Become a TFP Supporter Pool Math Forum Rules Pool School
Results 1 to 6 of 6

Thread: Beware of Hasa's check valves

  1. Back To Top    #1
    Water_man's Avatar
    Join Date
    Jun 2008
    Location
    Brookline, MA
    Posts
    390

    Beware of Hasa's check valves

    When I first installed my LQ I removed the check valves because the initial flow was slow and it was posted everywhere that if your equip is above water level you don't need'em. This is also what the tech from HASA said.
    After the installation I noticed that my pool was fed by not only FC, but also by DE too.
    When the pump shuts off, the LQ drained into the inlet line, bringing air into the system. I noticed the pump basket got filled with DE. (I have the Hayward Super Pump with a transparent basket cover.)
    I reinstalled the check valve into the "In" line. There was no flow reduction and no more DE running back into my pool!
    This is my ticket for Heaven (when all's working..) :
    22k Gal gunite IGP, 38 SF Anthony DE filter, 1 HP Hayward Super Pump
    380k BTU Raypak Natural Gas Heater (Model RP405A) and solar cover
    8 gal Liquidator w/ 12% bleach, Dolphin Diagnostic Advantage robotic cleaner. 3800 ppm salt, 50 ppm borates.

  2. Back To Top    #2

    Join Date
    Mar 2008
    Location
    Garden State
    Posts
    80

    Re: Liquidator's check valve is needed on the intake line

    I noticed some DE flowing back into my pump as well (have same pump as you). I will install my check valve on the inlet side and see how it works. Did you use the one that came with the LQ or a replacement one from elsewhere?
    Pool Details:
    - inground vinyl liner, approx 35,000 gal; Hayward DE-6000; Pentair VS3050
    - 600sq ft Heliocol; Blue Diamond; 8 Gal Liquidator
    - TF-100

  3. Back To Top    #3
    Water_man's Avatar
    Join Date
    Jun 2008
    Location
    Brookline, MA
    Posts
    390

    Re: Liquidator's check valve is needed on the intake line

    Quote Originally Posted by pooltime
    I noticed some DE flowing back into my pump as well (have same pump as you). I will install my check valve on the inlet side and see how it works. Did you use the one that came with the LQ or a replacement one from elsewhere?
    I used the original one. No DE problems or pump not priming ever since.
    This is my ticket for Heaven (when all's working..) :
    22k Gal gunite IGP, 38 SF Anthony DE filter, 1 HP Hayward Super Pump
    380k BTU Raypak Natural Gas Heater (Model RP405A) and solar cover
    8 gal Liquidator w/ 12% bleach, Dolphin Diagnostic Advantage robotic cleaner. 3800 ppm salt, 50 ppm borates.

  4. Back To Top    #4
    Water_man's Avatar
    Join Date
    Jun 2008
    Location
    Brookline, MA
    Posts
    390

    Re: Beware of Hasa's check valves

    As mentioned above I installed the original check valve in the "in" line.
    Recently I noticed that after pump shut off air comes to the system and the pump basket is no longer air-and-DE free. I checked the check valve and lo and behold - it goes both ways. These valves go out of order with time. You can't assume that if you check it OK when you install it will go on forever.
    This is my ticket for Heaven (when all's working..) :
    22k Gal gunite IGP, 38 SF Anthony DE filter, 1 HP Hayward Super Pump
    380k BTU Raypak Natural Gas Heater (Model RP405A) and solar cover
    8 gal Liquidator w/ 12% bleach, Dolphin Diagnostic Advantage robotic cleaner. 3800 ppm salt, 50 ppm borates.

  5. Back To Top    #5
    JasonLion's Avatar
    Join Date
    May 2007
    Location
    Silver Spring, MD
    Posts
    37,887

    Re: Beware of Hasa's check valves

    This might be an effect of the white stuff. Sometimes a quick rinse in dilute muriatic acid will get it working again.
    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

  6. Back To Top    #6
    Water_man's Avatar
    Join Date
    Jun 2008
    Location
    Brookline, MA
    Posts
    390

    Re: Beware of Hasa's check valves

    Quote Originally Posted by JasonLion
    This might be an effect of the white stuff.
    This check valve is in the "in" side of the system, where FC level is pool level and there's no WS buildup. The valve should have not been in contact with any LQ top layer water had it been working properly in the first place.
    This is my ticket for Heaven (when all's working..) :
    22k Gal gunite IGP, 38 SF Anthony DE filter, 1 HP Hayward Super Pump
    380k BTU Raypak Natural Gas Heater (Model RP405A) and solar cover
    8 gal Liquidator w/ 12% bleach, Dolphin Diagnostic Advantage robotic cleaner. 3800 ppm salt, 50 ppm borates.

Posting Permissions

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