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Thread: Main Drain

  1. Back To Top    #1

    Join Date
    Apr 2007
    Location
    Ohio
    Posts
    217

    Main Drain

    Hi everybody
    Can anybody explain how a main drain with a hydrostatic valve operates these are my concerns.
    1. pool drainage from excessive leaf build up.
    2. Whin winterizing I never have blown the main drain out but install a 4 foot ruber hose sealed at both ends per instructions from manufactory. I have never had any problems but it makes me nervous through the winter as the temps drop below o. Can you blow the lines out of a main drain with a flapper valve and if so what would be the recommendations. Like I said I have had no problems but I just think about this all winter.
    I would really like to know how these hydrostatic drains work i cant seem to picture this in my little brain.
    Thanks Ric W
    Ric W
    My Pool
    8605 gal fiberglass, 3/4 hp pump, sand filter, aquabot cleaner, heat siphon heat pump, tiger river(sumatran) spa

  2. Back To Top    #2
    JasonLion's Avatar
    Join Date
    May 2007
    Location
    Silver Spring, MD
    Posts
    37,879
    Here is a good explanation of how a hydrostatic valve operates.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
    Creator of PoolMath and Pool Calculator. Other handy links: Support this site, TF Test Kits, Pool School

  3. Back To Top    #3

    Join Date
    Apr 2007
    Location
    Ohio
    Posts
    217
    Thanks JasonLion very good explanation on the main drain Thanks again- Ric W
    Ric W
    My Pool
    8605 gal fiberglass, 3/4 hp pump, sand filter, aquabot cleaner, heat siphon heat pump, tiger river(sumatran) spa

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