Help pressure release valve with electrical shut to pump

19 Jul 2011
Reaction score
United Kingdom
hi folks bit of a strange one for you

I have a friend who is running a small caravan boiler to heat water for a window cleaning system.

The problem he has when he turns off the pull at the end of the pipe the pump has a sight over run that can on occasions cause the boiler to get over pressured and blow off the pipe.

From my point the logical thing to do is fit a pressure release value but as the system operates on a no pressure draw to active the pump if the valve operates the pump kicks in and the stops, has the over run, builds up pressure and you are back to square one.

My question is can you get a pressure realise value that has an electrical solinoide on it so when it actives it cuts the power to the pump.


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