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Check valve

Reference Standard CB/T3944 Flanged Stainless Steel Check Valve This standard is applicable to the piping system of liquefied gas carriers, bulk chemical tankers and ships with nominal pressure not higher than 2.5MPa and design temperature not lower than -165℃ Design, manufacture and acceptance of return valves. The check valve of the pipeline system of other ship's corrosive medium can be adopted by reference.
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Check valve
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Reference Standard CB/T3944 Flanged Stainless Steel Check Valve
This standard is applicable to the design, manufacture and acceptance of check valves for piping systems of liquefied gas carriers, bulk chemical tankers and ships with nominal pressure not higher than 2.5MPa and design temperature not lower than -165℃. The check valve of the pipeline system of other ship's corrosive medium can be adopted by reference.

 

Type
The types of check valves are specified as follows:
Type A - straight-through check valve with flange connection size and sealing surface according to GB/T 569-1965;
Type B - straight-through check valve with flange connection size and sealing surface according to GB/T 569-1965;
AS type - straight-through check valve with flange connection size and sealing surface according to GB/T 2501-1989;
BS type - straight-through check valve with flange connection size and sealing surface according to GB/T 2501-1989;

 

Basic parameters of check valve

Type Nominal pressure PN MPa Operating temperature ℃ Nominal diameter DN   mm
≤20 100 150 200 250 300 350
Maximum allowable working pressure P MPa
P2 P10 P15 P20 P25 P30 P35
A、B 1.0  0.95 0.86 0.81 0.76 0.71 0.66 0.36 65~125
2.5 2.38 2.15 2.01 1.89 1.77 1.66 1.59 20~100
AS、BS 1.6 1.52 1.31 1.29 1.21 1.13 1.06 1.01 100~125
2.5 2.38 2.15 2.01 1.89 1.77 1.66 1.59 20~100
We could not find any corresponding parameters, please add them to the properties table
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