GESTRA Gravity Circulation Checks and DISCO Non … Gestra nepovratne lopute.pdf · (BSP thread)...

GESTRA Gravity Circulation Checks and DISCO Non-Return ValvesGESTRA DISCOCHECK Dual-Plate Check Valves and DISCO Swing Check Valves

DISCO Non-Return Valves

Gravity Circulation Checks and DISCO Non-Return Valves for sanitation applications and hvac systems.

Type SBO 11, Type SBO 21, Type SBO 31 ............................................................ 29 Type RK 70, Type RK 71 .................................................................................. 30 – 31 Type MB 14 .............................................................................................................. 30

DISCO Non-Return Valves for industrial applications and hvac systems.

Type RK 41, Type RK 44, Type RK 44 S ........................................................ 32 – 33 Type RK 76 ...................................................................................................... 32 – 33 Type RK 86 ...................................................................................................... 34 – 35 Type RK 86 A .................................................................................................. 34 – 35

DISCO Non-Return Valves for special applications.

Type RK 16 A, Type RK 16C .......................................................................... 36 – 37 Type RK 49 ...................................................................................................... 36 – 37

DISCO Check Valves

DISCOCHECK Dual-Plate Check Valves BB, DIN design1)Wafer-type valves DN 50 – 1200 mm (2 – 48"), PN 6 – 160 .......................... 39 – 41

DISCO Swing Check Valves CB Wafer-type valves DN 50 – 300 mm (2 – 12"), PN 6 – 40 .............................. 42 – 43

Swing Check Valves WB Wafer-type valves DN 50 – 300 mm (2 – 12"), PN 10/16 ................................ 44 – 45

NAF-Check ValvesWafer-type valves DN 40 – 1000 mm (11/2 – 40"), PN 10 – 100 ...................... 46 – 47

1) DISCOCHECK Dual-Plate Check Valves BB also available in ASME design.

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procesna oprema

Tailored to Your Needs.

Measuring up to market needs has been the GESTRA philosophy for decades. Backed by many years‘ experience in the design andmanufacture of non-return (check)valves, we offer our customerssuperior solutions for their specificrequirements.Whether your are looking foreconomical non-return valves for hvac services, special non-return valves for chemical applications ordual-plate check valves with(adjustable) dampers – we guaranteeperformance without compromise.

GESTRA – always one step ahead.

These are just some examples ofcustomer requirements which are metby our new DISCO non-return valve RK 86.

“We need non-return valves that conformto as many international standards forend connections as possible.”

“The flange design should preventsquashing of the gasket duringinstallation and guarantee leakproofsealing.”

“Non-return valves should featuredependable bonding connections.”

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Gravity Circulation Checks SBOPN 6

Downstream of circulating pumps in heating and hot water installations toprevent gravity circulation.

Pressure/Temperature Ratings / Material

Dimensions

Pressure Drop ChartsSBO 11, SBO 21 SBO 31

Curve 1: SBO 21 DN 1"Curve 2: SBO 11 DN 1"

Curve 1: SBO 31 DN 3/4"Curve 2: SBO 31 DN 1"

SBO 11

SBO 21

SBO 31

Outlet: Screwed maleInlet: Screwed female

LL

L

Opening Pressures

Application

Outlet: Screwed maleInlet: Union nut

Outlet: Screwed femaleInlet: Union nut

Curve 3: SBO 21 DN 11/4"Curve 4: SBO 11 DN 11/4"

Curve 3: SBO 31 DN 11/4"

Max. service Max. service Materialspressure [bar] temperature [°C] Body Valve cone

6 1301) Brass (CW614N) PPO

1) Max. service temperature at atmospheric pressure

Type SBO 11 SBO 21 SBO 31

Size DN 1" 11/4" 1" 11/4" 3/4" 1" 11/4"

L [mm] 66 82 57 70 39 40 45

Connections Inlet2) G 11/2 G 2 G 11/2 G 2G 11/4 G 11/2 G 2(BSP thread) Outlet G 1 G 11/4 G 1 G 11/4

2) SBO 11 and SBO 21: Thread of union nut

➞ ➞ ➞

➞

Differential pressures at zero volume flow.

Type DN Opening pressure [mbar]Direction of flow

with-out with spring

spring

SBO 111"

1 22 21 2011/4"

SBO 211"

1 20 19 1811/4"3/4"

SBO 31 1" 2 24 22 2011/4"

30

RK 70 / RK 71DN 15 – 100 mm

RK 70DN 125 – 200 mm

MB 14

L

L

Ø D

Ø D

L

Non-Return Valves RK – PN 6 to PN 16Screwed Non-Return Valves MB – PN 16

Type Nominal sizes DN EN reference ASTM equivalent 1)

RK 70 Body 15 – 100 mm Brass (CW617N) Brass

Valve disk Plastic PPE –

Body 125 – 200 mm Grey cast iron (EN-JL 1040) A126 Class A

Plug Plastic Polyamid 6 –

RK 71 Body 15 – 100 mm Brass (CW617N) Brass

Valve disk 1.4571 AISI 316 Ti

MB 14 Body 15 – 100 mm Brass (CW614N) Brass


1) ASTM material similar to EN material.Observe different physical and chemical properties!

Application

Body Material

Type PN

For liquids, especially suited for heating and hot-water RK 70 6 installations. Application as gravity circulation check and

check valve.

RK 71 16For liquids, gases, vapours. Application as gravity

MB 14 16circulation check, vacuum breaker, breather, foot valve, pressure-relief valve or pressure-maintaining valve.

