What type of check valve is suitable for exhaust pipes under several thousand pascals?
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With a tailpipe pressure of a few thousand pascals, which type of check valve would be suitable? The main consideration is that the check valve can open and close properly with minimal pressure drop.
Swing check valves and axial flow check valves have low pipeline resistance, making them suitable choices.
It seems that a bladed type similar to that of an exhaust fan would be appropriate.
Thousands of pascals; even one atmosphere is over 100 thousand pascals, so it’s impossible to open the valve disc
Gravity-type check valve – I don’t know what the pipe diameter is
What exhaust? If a water seal is suitable, it’s better to choose a water seal.
Ultra-low pressure check valves designed for gases – ordinary metal check valves, no matter how light their valve discs may be, still have a pressure level that exceeds that of the medium flowing through them, making it impossible to push them open. It seems that there aren’t many manufacturers in China capable of producing such valves
Which domestic manufacturers can produce such ultra-low pressure check valves?
Sorry! I’m not sure about this either; I’ve never used it