Product name：Check Valve
Product Description
Check valves are valves that rely on the flow of the medium itself and automatically open and close the valve flaps to prevent the backflow of the medium, also known as check valves, one-way valves, backflow valves, and backpressure valves.
Check valve belongs to a kind of automatic valve, its main role is to prevent the backflow of the medium, to prevent the pump and drive motor reversal, as well as the release of the container medium. Check valves can also be used to recharge auxiliary systems where the pressure may rise above the system pressure.
Application range
1、Design and manufacture: cast steel check valves according to BS 1868, ASMEB16.34, API6D; forged steel check valves according to API602
2、Acceptance and inspection: API 598, API 600 or API 6D
3、Flange connection size:ASMEB16.5(for NPSE24)
ASME B16.47 Series B, API 605
ASME B16.47A series, MSS SP-44(for NPS>24)
4、Butt weld end:ASME B16.25
5、Socket weld end:ASMEB16.11
6、Structural length: ASME B16.10
7、Temperature and pressure rating:ASME B16.34
8、Wall thickness standard: API 600, BS 1868