Become a TFP Supporter Pool Math Forum Rules Pool School
Results 1 to 5 of 5

Thread: Is my filter plumber correctly?

  1. Back To Top    #1
    From_Arizona's Avatar
    Join Date
    May 2007
    Location
    Glendale, AZ
    Posts
    212

    Is my filter plumber correctly?

    My solar company just told me that my filter backwash connection is plumbed incorrectly....I have been looking at pentairs website to find specs on installation, but cannot find specific details on what connects to the top vs. bottom openning. Can anyone add their thoughts?

    I have the plumber coming out on Monday to repair a pipe my decking guys broke today and will discuss with him at that time, I just like to know what I am talking about and do not want to be pushed around if he is unsure.

    Here is a picture of the Pentair Quad DE filter at the backwash connection.
    <a></a>
    <a></a>
    1980's Shasta built 30,000 gal inground diving pool. Pebble-tec interior. Pentair DE Filter. In ground pop-ups. Hayward Navigator sweeper.

  2. Back To Top    #2
    mas985's Avatar
    Join Date
    May 2007
    Location
    Pleasanton, CA
    Posts
    11,419
    It looks wrong to me but I haven't had much experience with those and I'm only going on how I think the valve works. The filter side is OK and the pump is plumbed to the correct fitting (center) but the return and the backwash pipe should be swapped.

    Otherwise, water will go backwards through the filter in backwash mode and out the return line. In normal mode, the water will go forward through the filter but out the backwash pipe.
    Mark
    Hydraulics 101; Pump Ed 101; Pump/Pool Spreadsheets; Pump Run Time Study; DIY Acid Dosing; DIY Cover Roller
    18'x36' 20k plaster, 1/2 HP 2sp pump, Aqualogic PS8 SWCG, 420 sq-ft Cartridge, Solar, 6 jet spa, 1 HP jet pump, 400k BTU NG Heater

  3. Back To Top    #3
    JasonLion's Avatar
    Join Date
    May 2007
    Location
    Silver Spring, MD
    Posts
    37,879
    I agree with mas985.

    Naming everything relative to the push pull valve in the picture, I am assuming that currently the middle left hand pipe comes from the pump, the top left goes to the return, and the bottom smaller pipe is the waste line. I believe that the Quad DE has the filter inlet on the top, so in normal operation the outlet, bottom right, would feed the bottom smaller pipe, which is wrong if that is plumbed to the backwash line. And backwash position on the valve would run water backwards through the filter and wash all the DE into the pool.
    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

  4. Back To Top    #4
    From_Arizona's Avatar
    Join Date
    May 2007
    Location
    Glendale, AZ
    Posts
    212
    Thank you both for your replies...yes the small pipe on bottom is the waste line.

    I really appreciate your help - can't wait for another "fix" from my plumber.
    1980's Shasta built 30,000 gal inground diving pool. Pebble-tec interior. Pentair DE Filter. In ground pop-ups. Hayward Navigator sweeper.

  5. Back To Top    #5
    From_Arizona's Avatar
    Join Date
    May 2007
    Location
    Glendale, AZ
    Posts
    212
    Yes, plumber came out today and agreed that the plumbing was connected wrong. They will be back out later this week to redo the whole connection....at least it is not currently delaying my swim ability.

    Sure doesn't increase my confidence in his crew abilities, he has someone new out here today to correct the pipe that broke during the decking install. Can't believe all the issues with the crew that did the install.
    1980's Shasta built 30,000 gal inground diving pool. Pebble-tec interior. Pentair DE Filter. In ground pop-ups. Hayward Navigator sweeper.

Posting Permissions

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