Become a TFP Supporter Pool Math Forum Rules Pool School
Results 1 to 3 of 3

Thread: Drain in the deep end

  1. Back To Top    #1

    Drain in the deep end

    If there is a drain in the deep end where does the water go when you drain the pool?
    20K gal.
    Hayward S-244T sand filter
    IG vinyl

  2. Back To Top    #2
    Ohm_Boy's Avatar
    Join Date
    May 2007
    Orlando, FL

    Re: Drain in the deep end

    Usually into the neighbor's yard, depending upon where you point your backwash hose.

    Seriously, the drain in the bottom of the pool is not like the drain in the bottom of a sink. It's another intake point for the filter system. That way your filter can pull from the bottom of the pool as well as from a skimmer at the top.
    So to recap, water leaves the pool from a skimmer or drain, travels through the pump and filter, and returns to the pool by way of the .... ummm... 'returns'.
    [center:1kpalu48]Helpful Links: Pool School | CYA/Chlorine Chart | Pool Calculator[/center:1kpalu48]

  3. Back To Top    #3

    Join Date
    Jan 2009
    Cupertino, CA

    Re: Drain in the deep end

    If the local water table might be a problem, the main drain often has a relief valve in it, so when you're trying to pump water out, and it goes below the water table level, the relief valve starts letting groundwater in.
    BBB "Intermediate Swimmer"
    IG plaster pool 18.5K gal, Hayward Pro-Grid DE filter, 3/4 HP Hydramax II; Polaris 380, 3/4 HP booster
    AG spa 325 gal, probably Sundance of some kind
    Water testing instructions on one page

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts