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Thread: Slow pressure increase

  1. #1

    Default Slow pressure increase

    Each of my six zones works at approximately 75% pressure for the first 5-8 minutes, then eventually ramps up to the usual area coverage. Never did this before. I read an earlier post about low pressure in one zone and the recommended fix was either a new solenoid or diaphragm. I'm wondering if that could be the issue for me as well.
    I have a Watermaster 57223 auto valve model. 3/4". Due to placement, I'd hate to have to replace the entire sprinkler valve.

  2. #2
    DIY Senior Member upper's Avatar
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    City water or your well?....Upper

  3. #3

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    City water. System is at least 5 years old. I have been using it problem free for 3 years.

  4. #4
    DIY Senior Member upper's Avatar
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    So if you took 2 or 3 garden hoses and turned them on,the would not fluctuate greatly? Second all zones do this equally?Thirdly when a zone comes on and is lacking,go and manuallly turn the solin. lefty lucy and see if this helps...Upper

  5. #5

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    The hoses would not fluctuate greatly...pressure is solid at my house.
    All zones do this equally. There are 6 zones total.
    I haven't fiddled with the solenoids yet. It seems odd that all six would need a tweaking.
    I tried turning lefty lucy and saw no noticeable benefit.

    Thanks for taking the time to help.
    Last edited by tbris; 06-28-2009 at 10:09 PM.

  6. #6
    DIY Member
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    Seems to me that if you're having the problem in each of the 6 zones that the problem is between your water source and the valve manifold. Very doubtful that the problem is in all the individual zone valves. Do you by chance have a master valve in the system? I would track your plumbing back to your water source tie in point. What kind of backflow device do you have? Is there a pressure regulator in the system? These are some of the things you need to check. Especially since it is a city water system, it should be easier to track down.

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