High-Pressure Water AccessoriesOverview

WOMA designs, manufactures andmarkets high-pressure water jettingaccessories for cleaning, decoating,decontamination, paint stripping,surface preparation, cutting anddemolition. WOMA’s high-pressurewater accessories meet the requirementsof the “Richtlinien für Flüssigkeits-strahler” ZH 1/406, October 1987.

Accessory programme:

� Flexible high-pressure hoses foroperating pressures up to 4,000 barand nominal widths between 4 mmand 32 mm for connecting pressuregenerating units and water tools.

� High-pressure adapters for connect-ing high-pressure hoses as well ashoses and pressure generating unitsor water tools.

� Strain relief devices for safepositioning of high-pressure hoses.

� Sewer cleaning nozzles for operat-ing pressures up to 300 bar withseveral orifices, directed sidewardsor backwards.

� Self aligning nozzle for operatingpressures up to 200 bar for bottomsewer cleaning.

� Pipe cleaning nozzles for operatingpressures up to 2,500 bar withseveral orifices, directed sidewardsor backwards, for tube bundlecleaning.

� Pipe cleaning nozzles for operatingpressures up to 1,400 bar forapplication in cleaning units for large-diameter pipes.

� Whirl jet nozzles for operatingpressures up to 750 bar for clean-ing partially or fully blocked tubebundles.

� Round jet nozzles with continuousflow channel for operating pressuresup to 2,000 bar for water tools.

� Round jet nozzles with sapphireinserts for operating pressures up to3,500 bar for ultra-high pressurewater tools.

� Fan jet nozzles for operatingpressures up to 2,000 bar for clean-ing tools.

� Injection nozzles for operatingpressures up to 400 bar for suckingand mixing of abrasives inwater-abrasive cleaning tools.

� Cutting heads for operating pressuresup to 3,000 bar (resp. 4,000 bar)for sucking and mixing of abrasivesin on-site cutting units (resp. JetCutting units).

� Abrasive storage vessels and abrasivehoses for storage and transport ofabrasives.

� Foot valves for operating pressuresup to 1,500 bar – mechanically orelectrically operated.

� Multiple consumer systems foroperating pressures up to 3,000 barfor running several water toolssimultaneously with one pressuregenerating unit.

� Accessories for high-pressure hotwater jetting systems for operatingpressures up to 800 bar and watertemperatures up to 95°C.

� Positioning devices for operatingpressures up to 1,400 bar withworking lengths up to 12 m forvessel cleaning tools.

� Body support and splash guard forwater tools.

� Protective clothes for water jettingoperators.

� First Aid cards for water jettingoperators.

Hoses · Nozzles ·Valves · Applications

Self-aligning nozzle type Skip-Jack with fan nozzle for bottom sewer cleaning

Decoating of pipelines

Cleaning of cement kilns

Internal cleaning of pipes

Water jet assisted pile driving

Special accessorywith fan jet nozzle

type 95 for hotdescaling of steel

Hydraulically drivenwater tool withround jet nozzletype 1 for concretehydrodemolition

Pneumatically drivenon-site ultra-high

pressure cutting systemwith cutting head

type Cutting Head 3000and round jet nozzle

type 10 for demolitionof reinforced concrete

and steel

Positioning device type PV 5000-1 with

self propelling rotating water tool Tankmaster®

for autoclave cleaning

BackringO-Ring

L

� d

WOMA designs and manu-factures high-pressure watersystems, tools and accessoriesfor the following tasks:

� Internal cleaning of vessels,autoclaves and containers

� Cleaning of sewers, pipes,tube bundles etc.

� Paint stripping from gridironsand body skids

� Maintenance of heavytechnical equipment

� Rehabilitation of structuresand buildings

� Environmentally friendlysurface preparation incorrosion protection

� Heavy concrete removal andreinforcement bar exposing

� Emission-free enamel strippingand decoating of surfaces

� Descaling and derusting ofsteel

� Cutting and demolition of construction and heavyequipment

Removal of explosives from shells

Exposing reinforcement bars

Jet-Cutting of foam

High-pressure water tool with rotating nozzle

carrier head and footvalve type FV1500-V-E-EXI

for tube bundle cleaning

Selection of Nozzles

Application of the WOMA Nozzle Flow-Chart:

Example: Volume flow rate: 90 l/min, Operating pressure: 900 bar, Nozzle index ?

Solution: Mark the volume flow rate value at the horizontal axis � go upward up tothe horizontal 900 bar-line � the inter-section point is crossed by an inclined

index-line � follow this line up to theupper rim of the diagram � read index:3.5 � by using this index value, a suitablenozzle can be selected from WOMA’snozzle catalogue.

