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Thread: Pressure relief valve automatic - search

  1. Back To Top    #1

    Join Date
    May 2012
    Tempe, AZ

    Pressure relief valve automatic - search

    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.
    Pools size: 21,690 gallons in ground plaster on concrete;
    in-line Pentair tablet chlorinator; Triton II with ClearPro sand filter;
    Hayward Ecostar SP3400 vsp; automatic accid injection by SOLAXX.

  2. Back To Top    #2

    TFP Guide

    Join Date
    Jul 2015
    Central Valley CA

    Re: Pressure relief valve automatic - search

    I am having a hard time visualizing your setup can you post a picture or 2?
    12,300 Gallon, IG PebbleFina, built Oct 2015, 3 ft sheer, 2 Jandy nicheless LED lights, Jandy Pro 1.5HP VS pump (A.O. Smith Motor), PB4-60 Booster pump, Polaris 280, Jandy cv340 cartridge filter, Zodiac z4 control panel W/iAquaLink, 10GPDStenner for chlorine, 3GPD Stenner for MA, TF-100.

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    JoyfulNoise's Avatar
    Join Date
    May 2015
    Tucson, AZ

    Re: Pressure relief valve automatic - search

    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.
    16k IG PebbleTec pool, 650gal spa, spillway and waterfall, 3HP IntelliFlo VS / 1.5HP WhisperFlo, Pentair QuadDE-100 filter, IC40 SWCG, MasterTemp 400k BTU/hr NG heater, KreepyKrauly suction-side cleaner, EasyTouch controls, city water, K-1001, K-2006 and K-1766 test kits, Mannitol test for borates

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