizedOthers: hot-dip galvanized, special


EPDMNBRCIIR

orangeredwhite



DINEN

Lateral expansion joint consisting of arubber bellows with rotating flangesand tie rods (outer restraints) to ab-sorb reaction force from internal pres-sure.

Structure type R-2

■■ CE (DGR 97/23/EG)■■ Bureau Veritas■■ Det Norske Veritas■■ Lloyd’s Register of Shipping■■ Drinking water

Certificates

153

Version■■ Flanges with stabilizing collar and






ANSI100

°





■ to compensate for ground andfoundation settlement or tanksettlement during filling


length 130 mm




Technical design




Note

R-2/2-C12

DINEN

Versions


DN 25 - DN 150

DN 200 - DN 300

Type R-2 Tie rods, outer restraints, carried onsilencing rubber sockets

DN 25 - DN 150

From DN 200 higher pressure rate available on request.

154

Type R-2 Tie rods, outer restraints, carried onspherical washers and conical seats

DN 200 - DN 300

ANSI100

°

DN BL

mm

210220230240260300350385420465520570

161616161820202222252525

115140150165185200220250285340395445

888896

107123135160184212260313363

72728195

115127151178206260313363

393945567284

109133161209262312

161616161616161616101010

253240506580

100125150200250300

130130130130130130130130130130130130

161616161616161616101010

31±331±339±349±365±377±3

100±3127±3153±3202±3252±3303±3

Pressurerate

bar


mm

ø CRaised face

outer ømm


mm

ø DFlangeouter ø

mm

bFlange

thicknessmm

HFlangeheightmm

PNFlange

connectionEN 1092

ø ERaised face

inner ømm

253240506580

100125150200250300

151515151515151515151515

–0.60.60.60.70.650.60.750.650.70.70.8

4.55.15.66.37.7

10.512.516.519.222.026.832.3

DN Δ latLateral

movement

± mm

Weight

approx.kg



155

Rubber-expansion joint ■ Type RS-2Lateral-expansion joint DN 25 - DN 300


Applications

■■ Flat-convoluted molded bellows in various rubber grades ■■ Steel wire cord reinforcement■■ Wire-reinforced self-sealing rubber rim■■ Electrical impendance < 100 Ohm (DIN IEC 93, VDE 0303-30)

RS-2/1-C12

Rubber grade* Color code Possible uses

EPDMNBR

orange/bluered/blue



DINEN

Lateral-expansion joint, consisting ofa rubber bellows with rotating flangesand tie rods (outer restraints) to absorb reaction force from internalpressure

Structure type R-2

ANSI130

°

■ or reducing thermal and mechanical tension in pipes andtheir system components, e.g.■ pumps■ compressors■ motors

■ for muffling vibrations and noise■ at appliances ■ in cooling water and lub oil

pipes



■ to meet fire protection regulations

■ shipbuilding industry■ in heating plants

flame-proof

Version■■ Flanges with stabilizing collar and







Flanges

Tie rod restraints■■ DN 25 – DN 150 Tie rods carried

on silencing rubber sockets■■ DN 200 – DN 300 Tie rods carried



■■ CE (PED 97/23/EC)■■ Bureau Veritas■■ Germanischer Lloyd■■ Lloyd’s Register of Shipping■■ TÜV/DIN 4809 (DN 25-200)■■ Det Norske Veritas■■ MED

Certificates

Accessories■■ Vacuum supporting ring■■ Internal guide sleeve■■ Flame-proof protective cover■■ Protective tubeMax. operating pressure to be set 30 % lower for shock loads.

*Please consider a decrease of pressure due to temperature (see technical annex).



Technical design

156

DINENANSI

130°



Please comply with the general tech-nical instructions regarding reactionforce, moving force, fixed point load,installation instructions etc.Subject to technical alterations anddeviations resulting from the manu-facturing process.Chemicals used for water treatment(particularly in heating systems andcoolant systems) can corrode the ma-terials of the rubber expansion joint.According to VDI Directive 2035, andVGB R 455, the manufacturer of thechemicals must state the data indicat-ing that the materials used in the ex-pansion joint, especially for the rubberbellows, will not be damaged by thechemicals.