RK Designs

Type Seat Springmetal-to- EPDM FPM PTFE without special Nimonic

metal spring spring spring

RK 70 (Plastic) – – – – – – UseRK 71 X Use RK 41 Use RK 41 – RK 86

MB 14 X – – – – – – –

X : standard– : not available

Earthingconnection

UseRK 86

Dimensions

Pressure/Temperature Ratings

DN [mm] 15 20 25 32 40 50 65 80 100 125 150 200

[in] 1/2 3/4 1 11/4 11/2 2 21/2 3 4 5 6 8

L [mm] 16 19 22 28 31.5 40 46 50 60 90 106 140

RK 70 D [mm] 40 47 56 72 82 95 115 132 152 184 209 264

RK 71 D [mm] 40 47 56 72 82 95 115 132 152 – – –

L [mm] 49 49 61 61 72 72 – – – – – –

MB 14 D [mm] 42 42 62 62 83 83 – – – – – –

A. F. [mm] 30 30 46 46 65 65 – – – – – –

Type PN Nominal size (DN) PMA / TMA / [bar] / [°C]

RK 70 6 15 – 100 mm 6 / -30 1.5 / 100 0.5 / 130

6 125 – 200 mm 6 / -10 1.5 / 100 0.5 / 130

RK 71 16 15 – 100 mm 16 / -60 14 / 200 13 / 250

MB 14 16 1/2" – 2" 16 / -60 14 / 200 13 / 250

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Non-Return Valves RKPN 6 to PN 16

➞ ➞ ➞

➞


Opening Pressures

RK 71*)

➞ ➞ ➞

➞

RK 70*)

Pressure Drop ChartsThe curves given in the chart are validfor water at 20 °C. To read the pressuredrop for other fluids the equivalentwater volume flowrate must becalculated and used in the graph.

The values indicated in the chart areapplicable to spring-loaded valves withhorizontal flow. With vertical flowinsignificant deviations occur only withinthe range of partial opening.

V·W = V· ·

V·W = Equivalent water volume flowin [l/s] or [m3/h]

ρ = Density of fluid(operating condition) in [kg/m3]

V· = Volume of fluid (operatingcondition) in [l/s] or [m3/h]

ρ1000

DN Opening pressures [mbar]

Direction of flowwithout with springspring

15 0.4 7.8 7.4 7

20 0.4 7.8 7.4 7

25 0.4 7.8 7.4 7

32 0.5 9 8.5 8

40 0.5 9.5 9 8.5

50 0.6 9.7 9.1 8.5

65 0.7 10.4 9.7 9

80 0.8 11.6 10.8 10

100 0.9 12.3 11.4 10.5

125 2.0 9.0 7.0 5.0

150 2.5 10.0 7.5 5.0

200 2.5 10.0 7.5 5.0

*) RK 70, 71 are not available with special spring or without spring



15 2.5 10 7.5 5

20 2.5 10 7.5 5

25 2.5 10 7.5 5

32 3.5 12 8.5 5

40 4.0 13 9 5

50 4.5 14 9.5 5

65 5.0 15 10 5

80 5.5 16 10.5 5

100 6.5 18 11.5 5

When selecting valve please consider:Partial opening = Full opening =instable range stable range

Vol

ume

flow

V· W

Pressure drop p

∇

32


RK 41 / RK 44 / RK 44SDN 15 – 100 mm

RK 41 / RK 44 / RK 44SDN 125 – 200 mm

Ø D

L

L

Ø D

RK 76DN 15 – 100 mm

Ø D

Body Material

Type Nominal sizes (DN) DIN reference ASTM equivalent1)

RK 41 Body 15 – 100 mm Special brass (CW710R) Special Brass



Plug 1.4006 A182 F6

RK 44 Body 15 – 100 mm Bronze (CC480 K-GS) B584 C90500



Plug Bronze (CC480 K-GS) B584 C90500

RK 44S Body 15 – 100 mm Bronze (CC480 K-GS) B584 C90500

Valve disk Bronze (CW352H) –

Body 125 – 200 mm Bronze (CC483 K-GC) B505 C90700

Plug Bronze (CC480 K-GS) B584 C90500

RK 76 Body 15 – 100 mm 1.4107 A217-CA15



Application

Pressure/Temperature Ratings with metal-to-metal seat

Type PN Nominal sizes DN PMA / TMA / [bar] / [°C]

RK 4116 15 – 100 mm 16 / -60 14 / 200 13 / 250

16 125 – 200 mm 16 / -10 13 / 200 13 / 300

RK 4416 15 – 100 mm 16 / -200 14 / 200 13 / 250

16 125 – 200 mm 16 / -10 14 / 200 13 / 250

RK 44S 16 15 – 200 mm 16 / -200 16 / 90 16 / 90

RK 76 CL 300 / 40 15 – 100 mm 49.6 / -10 35.8 / 200 31.6 / 300

Type PN

RK 41 16 For liquids, gases, vapours. Application as gravity circulationRK 44 16 check, vacuum breaker, breather, foot valve, pressure-main-RK 44S 16 taining valve, check valve. RK 76 40 RK 41 especially suited for heating installations, RK 44 and RK 44S

for sea water and drinking water, RK 76 for industrial applications

Designs

Type Seat Springsmetal- EPDM FPM PTFE without special Nimonic-

to-metal (–40 up to (–25 up to (–190 up to spring spring spring150°C)1) 200°C)1) 250°C)1)

RK 41 X O O – O O –

RK 44 X O O – O O – UseRK 44S X O O – O – – RK 86

RK 76 X O O O O O O

1) Observe pressure/temp. ratings of the equipment X : standard O : optional – : not available

