How To Choose A Good Slow Closing Check Valve

Mar 22, 2021

The opening and closing parts of the slow-closing check valve are automatically opened or closed by the flow and force of the medium. It is a valve to prevent the medium from flowing back. Its main materials are: carbon steel, low temperature steel, dual-phase steel (F51/F53), titanium alloy, aluminum bronze, INCONEL625, SS304, SS304L, SS316, SS316L; chromium molybdenum steel, Monel ( 400/500), 20# alloy, Hastelloy and other metal materials. So in addition to some material requirements, what are the key points for the design and selection of slow-closing check valves?

check valve

1. Design and manufacturing: API594, API6D, JB/T8937

2. Structure length: API594, API6D, DIN3202, JB/T8937

3. Pressure-temperature grade: SNSIB16.34, DIN2401, GB/T9124, HG20604, HG20625, SH3406, JB/T74

4. Test and inspection: API598, JB/T9092

5. Piping flange: JB/T74~90, GB/T9112!9124, HG20592~20635, SH3406, ANSIB16.5, DIN2543~2548, GB/T13402, API605, ASMEB16.47

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How To Choose A Good Slow Closing Check Valve

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