Note

RS-2/2-C12

Versions

DN 25 - DN 150

Type RS-2 Tie rods, outer restraints, carried onsilencing rubber sockets

DN 25 - DN 150


Type RS-2 Tie rods, outer restraints, carried onspherical washers and conical seats

DN 200 - DN 300Number of tie rods depending onpressure

DN 200 - DN 300

DN BL

mm

210220230240260300350385420465520570

161616161820202222252525

115140150165185200220250285340395445

888896

107123135160184212260313363

72728195

115127151178206260313363

393945567284

109133161209262312

161616161616161616101010

253240506580

100125150200250300

130130130130130130130130130130130130

161616161616161616101010

31±331±339±349±365±377±3

100±3127±3153±3202±3252±3303±3

Pressurerate

bar


mm

ø CRaised face

outer ømm


mm

ø DFlangeouter ø

mm

bFlange

thicknessmm

HFlangeheightmm

PNFlange

connectionEN 1092

ø ERaised face

inner ømm

253240506580

100125150200250300

151515151515151515151515

–0

0.20.20.40.40.40.40.40.40.50.6

4.95.15.66.37.7

10.412.416.519.222.030.037.0

DN Δ latLateral

movement

± mm

Weight

approx.kg



Rubber expansion joint ■ Type A-3Angular expansion joint DN 32 – DN 1000

■ for compensating angularmovement

■ as double or triple joint com-pensation system for largemovements■ for ground and foundation

settlement■ for tank settlement during

filling■ in plastic pipe systems■ apparatus engineering and

tank construction■ power station technology

Applications

A-3/1-C12

ANSI100

°DINEN

157

■■ Angular expansion joint consistingof a rubber bellows and flanges

Structure type A-3


Version■■ Oval flanges with stabilizing collar

and hinge restraints■■ Flange drilling for through bolts■■ Special turned groove for rubber rimDimensionsStandard: DN 32 - DN 175 (PN 16)



FlangesMaterialsStandard: 1.0038 (S235JR)Others: stainless steel, etc.Corrosion protectionStandard: DN 32 - DN 175

electrogalvanizedDN 200 - DN 1000anti-corrosion primed

Others: hot-dip galvanized, specialvarnish, special coating,etc.

Certificates

Accessories■■ Vacuum supporting ring■■ Internal guide sleeve■■ Flame-proof protective cover■■ Protective hood

■■ CE (DGR 97/23/EC)■■ Bureau Veritas■■ Det Norske Veritas■■ Lloyd´s Register of Shipping■■ Drinking water■■ TÜV (KTA)Others see technical annex

Hinge restraints■■ Pivot of joint bars at center of

bellows■■ Hinge restraints control bellows

movementMaterialsStandard: 1.0038 (S235JR),

1.0577 (S355J2)Others: stainless steel, etc.Corrosion protectionStandard: DN 32 - DN 175


Others: hot-dip galvanized, specialvarnish and coating, etc

■■ Welded hinge restraints to absorbreaction force from internal pres-sure or vacuum


EPDMNBRCIIR

orangeredwhite






Technical design

DN Δ angAngular

movement± � degrees*


Versions

Type A-3Angular expansion joint with hinge restraints

DN 32 - DN 150

DN 175 - DN 1000

Weight

approx.kg


DN 32 - DN 150

DN 175 - DN 1000

A-3/2-C12

ANSI100

°DINEN

158


Note

From DN 200 higher pressure rate available on request.*The measure BL (length) for DN 400 - 1000 is approx. 6 mm shorter when fitted.

6.06.57.28.6

12.114.017.620.423.134.539.645.270.095.0

155.0190.0250.0290.0360.0425.0550.0

DN BL*

mm

Pressurerate

bar


mm

ø CRaised face

outer ømm


mm

ø DFlangeouter ø

mm

bFlange

thicknessmm

HFlangeheightmm

PNFlange

connectionEN 1092

ø ERaised face

inner ømm

32 2540 2550 2565 2580 20

100 15125 15150 12175 10200 8 250 7300 6350 5400 5450 8500 7600 6700 5800 4,5900 4

