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Thread: Check valves, Before the pump, and after the pump?

  1. Back To Top    #1

    Join Date
    Oct 2014
    Bay Area, California

    Check valves, Before the pump, and after the pump?

    Ordering a bunch of stuff for the new equipment install. Was thinking, as well as the check valve before the pump, do I also want one between the pump and filter? So the huge cartridge filter doesn't drain out my pump every time I clean the pump basket??
    Approx 15,000 gallon gunite pool, fiberglass finish. Hayward SP2302VSP, compools solar controller, 6 4x10 "Sealed Air" brand solar panels, Clean and Clear 520 cartridge filter

  2. Back To Top    #2

    Join Date
    May 2015
    Mount Cheaha Alabama

    Re: Check valves, Before the pump, and after the pump?

    Put a shutoff valve above the pump they sell them with unions built in and it can be located closer to the filter so if you need to remove the selector valve or pump for maintenance you have a union there.
    Check valves in the suction can make life easy and cause issues when debris gets stuck in them, it will also prevent you from priming the suction line when opening the system
    If you only ever plan on running your pump manually put the same type of ball shutoff with union upstream and open it before turning on your pump, close it when you shut it off - you'll never lose prime this way
    30k in ground vinyl lined pool surrounded by decking in the woods.
    Hayward sand filter circa mid 80's
    If there is a way to do things less expensively and yield a superior product I am all ears

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