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Thread: Valve question..

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    Valve question..

    Hi,

    This is a main drain & skimmer union pipe that is attached (by a spinning collar) to my Hayward Super Pump for an inground pool.

    1) What do you call this "union pipe"? I'm sure there must be a more correct name....

    2) How do i plug it for the winter?

    thanks!!
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    24k Gal, IG Plaster(I think), Hayward EC-65 DE filter , 1 speed US Motors pump, rusted coping with splintering wood covering (eewwww)...its Upstate NY, after all...Taylor K-2006 test kit...Pool is 40+ years old

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    Mod Squad jblizzle's Avatar
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    Re: Valve question..

    I am not exactly sure what you are asking about

    I see 2 valves (maybe gate valves) that I assume are joined by a Tee fitting and then I assume it enters your pump on the left of the picture and it connected to the pump with a union fitting.

    Is this an AG or IG pool? Take a bigger picture.

    Please add your pool details to your signature and location to your profile as described HERE as it will help us help you.

    Not sure what it is you are trying to plug.
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
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    Re: Valve question..

    it's an 16 x 32 in ground pool...you are exactly right on the valve Tee details....i want to plug it where it enters the pump.
    24k Gal, IG Plaster(I think), Hayward EC-65 DE filter , 1 speed US Motors pump, rusted coping with splintering wood covering (eewwww)...its Upstate NY, after all...Taylor K-2006 test kit...Pool is 40+ years old

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    Mod Squad jblizzle's Avatar
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    Re: Valve question..

    Why do you need to plug it? If the pump is above water level, then water will no flow out of that pipe.

    You can likely find a "pool plug" / "winterizing plug" that would close it up ... Google one of those terms to see pictures.
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
    500 sqft Heliocol solar panels, ThePoolCleaner, TF-100 test kit w/ SpeedStir
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    techguy's Avatar
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    Re: Valve question..

    Hayward uses a union in many of their pumps and filter combinations and the "nose" of the filter side on mine is rounded. Many o f the unions you buy at a pumbing supplier or HD are flat between the two halves.
    -- Guy --
    10K gallons in 21' Round 52 inch wall Aqualeader AG, Hayward Power Flow LX 1.5 HP pump motor, Hayward Perflex EC50AC DE filter w/Cellulose, Wide mouth skimmer, 2013 new Diver Dan (craigslist) to replace the faded old Hayward AquaBug. TF-100

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    Re: Valve question..

    So this is just called a "union", then? Is that all its called?

    And the valves are higher than the water level...i just thought i was supposed to plug up the opening of this big valve for the winter. (as i'm in NY)
    24k Gal, IG Plaster(I think), Hayward EC-65 DE filter , 1 speed US Motors pump, rusted coping with splintering wood covering (eewwww)...its Upstate NY, after all...Taylor K-2006 test kit...Pool is 40+ years old

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    Mod Squad jblizzle's Avatar
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    Re: Valve question..

    The part that screws onto the pump is 1/2 of a typical union. Note that Hayward does not use standard threads so you will not find one that matches the threads at the hardware store if that is what you are thinking.

    I do not close my pool, so I am not sure if you would have to plug it or not. I would think if you blew out most of the water and plugged the lines in the pool, that would leave the pipes mostly empty and should not freeze. But, again, I am no expert

    Have you read this?
    pool-school/closing_in_ground_pool
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
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    Pool School + Test Kit + PoolMath = A TROUBLE FREE POOL
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    Re: Valve question..

    Mine is similar. Just disconnect the pump at the union and put it inside for the winter. I then lower the water level just below the skimmer and blow out the skimmer line with a shop vac. Next screw a skimmer guard gizmo in the skimmer and close the valve at the other end. Then open the main drain valve and blow back into the main drain with the vac. A powerful vac will blow air out the main drain. Some don't, but that's ok. Just blow the water back as far as possible and quickly close the valve so the air holds the water back. Then get the right size black expandable rubber plug and put it in the open end of the union. You also need to blow out and cap the return lines and do whatever else is necessary for winterizing in your area.
    17x37 IG vinyl, Grecian style, 20k gal, Hayward DE4800, Hayward Super Pump II 1 hp, Rainbow 320 Chlorinator, 6 Vortex 4x10 solar panels, Aquabot Turbo, Dolphin M5, loop-loc mesh cover

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