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

Thread: Sucking air on on suction side of pump

  1. Back To Top    #1

    Join Date
    Sep 2015
    Plesant Hill, CA

    Sucking air on on suction side of pump

    Hi All,
    I was hoping for some advice before I start replacing stuff. I am getting air on the suction side of my plumbing and I think it's the 3 way Jandy valve that controls flow between skimmer and the drain. When I have it full open it doesn't appear that much air gets pulled into the system. However if I close it in either direction I get more air in the line (especially if I close the skimmer and pull only from the main drain). When pump is off I don't appear to have any leaks, and the water level doesn't appear to drop any more than usual (I don't have an autofill).

    If I'm right what should I look at replacing? The entire valve, or does typically a rebuild + O-rings typically work?

  2. Back To Top    #2

    TFP Guide

    chiefwej's Avatar
    Join Date
    Jun 2011

    Re: Sucking air on on suction side of pump

    If it is the valve a rebuild should take care of it. When looking for a suction leak, you can often isolate and confirm it with some plastic wrap.
    Tucson, AZ
    16x36 rectangular (19k) Pebble Tec play pool/spa, Pentair Intelliflo VS 011018, Super II 2hp (spa), Aqua Rite T-15 SWG, Pro Grid 60 DE, Hayward H400 & Heliocol Solar heating, A&A infloor system, fill water w/high CH and TA, 50 ppm borates,TF-100 test kit

  3. Back To Top    #3

    In the Industry

    duraleigh's Avatar
    Join Date
    Apr 2007
    Sebring, Florida

    Re: Sucking air on on suction side of pump

    As you pull from either skimmer or main drain, you are applying additional suction (restriction) to the pump intake.

    Check the pump 0 ring first. That varying suction can cause the o ring to leak when suction is high and stop leaking when suction is low (when the jandy is pulling from both sources)
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

Posting Permissions

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