Earthingconnection

Dimensions

DN [mm] 15 20 25 32 40 50 65 80 100 125 150 200

[inch] 1/2 3/4 1 11/4 11/2 2 21/2 3 4 5 6 8

L [mm] 16 19 22 28 31.5 40 46 50 60 90 106 140

RK 41 D [mm] 40 47 56 72 82 95 115 132 152 184 209 264

RK 44 D [mm] 42 49 58 74 84 97 117 132 152 184 209 264

RK 44S D [mm] 42 49 58 74 84 97 117 132 152 184 209 264

RK 76 D [mm] 45 55 65 75 85 98 118 134 154 – – –

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Non-Return Valves RK – PN 6 to PN 40Short overall length according to DIN EN 558-1, table 11, series 49 (=̂ DIN 3202, part 3, series K4)

➞ ➞ ➞

➞


Opening Pressures

RK 41, RK 44, RK 44S, RK 76

RK 41, RK 44, RK 44S RK 76



15 2.5 10 7.5 5

20 2.5 10 7.5 5

25 2.5 10 7.5 5

32 3.5 12 8.5 5

40 4.0 13 9 5

50 4.5 14 9.5 5

65 5.0 15 10 5

80 5.5 16 10.5 5

100 6.5 18 11.5 5

125 12.5 35 22.5 10

150 14.0 38 24.0 10

200 13.5 37 23.5 10



(DN 125-200)



V·W = V· ·




ρ1000

Vol

ume

flow

V· W

Pressure drop p

∇

34

Non-Return Valves RK – PN 6 to PN 40Short overall length according to DIN EN 558-1, table 11, series 49 (=̂ DIN 3202, part 3, series K4)

Dimensions

RK 86 / RK 86 ADN 15 – 100 mm

Ø D

min

.

L

RK 86 / RK 86 ADN 125 – 200 mm

Ø D

L

Ø D

max

.

Nominal sizes[mm] 15 20 25 32 40 50 65 80 100 125 150 200

[Inch] 1/2 3/4 1 11/4 11/2 2 21/2 3 4 5 6 8

OverallL 16 19 22 28 31.5 40 46 50 60 90 106 140

dimensions ∅ D min 44 53 64 73 83 96 110 128 151 – – –[mm]

∅ D max 67 76 82 93 104 118 136 158 186 – – –

Class 125/150 – – – – – – – – – 194 220 275

PN 10/16 – – – – – – – – – 194 220 275

∅∅ D PN 25 – – – – – – – – – 194 226 286

PN 40 – – – – – – – – – 194 226 293

Class 300 – – – – – – – – – 216 251 308

Weight [kg] 0.27 0.38 0.52 0.8 1.12 1.78 2.43 3.37 5.34 11 14 25


Type PN Nominal sizesDN PMA / TMA / [bar] / [°C]

40/class 300 15 – 100 51 / -10 43.9 / 200 36.9 / 350

RK 86 40/class 300 125 – 200 51 / -10 43.9 / 200 34.5 / 400

RK 86 A 40/class 300 15 – 100 49.6 / -200 35.8 / 200 24 / 550

D min.

D max.

RK 86 / RK 86 ADN 15 – 100 mm

Body Material


RK 86 Body 15 – 100 mm Chromium steel, 1.4317 A 743-CA6-NM


Body 125 – 200 mm GP240GH (1.0619) A 216 WCB

Plug 1.4006 A182 F6

RK 86A Body 15 – 200 mm 1.4408 A 351 CF 8M

Valve disk/plug 1.4571 AISI 316 Ti


Application

RK 86 and RK 86 A – Our Robust All-Rounder

Type PN

RK 86 40/class 300

For liquids, gases, vapours. Application as gravity

RK 86 A 40/class 300

circulations check, vacuum breaker, breather, foot valve, pressure-maintaining valve, check valve. RK 86 A especially suited for low temperatures, aggressive fluids, boiler feedwater lines, and other industrial applications.

Designs

Type Seat Springsmetal- EPDM FPM PTFE without special Nimonic-

to metal (–40 up to (–25 up to (–190 up to spring spring spring2)150°C)1) 200°C)1) 250°C)1)

RK 86 X O O O O O O X/O

RK 86A X O O O O O O X/O

1) Observe pressure/temp. ratings of the equipment2) Required for temperatures above 300 °C3) Earthing connection for DN 15 – 100 as standard.

DN 125 – 200 on request at extra cost.

X : standardO : optional

Earthingconnection3)

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RK 86, 86AWhen selecting valve please consider:Partial opening = Full opening =instable range stable range

(DN 125-200)

➞ ➞ ➞

➞


Opening Pressures

RK 86, 86 A



V·W = V· ·




ρ1000

DN Opening pressures [mbar][mm] Direction of flow

without with springspring

15 2.5 10 7.5 5

20 2.5 10 7.5 5

25 2.5 10 7.5 5

32 3.5 12 8.5 5

40 4.0 13 9 5

50 4.5 14 9.5 5

65 5.0 15 10 5

80 5.5 16 10.5 5

100 6.5 18 11.5 5

125 12.5 35 22.5 10

150 14.0 38 24.0 10

200 13.5 37 23.5 10

Vol

ume

flow

V· W

Pressure drop p

∇

36

RK 16 A, RK 16 C

RK 49, DN 15 – 65 mm

Ø D

Ø D

Ø D

L

L

L

RK 49, DN 80 – 200 mm

Non-Return Valves RK – PN 40 to PN 160 Short overall length according to DIN EN 558-2, table 11, series 52(=̂ DIN 3202, part 3, series K5)

Body Material


RK 16A Body 15 – 100 mm 1.4571 AISI 316 Ti


RK 16C Body 15 – 100 mm 2.4610 Hastelloy C

Valve disk 2.4610 Hastelloy C

RK 49 Body 15 – 65 mm 1.4581 A351 CF8

Valve disk 1.4986 –

Body 80 – 200 mm 1.7357 A217 WC6

Plug 1.4922 –


Application

Dimensions

Type PN

For liquids, gases, vapours. Application as check valve,

RK 16 A 40/class 300 breather, foot valve, pressure-relief valve or pressure-

RK 16 C 40/class 300 maintaining valve.

