DK941X WCB double flanged steam control vacuum butterfly valve
DK941X WCB double flanged steam control vacuum butterfly valve

DK941X WCB double flanged steam control vacuum butterfly valve

Model
DK941X/DK941F

Item specifics

Nominal Pressure
0.25MPa
Shell Test Pressure
0.4MPa
Seal Test Pressure
0.275MPa
Vacuum Leakage
≤6.67*10-2PaM3S-1
Sealing
EPDM

Review

Description

Features And Standard
Material And Test Pressure
Dimension

Vacuum butterfly valve is applied in non-corrosive saturated steam low vacuum pipeline as a closed-circuit equipment. This series valve are sealed butterfly valve, the two shaft ends adopts 0.25MPa water sealing, to ensure no leakage at shaft ends. DK941x-2.5C/ DK941F-2.5C structure is two valve seats type, the distance between valves seats and shaft ends is sealed by rubber sealing combined with water sealing (Pressure is 0.25MPa)


Standard:

1 Design and manufacture: JB/T8527-97, GB/T12238-89

2 Face to face: GB12221-89

3 Flange connection: GB/T17241.6-98

4 Test: GB/T13927-92


Material and Range of application

Name

Material

Body, disc

Q235-A, F steel,WCB

Shaft, Seat

2Cr13, 1Cr18Ni9Ti

Disc sealing surface

EPDM, NBR

Suitable Medium

Non-corrosive saturated steam

Suitable Temperature

≤120℃

Vacuum Leakage

≤6.67×10-2PaM3S-1



Test

Nominal Pressure

0.25MPa

Test Pressure

Shell

0.4MPa

Seal

0.275MPa


DN

PN

L

D

D1

D2

n-Φd

b

f

A

B

H

1000

 

 

 

 

 

0.25MPa

305

1175

1120

1078

28-30

42

5

590

980

2230

1200

381

1375

1320

1280

32-30

44

5

590

980

2476

1400

381

1575

1520

1480

36-30

46

5

630

1117

2793

1600

457

1790

1730

1690

40-30

48

5

630

1117

2850

1800

457

1990

1930

1690

44-30

50

5

850

1480

3187

2000

540

2190

2130

2090

48-30

52

5

850

1480

3310

2200

590

2405

2345

2295

52-33

56

6

850

1554

3915

2400

650

2605

2540

2495

56-33

60

6

850

1554

4187

2600

700

2605

2740

2695

60-33

64

6

1533

1435

4409

2800

760

3030

2960

2910

64-36

66

6

1585

1837

4760

3000

810

3230

3160

3110

68-36

70

6

1585

1837

5008


 


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