No, because you have a constant
upstream psi value.
Quote:
Originally Posted by Richard L
If the pressure drop is small than 20psi, the valve should close by definition?
I am be able to explain why you think this is the case. If you have any open ended checkvalve, you will not see any pressure at all.
Mass flow generates pressure = keeps the valve open - agreed 100%.
But if you have a restriction downstream (water jet), the flow will no longer able to keep the valve open, 20psi differential remains true.
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