Check valve opening pressure issue
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As shown in the diagram, the check valve has a rating of 25 kilograms, and the medium flowing through the pipeline is gas. What is the minimum gas pressure required to overcome the force of the check valve? Please help, experts
This depends on the opening and closing pressure of the valve itself, and has nothing to do with PN25. PN25 is the pressure that the valve body can withstand.
If no requirements are specified for procurement, then the manufacturer will provide the standard version; the opening force of a standard one-way valve depends on its own weight, the direction of installation, and the back pressure.
Hehe, if you’re interested, please remove the valve core and weigh it, then measure its effective sealing area – that should give you the answer you’re looking for: lol
Just this check valve in the diagram. In fact, various valves should be chosen one of two. 1 The valve company provides the pressure resistance before and after the valve. 2 The pressure resistance required of the valves by the purchaser
I’ve been thinking about this issue as well: a 150-size swing valve keeps making noises and humming, and I’m worried that one day the valve core might fall out.
A lift-type check valve opens when the force exerted by the medium is greater than the weight of the valve disc and sufficient to overcome friction
It is necessary to know the pressure required to overcome the twisting spring force inside the check valve as well as the outlet pressure. It’s best to consult the valve factory~~~
It is necessary to know the weight of the valve disc and the force application area