RK 49 160 RK 16 A and RK 16 C for aggressive fluids and lowtemperaturesRK 49 for high pressures and temperatures

DN [mm] 15 20 25 32 40 50 65 80 100 125 150 200

[in] 1/2 3/4 1 11/4 11/2 2 21/2 3 4 5 6 8

L [mm] 25 31.5 35.5 40 45 56 63 71 80 110 125 160

RK 16 A D [mm] 52 63 72 81 93 108 128 1431631)

– – –1692)

RK 16 C D [mm] 52 63 72 81 93 108 128 1431631)

– – –1692)

RK 49 D [mm] 54 63 74 84 95 110 130 147 173 209 245 301

1) PN 10/162) PN 25/40

Designs

Type Seat Springmetal- EPDM FPM PTFE without special Nimonic-

to-metal (–40 up to (–25 up to (–190 up to spring spring spring2)150°C)1) 200°C)1) 250°C)1)

RK 16A X O O O O O O O

RK 16C X – – – O – – O

RK 49 X – – – O – X O

1) Observe pressure/temp. ratings of the equipment2) Required for temperatures above 300 °C.3) Earthing connection for DN 25 – 100 as standard.

DN 125 – 200 on request at extra cost.

Earthingconnection3)


Type PN Nominal sizes DN PMA / TMA / [bar] / [°C]

RK 16 A 40/Class 300 15 – 100 49.6 / -200 35.8 / 200 24 / 550

RK 16 C 40/Class 300 15 – 100 49.6 / -200 35.8 / 200 29.3 / 400

RK 49 160 15 – 65 160 / -10 136.5 / 200 110.8 / 550

80 – 200 160 / -10 160 / 200 55.3 / 530

X : standardO : optional– : not available

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➞ ➞ ➞

➞

RK 49

Non-Return Valves RK – PN 40 to PN 160 Short overall length according to DIN EN 558-2, table 11, series 52 (=̂ DIN 3202, part 3, series K5)

➞ ➞ ➞

➞Differential pressures at zero volume flow.

Opening Pressures

Opening Pressures

RK 16 C

Pressure Drop ChartsThe curves given in the chart are valid forwater at 20 °C. To read the pressure drop forother fluids the equivalent water volume flo-wrate must be calculated and used in thegraph.

The values indicated in the chart are applica-ble to spring-loaded valves with horizontalflow. With vertical flow insignificant deviationsoccur only within the range of partial opening.

V·W = V· ·




ρ1000

DN Opening pressures [mbar]Direction of flow

without with springspring

15 2.5 25 22.5 20

20 2.5 25 22.5 20

25 2.5 25 22.5 20

32 3.5 27 23.5 20

40 4.0 28 24.0 20

50 4.5 29 24.5 20

65 5.0 30 25.0 20

80 5.5 31 25.5 20

100 6.5 33 26.5 20

➞ ➞ ➞

➞


Opening Pressures

RK 16 ADN Opening pressures [mbar]


15 2.5 25 22.5 5

20 2.5 25 22.5 5

25 2.5 25 22.5 5

32 3.5 27 23.5 5

40 4.0 28 24.0 5

50 4.5 29 24.5 5

65 5.0 30 25.0 5

80 5.5 31 25.5 5

100 6.5 33 26.5 5




15 16.5 73 56.5 40

20 17.5 74 57.0 40

25 18.0 76 58.0 40

32 18.0 76 58.0 40

40 19.5 79 59.5 40

50 22.0 84 62.0 40

65 23.0 87 63.0 40

80 17.5 75 57.5 40

100 20.0 80 60.0 40

125 23.0 86 63.0 40

150 24.0 88 64.0 40

200 29.0 98 69.0 40

RK 16 A, RK 16 C (dash lines apply to RK 16 A)


RK 49When selecting valve please consider:Partial opening = Full opening =instable range stable range

(RK 16C)

Vol

ume

flow

V· W

Pressure drop p

∇

Vol

ume

flow

V· W

Pressure drop p

∇

38

DISCOCHECK Dual-Plate Check Valves BB DIN design DN 501) – 1200 mm, PN 6 – 1602)Short overall length according to DIN EN 558-1, table 11, series 16 (=̂ DIN 3202, part 3, series K3)

Materials


L

A

Ø D

Ø D

80°

80°

L

A

DN 50 – 125 mm

DN 150 – 1200 mm

Design Part designationNominal size EN ASTM 4)

DN reference equivalent

Grey cast iron Body 150 – 1200 EN-JL 1040 A 126 Class A(BB ... G) Dual plate 150 – 1200 EN-JS 1030 A 536 60-40-18

Carbon steel Body 100 + 125 1.0460 A 105(BB ... C) Body ab 150 1.0619 A 216 WCB

Dual plate 100 + 125 1.4006 A 182 F6

Dual plate ab 150 1.0619 A 216 WCB

Stainless steel Body 50 – 125 1.4404 A 182 F 316 L(BB ... A) Body ab 150 1.4408 A 351 CF 8 M

Dual plate 50 – 125 1.4404 A 182 F 316 L

Dual plate ab 150 1.4408 A 351 CF 8 M

4) Physical and chemical properties comply with EN grade.

