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Thread: What is this valve for?

  1. Back To Top    #1

    Join Date
    Jul 2012
    Austin, TX

    What is this valve for?

    Hi all,

    I have an air machine below water level. The pipe from machine to spa has a T fitting. One end goes to spa while the other end goes to a valve. Do you know why the valve needs to be there?

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    Lazy-L shaped pool and a spa. 22.5k gallons. Pentair VS pump. Pentair cartridge filter CCP520. STA-Rite SR400NA heater (400K BTU). Hayward salt system. Leuder limestone coping. Pebble sheen (blue granite) Wooden deck.

  2. Back To Top    #2
    wetchem's Avatar
    Join Date
    May 2012
    Somewhere in the middle of Nebraska

    Re: What is this valve for?

    Just guessing as from the picture I can only see one T-Fitting with one end that points out into the open air with what appears to be the valve without a handle that you are talking about... yes?

    My Best Guess: it is either to allow you to drain the plumbing to that point or to allow connection to something else at one point in time.
    Intex Ultraframe 14'x3.5-Round (4000ish-gal) AG - Vinyl - Intex 5667EG Sand Filter 1600gph :)
    ( retired: 637R Crtrge 1000gph someday it may have another life as a water fountain... or feet washer! Solar Water Heater? )

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  3. Back To Top    #3

    Re: What is this valve for?

    It might be to allow some air loss if the blower provides too much air flow or pressure.

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