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

Thread: Fixing a shared-equipment in-ground spa with broken underground spillover

  1. Back To Top    #1

    Join Date
    Jun 2015
    Location
    Hillsborough, CA
    Posts
    3

    Fixing a shared-equipment in-ground spa with broken underground spillover

    I have a possibly unusual setup. I have a 40k gallon in-ground pool with a detached spa. The spa is plumbed exactly like a normal spillover spa, except that the spa is level with the pool and is separated by about ten feet of concrete deck from the pool. To keep the spa from overflowing due to bypass water from the pool circulation, there are three PVC pipes, about 1 inch each, that connect the spa to the pool near the water line.

    The installation of those pipes is garbage. There's neither gunite nor plaster around them, and the tiles near them are cracked. You can see dirt around the pipes. Everything is currently held together with epoxy, and I'd like to fix it permanently.

    Even with the epoxy patch, the pipes are narrow enough that, at high flow, the spa will overflow despite the pipes carrying water to the pool.

    The question is: how should I fix it? I could replace the tiles and seal it, but then I have to continue being very careful with the bypass. I could plumb a constant flow valve into the bypass. I could put in bigger pipes, or even a big rectangular PVC pipe if I can find one. Heck, I could go nuts and put in a skimmer with a check valve that goes straight to the pool or a skimmer with a float valve that connects to the pool suction lines.

    How is this type of setup usually done? All of the in-ground shared-equipment spas I've ever seen are next to the pool.

    If I really wanted to go nuts, I'd separate the bodies of water and see about insulating the spa. This is California, so the pool never closes, but it would still be nice to keep the spa hot all the time.
    40k gallon covered plaster in-ground pool, detached spa w/ underground spillover, Ecostar VS pump, cartridge filter, OmniLogic w/ T-15 SWG, Sense and dispense (chlorine only)

  2. Back To Top    #2
    Mod Squad Bama Rambler's Avatar
    Join Date
    Jun 2009
    Location
    SouthWest Alabama
    Posts
    22,347

    Re: Fixing a shared-equipment in-ground spa with broken underground spillover

    The proper way to fix it would be to run larger pipes between the two. You could use gutter downspout piping if you wanted square but just round pipe would work well if it's sized properly.
    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
    Pool School ----- Pool Math ----- TF-Test Kit

  3. Back To Top    #3

    Join Date
    Jun 2015
    Location
    Hillsborough, CA
    Posts
    3

    Re: Fixing a shared-equipment in-ground spa with broken underground spillover

    I'm tempted to try both larger pipes and a constant flow valve. One problem with bigger pipes is that replacing the pipes at all might require doing some fancy horizontal boring and possibly tearing up either the deck or the lawn and maybe draining the pool more than just a few inches if the boring gets too messy.

    Has anyone here found a usable constant flow valve that can be easily plumbed into standard 2" PVC?
    40k gallon covered plaster in-ground pool, detached spa w/ underground spillover, Ecostar VS pump, cartridge filter, OmniLogic w/ T-15 SWG, Sense and dispense (chlorine only)

Posting Permissions

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