Max. service pressure [bar]Design Type PN at temperature [°C]5)

20 100 150 200 250 300 350 400 450 500 550

BB 11 G / 21 G 6 6 6 5.4 4.8 4.2 3.6 – – – – –

12 G / 22 G 10 10 10 9.0 8.0 7.0 6.0 – – – – –

14 G / 24 G 16 16 16 14.4 12.8 11.2 9.6 – – – – –

BB 12 C / 22 C 10 10 10 10 9.6 8.9 7.6 7.1 6.7 6.4 – –

14 C / 24 C 16 16 16 16 15.3 14.2 12.1 11.4 10.7 10.3 – –

15 C / 25 C 25 25 25 25 23.9 22.2 18.9 17.8 16.7 16.1 – –

16 C / 26 C 40 40 40 40 38.2 35.6 30.2 28.4 26.7 25.8 – –

17 C 63 63 58.5 54.6 47.6 44.8 40.6 37.8 36.4 – – –

18 C 100 100 93.3 86.7 75.6 71.1 64.4 60 57.8 – – –

19 C 160 160 149.3 138.7 121 113.8 103 96 92.5 – – –

BB 12 A / 22 A 10 10 9.8 9.1 8.5 8.1 7.8 7.5 7.3 7.2 7 6.9

14 A / 24 A 16 16 15.6 14.6 13.7 13 12.4 12 11.7 11.4 11.2 11.1

15 A / 25 A 25 25 24.4 22.8 21.3 20.3 19.4 18.8 18.2 17.9 17.6 17.3

16 A / 26 A 40 40 39.1 36.4 34.1 32.5 31.1 30 29.2 28.6 28.1 27.7

17 A 63 63 61.6 57.4 53.8 51.2 49 47.3 45.9 45.1 44.2 43.7

18 A 100 100 93.3 86.7 82.2 77.8 74.2 71.6 69.3 67.6 66.2 63.1

19 A 160 160 149.3 138.7 131.5 124.5 118.7 114.6 110.9 108.2 105.9 101.0

5) For temperatures above +300 °C special springs of Inconel X 750 are required.

BB 12A-18A DN 50 – 125 applicable up to max. 500 °C.

For liquids, gases, vapours. In heating, air-conditioning, water-supply and coolinginstallations, steam and condensate systems, oil pipelines and natural gas lines. For use with sea water, in sewage works, downstream of fans and compressors. For drinking water with Levasint3) lining, and for sea water with rubber lining. With adjustable dampers for installations with waterhammer problems. Metal-to-metal or soft seat (EPDM, FPM).

1) DN 50, 65 and 80 only available as BB . . . „A“ (stainless steel).2) If PN > 40 and DN > 500 mm please ask for corresponding data sheets.3) LEVASINT® is a product of BAYER AG, Leverkusen.

Application

Stainless steeldown to –10 5 °Cat nominal pressure

Grey cast irondown to –10 °Cat nominal pressure

Carbon steeldown to –10 °Cat nominal pressure

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DISCOCHECK Dual-Plate Check Valves BB DIN design DN 50 – 1200 mm, PN 6 – 1601)

Pressure Drop ChartThe chart is valid for water at 20 °C; for other fluids, the equivalent watervolume flowrate must be calculated andused in the chart.

The values indicated in the chart areapplicable to valves with 7 mbar springswith horizontal flow. With vertical flowdeviations occur only within the range ofpartial opening.

The dashed lines in the chart are validfor valves with 2 mbar springs withhorizontal flow.

The chart and the flow characteristicsapply to values up to PN 40. For valveswith higher pressure ratings (PN) theloss coefficients (zeta values) and thepressure drops are increased byapprox. 20 %. The kvs values arecorrespondingly reduced.

V·W = V· ·



V· = Volume flow of fluid(operating condition) in [l/s] or [m3/h]

ρ1000

1) If PN > 40 and DN > 500 mm ask for corresponding data sheets.

BB Designs

Type Seat Liningmetal- EPDM FPM NBR PTFE2) LEVASINT® 4) Rubber5)

to-metal (–40 up to (–25 up to (–30 up to (–25 up to150°C)1) 200°C)1) 110°C)1) 200°C)1)

BB.....G O X O O – O O

BB.....C X O O O O3) O6) O6)

BB.....G X O O O O3) – –

1) Observe pressure / temp. ratings of equipment2) Cover FPM ring with PTFE3) From DN 150. Not possible for smaller sizes.4) Inside and outside of body lined with LEVASINT®, seat made of EPDM. Internals either of bronze or

of stainless steel. Temp. range –10 °C up to 70 °C. LEVASINT is a product of Bayer AG, Leverkusen.5) Inside of body lined with rubber, seat made of EPDM. Internals either of bronze or of stainless steel.

Temp. range –10 °C up to 90 °C.6) From DN 150. For smaller sizes use DN “BB...A”

Type Damper7) Earthing Drain without Springsconnection plug spring Inconel spring8) 2 WA10) 7 WA11) 5 VO12)

BB.....G O – O O – O X O

BB.....C O O O9) O O O X O

BB.....A – O O9) O O O X O

7) From DN 200 up to DN 800.Max. temperature rating 110 °C, see page 41.

8) Inconel X 750 (Required for temperatures above 300 °C). Opening pressure 7 mbar (spring 7 WAI).9) From DN 15010) Spring for 2 mbar opening pressure with horizontal installation.11) Spring for 7 mbar opening pressure (standard) with horizontal installation.12) Spring for 5 mbar opening pressure with vertical installation and downward flow.


