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Thread: Do I need a Check\backflow preventer valve

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    DLaplante's Avatar
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    Do I need a Check\backflow preventer valve

    Bought foreclosure, and Ozone thingy didn't work threw it out, and the mineral thingy no good removed it, so moving my SF, and pump to slightly new location after i pour concrete for it, cleaning up the whole set-up do I need to add a check valve, and where would one normally put it. After the Heater on the return side?

    Can anyone identify my heater model I cant read any of the stickers on it
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    20x40 Vinyl IG, 27k gal, 1 hp hayward, s244s hayward SF, Hayward SWG 1 floor drain, 2 Skimmers, 4 Returns, Fiberstars FO lights, Polaris booster, and 380 polaris cleaner.

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    DLaplante's Avatar
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    Re: Do I need a Check\backflow preventer valve

    I have removed the mineral filter, and the ozone. I want to leave enough room for a SWG, and do I need to add a check valve somewhere?
    Attached Images Attached Images
    20x40 Vinyl IG, 27k gal, 1 hp hayward, s244s hayward SF, Hayward SWG 1 floor drain, 2 Skimmers, 4 Returns, Fiberstars FO lights, Polaris booster, and 380 polaris cleaner.

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    DLaplante's Avatar
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    Re: Do I need a Check\backflow preventer valve

    I removed the length of PVC that connected the Ozone pipe, and the mineral box, added straight piece of PVC from the Heater to the return line.

    would my check valve go there, and before or after a SWG if I add one?

    Circled in red are the Ozone pipe, and the mineral box. the white on the other pic is where the straight piece of PVC is now.
    Attached Images Attached Images
    20x40 Vinyl IG, 27k gal, 1 hp hayward, s244s hayward SF, Hayward SWG 1 floor drain, 2 Skimmers, 4 Returns, Fiberstars FO lights, Polaris booster, and 380 polaris cleaner.

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    DLaplante's Avatar
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    Re: Do I need a Check\backflow preventer valve

    Heater
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    20x40 Vinyl IG, 27k gal, 1 hp hayward, s244s hayward SF, Hayward SWG 1 floor drain, 2 Skimmers, 4 Returns, Fiberstars FO lights, Polaris booster, and 380 polaris cleaner.

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    Mod Squad Bama Rambler's Avatar
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    Re: Do I need a Check\backflow preventer valve

    You shouldn't need a chack valve until you install the swcg. Then it will go between the heater outlet and the swcg.
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/¼hp SPL Power-Flo 2-speed pump. 200sqft Waterway Cartridge Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
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    DLaplante's Avatar
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    Re: Do I need a Check\backflow preventer valve

    OK thanks, any recommendations on quality valves or suppliers. I have bought from Inyo, and in the swim?
    20x40 Vinyl IG, 27k gal, 1 hp hayward, s244s hayward SF, Hayward SWG 1 floor drain, 2 Skimmers, 4 Returns, Fiberstars FO lights, Polaris booster, and 380 polaris cleaner.

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    Re: Do I need a Check\backflow preventer valve

    You really dont need a check valve with a salt system since the flow switch will prevent the unit from making chlorine when the pump isnt running.
    Over 30 years in the pool business
    We build vinyl, fiberglass, stainless steel pools
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