1000 3,5

22023024026030035038542044547053055064574084589510201140128513851485

161616182020222222252525283240404545455055

140150165185200220250285315340395445505565615670780895

101511151230

788697

113135160184212236265318373420460575625725850950

10501150

728195

115127151178206230260313363423474532584684800900

10081108

3945567284

109133161185209262312360410450500600700800900

1000

161616161616161616101010101010101010101010

3240506580

100125150175200250300350400450500600700800900

1000

125125125125150150150150150175175200200200250250250275275300300

16161616161616161610101010101010106644

31±339±349±365±377±3

100±3127±3153±3176±3202±3252±3303±3344±3396±3435±8485±8585±8

690±10790±10890±10990±10

Rubber expansion joint ■ Type AS-3Angular expansion joint DN 32 – DN 400


■ as double or triple joint com-pensation system for largemovements■ for tank settlement during

filling■ in plastic pipe systems

■ to meet fire protection regula-tions ■ in shipbuilding industry■ in chemical industry

Applications

AS-3/1-C12

DINENANSI

159

Rubber bellows PN 16■■ Highly elastic molded bellows in various rubber grades■■ Steel wire cord reinforcement■■ Wire-reinforced self-sealing rubber rim■■ Electrical impedance < 100 Ohm (DIN IEC 93, VDE 0303-30)


EPDMNBR

orange/bluered/blue



■■ Angular expansion joint consistingof a rubber bellows and flanges

Structure type AS-3

Version■■ Oval flanges with stabilizing collar

and hinge restraints■■ Flange drilling for through bolts■■ Special turned groove for rubber rimDimensionsStandard: DN 32 - DN 175 (PN 16)



FlangesMaterialsStandard: 1.0038 (S235JR)Others: stainless steel, etc.Corrosion protectionStandard: DN 32 - DN 175



Certificates

Accessories■■ Vacuum supporting ring■■ Internal guide sleeve■■ Protective hood




1.0577 (S355J2)Others: stainless steel, etc.Corrosion protectionStandard: DN 32 - DN 175



130°

■■ CE (DGR 97/23/EC)■■ American Bureau of Shipping■■ Bureau Veritas■■ Det Norske Veritas■■ Germanischer Lloyd■■ Lloyd´s Register of Shipping■■ TÜV/DIN 4809Others see technical annex


flame-proof




Technical design

DN Δ angAngular

movement± � degrees*


AS-3/2-C12

Dimensions standard program Versions

Type AS-3Angular expansion joint with hinge restraints

DN 32 - DN 150

DN 175 - DN 400

Weight

approx. kg

DN 32 - DN 150

DN 175 - DN 400

DINEN

160

NotePlease comply with the general tech-nical instructions regarding reactionforce, moving force, fixed point load,installation instructions etc.Subject to technical alterations anddeviations resulting from the manu-facturing process.Chemicals used for water treatment(particularly in heating systems andcoolant systems) can corrode thematerials of the rubber expansionjoint. According to VDI Directive2035, DIN 4809 part 1 and VGB R455P, the manufacturer of the chemi-cals must state that the materialsused in the expansion joint, especial-ly for the rubber bellows, will not bedamaged by the chemicals.

130°°

From DN 200 higher pressure rate available on request.*The measure BL (length) for DN 400 is approx. 6 mm shorter when fitted.

6.06.57.28.6

12.114.017.620.423.134.539.645.267.093.0

DN BL*

mm

220230240260300350385420450440505560620680

1616161820202222222525253438

140150165185200220250285315340385445505565

788697

113135160184212236265318373425470

728195

115127151178206230260313363423474

3945567284

109133161185209262312360410

1616161616161616161010101010

3240506580

100125150175200250300350400

125125125125150150150150150175175200200200

1616161616161616161010101010

31±339±349±365±377±3

100±3127±3153±3176±3202±3252±3303±3344±3396±3

Pressurerate

bar


mm

ø CRaised face

outer ømm


mm

ø DFlangeouter ø

mm

bFlange

thicknessmm

HFlangeheightmm

PNFlange

connectionEN 1092

ø ERaised face

inner ømm

32 2540 2550 2565 2580 20

100 15125 15150 12175 10200 8250 7300 6350 5400 5

Rubber expansion joint ■ Type C-41 Angular expansion joint DN 300 – DN 3600


■ as double or triple joint com-pensation system for largemovements

■ restraints to absorb reactionforces


Applications

C-41/C12

ANSI100

°DINEN




1.0577 (S355J2)Others: stainless steel, etc.Corrosion protectionStandard: anti-corrosion primedOthers: hot-dip galvanized, special

varnish, special coating, etc.