Opening Pressures


with upward flowwithout with springspring 7 WA

7 WAI 2 WA 5 VO

50 6 13 8 17

65 6 13 8 17

80 7 14 9 19

100 7 14 9 19

125 10 17 12 25

150 11 (15) 18 (22) 13 (17) 27 (35)

200 12 (18) 19 (25) 14 (20) 29 (41)

250 14 (18) 21 (25) 16 (20) 33 (41)

300 15 (25) 22 (32) 17 (27) 35 (55)

350 17 (25) 24 (32) 19 (27) 39 (55)

400 19 (25) 26 (32) 21 (27) 43 (55)

450 22 29 24 49

500 23 (28) 30 (35) 25 (30) 51 (61)

Values indicated in brackets apply for BB17/18/19.

X : standard O : optional – : not available

X : standard O : optional – : not available

40


Dimensions and Weights Type Code

Valve Type

Series

1 – DN 50 – 125 mm and from DN 450 mm as well as from PN 632 – DN 150 – 400 mm up to PN 40

Pressure rating

1 – PN 6 (only grey cast iron)2 – PN 104 – PN 165 – PN 256 – PN 40

Body material

G – Grey cast ironC – SteelA – Austenitic steel

Nominal sizeDN 50 – 1200

Seat

HD – metal-to-metalEPDMFPMPTFE

Springs/Opening pressures

7 WA – Spring for 7 mbar withhorizontal installation7 WAI – Inconel spring for 7 mbar with horizontal installation2 WA – Spring for 2 mbar with horizontal installation5 VO – Spring for 5 mbar with downward flow

Typical example: BB 24 C 150 FPM 7 WAExplanatory note: Dual-plate check valve

BB 24, PN 16, made ofcast steel type GS-C 25,DN 150 mm with FPM gasket and spring (7 mbar) for horizontal installation.

BB

2

4

C

150

FPM

7 WA

1) If PN > 40 and DN > 500 mm ask for corresponding data sheets.2) Weights rated for cast steel grade GP 240 GH (GS-C 25).3) DN 50, 65 and 80 only available as BB . . . “A” (stainless steel).

DN PN Dimensions [mm] WeightD L A [kg]2)

6 319 33

10 330 35

250 16 330 114 87 35

25 343 38

40 355 41

6 375 44

10 380 45

300 16 386 114 110 47

25 403 51

40 420 55

6 425 62,5

10 440 67

350 16 446 127 120 69

25 460 73

40 477 79

6 475 ,80,5

10 491 86

400 16 498 140 142 88

25 517 95

40 549 107

6 530 125

10 541 130450 16 558 152 163 138

40 574 143

6 580 144

10 596 152

500 16 620 152 181 164

25 627 168

40 631 170

DN PN Dimensions [mm] WeightD L A [kg]2)

10 109 2.5

16 109 2.5503) 25 109 43 8 2.5

40 109 2.5

10 129 4

16 129 4653) 25 129 46 11 4

40 129 4

10 144 6

16 144 6803) 25 144 64 12 6

40 144 6

10 164 7

16 164 7100 25 171 64 19 7.5

40 171 7.5

10 194 12

16 194 12125 25 196 70 28 12

40 196 12

6 209 12

10 220 13.5

150 16 220 76 40 13.5

25 226 14

40 226 14

6 264 18.5

10 275 20

200 16 275 89 64 20

25 286 22

40 293 23

A2

41


Bei Druckstoßproblemen BB mit patentierter Schließdämpfung in

DN 200 bis 800.

Design with LEVASINT® lining2): for drinking water. Design with rubber lining: for sea water.Design with dampers: to solve waterhammer problems. Metal-to-metal or elastic seat(EPDM, FPM)

1) For pressure ratings > PN 40 and sizes > DN 500 please ask for corresponding datasheets.

2) LEVASINT® is a product of BAYER AG, Leverkusen.

Application

BB with patented adjustable dampers, DN 200 – 800.

BB with Lining

To solve waterhammer problems in pipelines carrying liquids.To evaluate possible waterhammer problems please ask for our questionnaire.

Application

BB with Dampers

BB with lining from DN 150

Temperature Limits

LEVASINT® lining –10°C up to 70°C

Rubber lining –10°C up to 90°C


Size DN[mm] 200 250 300 350 400 500 600 700 800

[inch] 8 10 12 14 16 20 24 28 32

Max. service pressure [bar] 16 16 13 9 13 9 5 8 6

Max. service temperature [°C] 110

Max. admissible pressure atline leading to the valve(pump switched off) [bar] 0.5

Hard-rubber Levasint ®

lining lining

Dual plates, hinge pins and springs are not lined. Dual plates standard with O-rings of EPDM or on requestwith metal seating surface.

42

DISCO Swing Check Valves CBDN 50 – 300 mm, PN 6 – 40

42

a

L

∅D

∅D

d

70°

L

CB 24 S, CB 26, CB 26 ADN 50 – 300 mm

CB 14, DN 50 – 200 mm

CB 14, DN 250 – 300 mm

60°

d

a

∅D

L

Application

Material

Weights and Dimensions


Type Part designationNominal sizes EN ASTM1)

DN reference equivalent

CB 14 Body 50 – 300 mm1.0038 A 284 B

galvanized galvanized

Flap 50 – 300 mm NBR NBR

CB 24 S Body50 – 100 mm Bronze (CC 483K-GS) B 505 C 90 700

125 – 300 mm Bronze (CC 332G) B 148 Alloy 952

Flap 50 – 300 mm Bronze (CC 332G) B 148 Alloy 952

CB 26

Body50 – 200 mm 1.0460 A 105

250 – 300 mm 1.0038 A 284 B

50 – 80 mm 1.4581 A 351 CF 8 MC

Flap 100 – 300 GGG-40.3 (EN-JS 1025) –

CB 26 ABody

50 – 200 mm 1.4571 AISI 316 TI

250 – 300 mm 1.4581 A 351 CF 8 MCFlap 50 – 300 mm 1.4581 A 351 CF 8 MC

1) Physical and chemical properties comply with EN grade.

