Wilkins 975xl Flow/Pressure Issues

Discussion in 'Irrigation / Sprinkler Forum' started by dblackburn, Oct 21, 2016.

  1. dblackburn

    dblackburn New Member

    Oct 21, 2016
    I have a Wilkins 975xl backflow preventer. It is removed every winter and passes its test before every spring. That said - my sprinkle output is very weak. Each time I run the sprinklers I have to shut off the water coming from the Wilkins and open the three relief valves. This can be done in any order - once all three are open - I shut them off one at a time - open the water valve back up - and my sprinklers run just fine.....

    Once done all 5 zones run normally. There are no visible leaves from the preventer.

  2. Gary Swart

    Gary Swart In the Trades

    Sep 1, 2004
    Yakima, WA
    Has it always done this? I have a Wilkins BF also, not sure of the model #, but your description is quite similar to mine, and I have never had this problem. I will be following this thread to see if there you get an answer to your question.
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  4. WorthFlorida

    WorthFlorida The wife is still training me.

    Oct 28, 2009
    Orlando, Florida
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