Type

Desing And Manutacture 

Face to face End to end

Flange Dimension 

Pressure Temperature Lating

Inspection and test 

Swing check valve

ANSI B16.34

ANSI B16.10

ANSI B16.15

ANSI B16.34

API 598

Lift check valve 

BSI 868

Nominal Pressure 

150

300

600

900

Shell test

MPa

3.1

7.8

1513

23.1

Lbf/in2

450

1125

2225

3350

Water seal test 

MPa

2.2

5.6

11.2

16.8

Lbf/in2

315

815

1630

2440

Air seal tst

MPa

0.5～0.7

Lbf/in2

60～100

Body Cover Disk hingeside way bush 

Hinge pin 

Sealing shim

Sealing Face

Working temperature

Suitable medium 

WCB

2Cr13

Enhanced flexible graphite 
1Cr13/Flexible Graphite
S.S/Acie-proof asbestos Tooth profile gasket

13Cr 
STL
With bodymater rial
PTFE 
Nylon

≤425

Water Steam Oil Nitric acid Acetic acid Urea 

WC1

≤450

WC6

≤540

WC9

≤570

C5 C12

≤550

CF8

304

≤600

CF3

316

CF8M

304L

CF3M

316L