Version

Type C-41Angular expansion jointDimensions and movement compensation on request

161

Rubber bellows PN 4 / PN 10■■ Elastic, robust bellows in various rubber grades■■ Synthetic fibre reinforcement■■ Full-faced, self-sealing rubber flanges with drilling for through bolts■■ Electrical impedance 103 to 106 Ohm (DIN IEC 93, VDE 0303-30)


EPDMNBRCIIR

orangeredwhite


■■ Angular expansion joint consistingof a rubber bellows and press-on retaining flanges


■■ Various bellows geometries

FlangesVersion■■ Oval press-on retaining flanges

with stabilizing collar and hinge restraints

■■ Flange drilling for through boltsDimensionsStandard: PN 10


MaterialsStandard: 1.0038 (S235JR)

1.0577 (S355J2)Others: stainless steel etc. Corrosion protectionStandard: anti-corrosion primedOthers: hot-dip galvanized, special


Certificates

Accessories■■ Vacuum supporting ring■■ Internal guide sleeve

■■ CE (DGR 97/23/EC)■■ Drinking water■■ TÜV (KTA)■■ crecep



Customized

production

Structure type C-41


4 bar* 10 bar*+100 °C +100 °C≥ 15 bar ≥ 30 bar




PN 4DN 300 - 2800

PN 10


■ as double or triple joint com-pensation system for largemovements

■ restraints to absorb reactionforces


Applications




1.0577 (S355J2)Others: stainless steel, etc.Corrosion protectionStandard: anti-corrosion primed

Certificates

Accessories■■ Vacuum supporting ring■■ Internal guide sleeve



Rubber expansion joint ■ Type C-42 Angular expansion joint DN 300 – DN 3600

C-42/C12

ANSI100

°DINEN

Version

Type C-42Angular expansion jointDimensions and movement compensation on request

Structure type C-42■■ Angular expansion joint consisting

of a rubber bellows and press-onretaining flanges

■■ Restrainer flanges as mating flangeto be welded on the pipe at site,with hinge restraints


■■ Various bellows geometries


stabilizing collar■■ Mating flanges with hinge restraints■■ Flange drilling for through boltsDimensionsStandard: PN 10


MaterialsStandard: 1.0038 (S235JR)

1.0577 (S355J2)Others: stainless steel, etc. Corrosion protectionStandard: anti-corrosion primedOthers: hot-dip galvanized, special


162



EPDMNBRCIIR

orangeredwhite



Customized

production


4 bar* 10 bar*+100 °C +100 °C≥ 15 bar ≥ 30 bar




PN 4DN 300 - 2800

PN 10


Rubber expansion jointType W-1 and W-2 Wall-sealing expansion joint DN 80 – DN 3400

■ to seal ducts on■ vessels, or containers■ wall ducts

■ for compensating axial and lat-eral movement between pipeand wall duct

■ for reliable sealing againstgroundwater

■ process plant engineering■ power station technology■ cement industry

Applications

W-1/W-2/1-C12

90°°

STENFLEX® type W-2 in a power plant

Wall-sealing expansion joint consistingof a flat-convoluted rubber bellowswith press-on retaining flanges

Structure type W-1Wall-sealing expansion joint consistingof a deep-convoluted rubber bellowswith press-on retaining flanges. Suit-able for large movements

Structure type W-2

Split version for retroactive installa-tion on a closed pipe system.

