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TYpe

Design and production

Length of structure

Flange size

Pressure-Temperature

Experiment-test

Swing Check Valve

GB12236

Gb12221

GB/T9113
ANSI B16.5

Gb9131

JB/T9092

Lift Check Valve

GB12235

Nominal pressure

1.6

2.5

4.0

6.4

10.0

16.0

Strength test

2.4

3.8

6.0

9.6

15.0

24.0

Water Seal Test

1.6

2.5

4.0

6.4

10.0

16.0

Gas seal test

0.4-0.7

Body

Guide sleeve

Pin

spacer

sealing surface

Operating temperature ℃

Medium

WCB

WCB

1Cr13

Reinforced Flexible Graphite 
1Cr13/ Flexible Graphite 
Stainless Steel /acidproof Asbestos 
PTFE
spacer

13Cr
STL
body material 
With Body Material
PTFE
Nylon Nylon

≤425

water Steam oil

WC6

WC6

≤540

WC9

WC9

≤570

ZGCr5Mo

ZGCr5Mo

≤550

ZG1Cr18Ni9Ti

ZG1Cr18Ni9Ti

1Cr18Ni9Ti

≤200

Nitric acid

ZG1Cr18Ni12Mo2Ti

ZG1Cr18Ni12Mo2Ti

1Cr18Ni12Mo2Ti

≤200

acetic acid