Pressure relief valve automatic - search

[iom]

I would like to install after the pump an automatic pressure relief valve; up to 50 psig.
Ideal would probably be an add on to the water pipe, or mounted on the sand filter where a manual air vent is.

I have a nightmare scenario:
Installation has a flap water flow valve that has inside relays under full line voltage. If the seal is blown - water + electricity will do ugly things.
If the line to the pool is obstructed (e.g. closed valves) the pump may create pressure that may blow a lot -- water seals in the electric valve or explode something else.
The least damage is that the flow valve needs replacement - the most is somebody gets killed - as unfortunately most dealers install pumps and equipment without GFI circuit breakers.
Any suggestions what automatic pressure relief valve to buy that would be relative easy to install.

 

[atttech-2]

I am having a hard time visualizing your setup can you post a picture or 2?

 

[JoyfulNoise]

Typical residential pool pumps can't even come close to generating 50psig pressure. As well the operating pressure and required minimum burst pressure of SCH40 PVC is a lot higher than that (see here - PVC Pipes - Pressure Ratings). I'm not sure your fears, other than the electrical ones, are well founded. As for the electrical problem, something doesn't sound right with the valve that you describe. I have hard time believing that a valve with full 120VAC line voltage would be allowed to be used in a pool system where the line voltage could easily be exposed to the water stream.

We definitely need to see pictures of what you have here with equipment specs.