Special version

Rubber bellows PN 1 / PN 2,5■■ Elastic robust bellows in various rubber grades■■ Synthetic fibre reinforcement■■ Bellows with flat convolution (type W-1) or deep convolution (type W-2)■■ Full-faced self-sealing rubber flanges with drilling for through bolts■■ Electrical impedance 103 to 106 Ohm (DIN IEC 93, VDE 0303-30)


EPDMNBR

orangered

Cooling, sea, brackish water, acids, lyesOil

Flanges

MaterialsStandard: 1.0038 (S235JR)Others: stainless steel, etc.Corrosion protectionStandard: anti-corrosion primedOthers: hot-dip galvanized, special


Version■■ Press-on retaining flanges ■■ Flange drilling for through boltsDimensionsStandard: see tables

Accessories■■ Vacuum supporting ring (type W-1)

163

1 bar* 2.5 bar*+90 °C +90 °C≥ 6 bar ≥ 10 bar

with vacuum supporting ring (type W-1 only)

Pressure rateMax. perm. operating pressureMax. perm. temperatureBursting pressureVacuum operation

Technical designType W-1 W-1 and W-2

PN 1 PN 2,5


Certificates■■ CE (DGR 97/23/EG)

Versions

W-1/W-2/2-C12

Type W-1Wall-sealing expansion joint, flat-convoluted

Type W-2Wall-sealing expansion joint, deep-convoluted, for large movements

Installation drawing type W-1

90°°

DNPipeline

DNWall duct

Pressurerate

bar

ø DBellows inner ø

mm

hRubber flange

thicknessmm

ø daFlangeouter ø

mm

n1 x ø d1Drilling

mm

n2 x ø d2Drilling

mm

bFlange

thicknessmm

Δ axAxial

movement± mm

Δ latLateral

movement± mm

Weight

approx.kg

ø diFlangeinner ø

mm

ø K2PCD ø

mm

Dimensions standard program type W-1/ BL 150

Dimensions standard program type W-2

Please inquire for simultaneous (different) movement. Other dimensions on request.

ø K1K1

PCD ømm

200400500800

450800900

1300

10121215

680965

11151420

240490620850

290550680910

80808080

80808090

19.534.048.093.0

12x2316x2324x2324x23

12x1816x2324x2324x23

10101215

2.52.52.52.5

610890

10201260

740102511751480

Bellows Wall duct Pipeline

164


DNPipeline

DNWall duct

Pressurerate

bar

ø DBellows inner ø

mm

hRubber flange

thicknessmm

ø daFlangeouter ø

mm

n1 x ø d1Drilling

mm

n2 x ø d2Drilling

mm

bFlange

thicknessmm

Δ axAxial

movement± mm

Δ latLateral

movement± mm

Weight

approx.kg

ø diFlangeinner ø

mm

ø K2PCD ø

mm

ø K1K1

PCD ømm

Bellows Wall duct Pipeline

80100150200250250300400500600700800900

100011001200140016001800200022002400250030003400

250250300400450500500600700800900

10001100120013001400160018002000220024002600270032003600

88

1212121212121212121212121212121515151515151520

380380560615690690690785890990

109512001300140015001610180020002200240026002780290034103750

120140185240315285350430535635730840940

104011401250144016401840206022602460256030503450

160190265320395365430510615715810920

1020112012201330152017201920214023402540264031303530

20202020202020202020202020202020202020202020202020

30303030303030303030303030303030303030303030303030

10.011.523.526.529.529.531.536.543.048.564.573.573.595.0

105.0114.5161.5148.5165.0179.0196.0210.0220.0270.0330.0

8x148x14

12x2312x2312x2312x2312x2316x2316x2316x2324x2324x2324x2324x2324x2324x2324x2328x2332x2336x2336x2348x2348x2348x23

108x23

8x148x148x23

12x2312x2312x2312x2316x2316x2316x2324x2324x2324x2324x2324x2324x2324x2328x2332x2336x2336x2348x2336x2348x23

108x23

10101010101010101010151515151515151515151515151515

1/2.51/2.51/2.51/2.51/2.51/2.51/2.51/2.51/2.51/2.51/2.51/2.51/2.51/2.51/2.51/2.51/2.51/2.51/2.51/2.51/2.51/2.51/2.51/2.51/2.5

290290440495570570570665770870975

10501180128013801490163618802080228024802665278532803610

430430640695770770770865970

1070117512801380148015801690188020802280248026802880298034903830

Dimensions standard program type W-1/ BL 280

2200 2400 15 2600 2260 2340 40 60 22636x23 36x23 151/2,5 2480 2680

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