Nominal size Dimensions [mm] Weight [kg]DN CB 14 CB 24 S, CB 26, CB 26 A

CB14 CB24SCB26

[mm] [in] D L a d6) D L a d6) CB26A

50 2 98 14 45 47 98 17 40 50 0.7 0.9 0.9

65 21/2 118 14 60 64 118 20 50 64 1.0 1.4 1.4

80 3 132 14 70 75 132 24 58 75 1.4 2.0 2.0

100 4 154 14 90 98 154 27 72 99 1.5 3.1 3.1

125 5 184 16 115 124 184 32 88 125 2.5 5.2 5.3

150 6 209 16 145 148 209 32 112 144 3.3 6.7 6.9

200 8 264 18 185 196 264 42 150 198 5.5 13.7 14.1

250 10 319 35 220 242 319 47 182 244 11.2 22.9 23.6

300 12 375 43 270 288 375 52 216 292 14.0 32.8 33.86) Minimum flange bore and inside pipe diameter.

Type Nominal sizes DN PN PMA / TMA / [bar] / [°C]

CB 14 50 – 300 16 16 / -10 6 / 60 4 / 80

CB 24 S 50 – 300 16 16 / -200 16 / 90 2)13 / 2502)

CB 26 50 – 200 40 40 / -10 30 / 200 20 / 350

250 – 300 40 40 / -10 27 / 200 21 / 300

CB 26 A 50 – 300 40 40 / -10 32 / 200 26 / 4502) Max. pressure/temperature rating for CB 24 S without springs.

Type PN For liquids, gases, vapours

CB 14 16 CB 14 for water and compressed air

CB 24 S 16 CB 24 S for sea water, drinking water, swimming-pool water

CB 26 40 For low temperatures

CB 26 A 40 CB 26 A for aggressive fluids, drinking water, or swimming-pool water

CB DesignsType Seat Springs

metal- NBR EPDM FPM PTFE4) without specialto-metal (–30 up to (–40 up to (–25 up to (–25 up to spring spring

110°C)3) 150°C)3) 200°C)3) 200°C)3)

CB 14 – X5) – – – X –CB 24S O X O O – O –CB 26 O – X O O O –CB 26A O – X O O O –3) Observe pressure / temp. ratings of the equipment 4) Cover FPM ring with PTFE5) Flap made from NBR (Perbunan) Temp. range: –10 °C up to 80 °C

X : standardO : optional– : not available

A2

43

DISCO Swing Check Valves CBDN 50 – 300 mm, PN 6 – 40

Pressure Drop Charts

V·W = V· ·




ρ1000

The curves given in the chart are validfor water at 20 °C. To read the pressuredrop for other fluids the equivalentwater volume flowrate must becalculated and used in the graph.

The values indicated in the chart areapplicable to valves with horizontal flow.With vertical flow insignificant deviationsoccur only within the range of partialopenings.


Opening Pressures

➞ ➞ ➞

➞

➞ ➞

➞

CB 14

CB 24 S, CB 26, CB 26 A

Type DN Opening pressures [mm] [mbar]

Direction of flow

CB 14 50 – 150 8 0 1)200 – 300 15 0

Type DN Opening pressures [mm] [mbar]

Direction of flowwith- with springout

spring

CB 24 S 50 – 150 5 12 7

200 – 300 8 15 7

CB 26/ 50 – 80 5 12 7 1)

CB 26 A 100 – 150 11 18 7

200 – 300 18 25 7

1) Valves should not be used for down-ward flow applications, since the springwill not close the valve flap.

44

Swing Check Valves WB without spring, DN 50 – 300 mm, PN 10/16

WB 26, WB 26A, WB 24 SDN 50 – 300 mm

Ø D

Ø d

o

a

L

WB Design

Type Seat Springmetal-to- NBR EPDM FPM PTFE without special

metal (–30 up to (–40 up to (–25 up to (–25 up to spring spring110°C)4) 150°C)4) 200°C)4) 200°C)4)

WB 24S O X O – X –

WB 26 O X O X –

WB 26A O X O X –

4) Observe pressure/temp. ratingsX : standardO : optional– : not available

UseCB 26

UseCB 26

UseCB 26A

UseCB 26A

UseCB 26

Materials


Application

WB 26 for liquids, gases and vapours

WB 26 A for aggressive fluids

WB 24 S for sea water

Installation in horizontal or vertical lines with upward flow.

Nominal pressure PN 16

Design with O-rings2) NBR

Max. service pressure [bar] 16

Related temperature [°C] 110

Min. temperature3) [°C] –10

2) O-rings in flap and valve faces made of NBR as standard.3) Minimum temperature for nominal pressure rating.

Type ASTM reference EN 1) equivalent

WB 26Body and flap AISI 420 1.4034

galvanized galvanized

WB 26 ABody AISI 316 1.4401

Flap A 351 CF 8M 1.4408

WB 24 S Body and flap Aluminium bronze Aluminium bronze

O-rings NBR as standard

1) Physical and chemical properties comply with ASTM grade.

