Thanks for the responses. Yes this is a real scenario. Lately I seen an employee get water squirting out of the diaphragm from an near hose because of not following the "recommended" way for closing the system. I heard from people here when I started to push the water along to the vent or back...
Sorry I will expand on my original question. Imagine 3 Diaphragm valves in series. The outside 2 are closed, then the center valve is closed. This would put pressure on the other two valves as the water tries to compress but does not.
Is this how it works? Is there a name for this "fault"...
I am wondering if closing the diaphragm valves in a system can cause hydraulic lock of fluid trapped inside and whether that can damage the valve
If this is common, does it have a name other than hydraulic lock?
Thanks