35

40

45

50

60

6 7 8 9 15 30 50 70 90 150 300 500 700 9005 10 20 40 60 80 100 200 400 600 800

1,500

1,000

800

600

500

400

300

200

150

100

80

60

50

40

30

20

10

1 2 3 4 5 6 10 20 300.5 0.6 0.8 1.21.4 1.6 1.8 2.5 3.5 4.5 5.5 7 8 9 12 14 16 18 25

Nozzle index

Op

erat

ing

pre

ssu

re in

bar

(1 b

ar =

14.

5 ps

i)

Volume flow rate in l/min (1 l/min = 0.264 US gal/min = 0.22 Imp. gal/min)

The WOMA Nozzle Flow-Chart

The WOMA Nozzle Flow-Chartenables the estimation of a nozzle index depending onwater volume flow rate andoperating pressure. If, in turn,the nozzle index is given, thepermissible values for operatingpressure and volume flow ratecan be estimated. Attention: The chart is valid only foroperating pressures up to1,500 bar (22,000 psi) !

Calculation software

WOMA offers computerassisted calculation programmesfor estimating volume flowrate, nozzle diameter, operat-ing pressure, and hydraulicpower. The diagramme shows just some examples of calculated relations.

Vo

lum

e fl

ow

rat

e in

l/m

in1

l/min

= 0

.264

US

gal/m

in =

0.2

2 Im

p. g

al/m

in)

Nozzle diameter in mm(1 mm = 0.004 in)

0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1

30

25

20

15

10

5

0

2,000 bar, continuous flow channel

2,500 bar, continuous flow channel

2,500 bar,sapphire insert

2,000 bar, sapphire insert

Rel

ativ

e p

ress

ure

loss

in b

ar/m

(1 b

ar/m

= 4

.42

psi/i

n)

DN 4 DN 5

Volume flow rate in l/min (1 l/min = 0.264 US gal/min = 0.22 Imp. gal/min)

10 20 30 40 50 100 200 300 400500 1,000

10,000

1,000

100

10

1

0.1

0.01

DN 6

DN 8

DN 10

DN 12

DN 20

DN 25

DN 32

No

min

al h

ose

wid

th in

mm

(1 m

m =

0.0

4 in

)

© W

OM

A A

ppar

ateb

au G

mbH

PR-

ZU –

12/

05-E

· Su

bjec

t to

tec

hnic

al m

odifi

catio

n

High-Pressure Hoses

Estimation of pressure losses in high-pressure hoses

The WOMA Pressure Loss-Chart enables the estimation of relative pressure losses in hoses depending on water volume flow rate and nominal hose width.Attention: Pressure losses in armatures are not considered!

WOMA’s high-pressure hose programme contains hoses with the following technical parameters:

Nominal Maximum oper- Maximum Specific Bend width ating pressure delivery length weight radiusin mm in bar in m in kg/m in mmDN 4 1,000 /2,800 200 0.10 /0.29 75 /140DN 5 1,000 /1,400 200 0.20 /0.25 95 /120

2,500 /4,000 200 0.41 /0.54 150 /200DN 6 1,000 200 0.25 110DN 8 750 /1,000 200 0.22 /0.40 120 /175

1,400 / 2,100 200 0.40 /0.60 175 /2002,500 200 0.75 200

DN 10 1,250 /2,000 100 /200 0.87 /1.01 180 /250DN 12 1,100 /1,400 100 /200 1.22 /1.36 200 /300DN 20 1,000 /1,400 100 /200 2.10 /1.82 280 /350DN 25 700 100 2.08 350DN 32 560 100 2.59 460

Application of the WOMA Pressure Loss-Chart:

Example: Volume flow rate: 100 l/min, Nominal width: 12 mm, Hose length: 40 m, Complete pressure loss ?

Solution: Mark the volume flow rate value at the horizontal axis � go upward up to theinclined DN 12-line � from the intersectionpoint go to the left meeting the pressure loss-axis � read value: 1.3 bar/m � completepressure loss: 1.3 bar/m � 40 m = 52 bar(755 psi)

1 mm = 0.04 in 1 bar = 14.5 psi 1 m = 3.28 ft 1 kg = 2.205 lb

WOMA Apparatebau GmbHWerthauser Str. 77–79 · D-47226 DuisburgP.O. Box 141820 · D-47208 DuisburgPhone +49 2065 304-0 · Fax +49 2065 304-200 Internet: www.woma.de

Delivery ProgrammeHigh-pressure plunger pumpsHigh-pressure water jet systemsHigh-pressure water tools and accessories

Fields of ApplicationAgricultureAutomotive and aviation industryBeverage industryCement industryChemical industryConstruction and concrete industryEngineering industryFood industryGlass, porcelaine, ceramic industryIron, steel and metal industryMiningMunicipal servicesOffshore industryPower industryPublic transportPulp and paper industryShip buildingWood working industry