Weights and Dimensions

Nominal size DN Dimensions [mm] Weight5)[mm] [in] L ∅ D a ∅ do [kg]

50 2 14 109 35 32 0.95

65 21/2 14 129 48 40 1.2

80 3 14 144 60 54 1.6

100 4 18 164 78 70 2.5

125 5 18 195 98 92 3.5

150 6 20 220 116.5 112 4.7

200 8 22 275 160 154 7.6

250 10 26 330 200 200 13.2

300 12 32 380 235 240 20.5

5) The weight ratings apply for WB 26 and WB 26 A. WB 24 S reduced by approx. 5 %.

A2

45

Swing Check Valves WB without spring, DN 50 – 300 mm, PN 10/16

Pressure Drop ChartThe curves given in the chart are valid for water at 20 °C. To read the pressure drop for other fluids the equivalent watervolume flowrate must be calculated and used in the graph.

The values indicated in the chart are applicable to valves withhorizontal flow. With vertical flow insignificant deviations occuronly within the range of partial openings.

V·W = V· ·




ρ1000

Opening PressuresOpening pressure zero when valve isinstalled in horizontal line.

46

NAF-Check ValvesDN 40 – 1000 mm, PN 10 – 100

for liquids, gases, vapours, aggressive fluids andlow temperatures.

Application

Materials


Weight and Dimensions

NAF-CheckDN 40 – 1000 mm

∅D

L

A

Design Part Nominal size ASME / SS ENdesignation DN [mm] equivalent

40 + 50 SS 2343 1.4436

Body 65 – 250 ASTM A 351 CF 8M 1.4408

Steel 300 – 1000 ASTM A 216 WCC 1.0619

Disc40 + 50 SS 2395 1.4439

65 – 1000 SS 2387 1.4317

Stainless Body40 + 50 SS 2343 1.4436

steel 65 – 1000 ASTM A 351 CF 8M 1.4408

Disc 40 – 1000 SS 2324 1.4470

High-tempe- Body 65 – 400 ASTM A 217 WC 6 1.7557rature steel Disc 65 – 400 ASTM A 217 WC 6 1.7557

Type PN DN Dimensions [mm] Weight[mm] D L A [kg]

40 84 33 15 1.2

50 92 43 5 1.7

65 108 46 12 1.7

80 128 64 16 3526 620 / 30

10 – 40 100 158 64 26 5528 620 / 30

125 180 70 36 7

150 203 76 51 9

200 263 89 71 16

250 315 114 90 28

300 370 114 125 41

350 432 127 146 48

400 480 140 175 65

526 520 / 30450 530 152 188 94

528 520 / 3010 – 25 500 592 152 228 115

600 692 178 282 192

700 804 229 301 270

800 911 241 374 402

1000 1124 300 458 782

65 125 46 12 3

80 138 64 16 4

100 158 64 26 5

125 188 70 39 9

526 822 / 32 40 – 100150 222 76 52 11

200 275 89 73 23

250 335 114 93 45

300 394 114 131 57

350 435 127 151 75

4004) 490 140 177 98

4) DN 400 mm only for PN 40/63.

Design Type PN DN [mm]Max. service pressure [bar] / related temperatures [°C]3)

20 100 150 200 250 300 350 400 450 500 525

Steel down to 526 620 / 30 40 40 – 250 40 40 40 38 36 32 25 18 11 – –

–10 °C at nominal pressure 526 520 / 30 25 300 – 1000 25 25 25 24 22 20 15 11 6 – –

Stainless steel down to 528 620 / 30 40 40 – 250 40 33 31 29 28 26 26 – – – –

–40 °C at nominal pressure 528 520 /30 25 300 – 1000 25 20 19 18 17 16 16 – – – –

High-temperature steel down to –10 °C at 526 822 / 32 100 65 – 400 100 100 100 100 100 100 100 97 85 54 37nominal pressure

3) Max. service temperature for valve with spring + 300 °C.

A2

47

NAF-Check ValvesDN 40 – 1000 mm, PN 10 – 100

Pressure Drop Chart

V·W = V· ·




ρ1000

The curves given in the chart are valid for water at 20 °C. To read the pressure drop for other fluids the equivalent watervolume flowrate must be calculated and used in the graph.The values indicated in the chart are applicable to valves withhorizontal flow. With vertical flow insignificant deviations occuronly within the range of partial openings.

The chart and flow characteristics are available up to andincluding PN 40. Higher PN increase the zeta values andpressure drops at the same flowrates by approx. 20 %. The kvs values decrease accordingly.

48

The Power of Quality

GESTRA-DISCOCHECK Dual-Plate Check Valves and DISCO Swing Check Valves

No early wear on hinge pins orspringsDual-plate check valves BB featuretwo hinge pins and four closingsprings for lower opening pressures.

Seat not subject to wear or damageDuring the opening process the hingeside of the plates opens first, therebyeliminating wear of the seatingsurfaces (soft or metal-to-metal seat)and extending the service life of thedual-plate check valves BB.

A positive safeguard against waterhammerDual-plate check valves BB areavailable with patented adjustabledampers to protect the installationagainst damage caused bywaterhammer.

GESTRA's extensivecustomer adaptation anduncompromising qualitystandards guaranteeoutstanding productreliability coupled witheconomic efficiency andincreased plant safety.

Leakproof bodyThe body of the dual-plate checkvalve has no external through-hole,hence no need for unnecessary platereplacements due to a leaky valvebody.

Suitable for use in aggressive fluidsThe dual-plate check valves BB areavailable with Levasint® or hard-rubber lining for application inseawater and corrosive fluids.

Tbilisijska 57, 1111 LjubljanaTelefon: +386(0) 1 4232-415

+386(0) 1 4232-742 Telefaks: +386(0) 1 4234-761

E- mail: [email protected]://www.trimad.si

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