Trying to figure out the function of my main water valve...

Discussion in 'Plumbing Forum, Professional & DIY Advice' started by fizzle7, Jun 29, 2020.

  1. fizzle7

    fizzle7 New Member

    Joined:
    Jun 29, 2020
    Location:
    Oregon
    Hi all,

    First post on this forum, I had a question regarding my home water valve. I assume the red lever controls the water from the mains to the house. But the two blue levers I am confused by. I don't want to just start turning things without understanding the impact, so I was hoping someone might know.

    I have an underground sprinkler system so I assume the two blue levers are part of a double check backflow system.

    The question however is why does it appear one valve is open and one is closed? Meaning, the levers are in two different positions. Is this typical of such a system? Or does it mean my sprinkler water supply is shut off? etc.

    As a side note, my sprinkler system does not currently operate and I have wondered if it's simply due to the valve being closed.

    Thanks for the help and please ignore the spider webs!

    main.jpg
     
  2. fitter30

    fitter30 Active Member

    Joined:
    Feb 2, 2020
    Occupation:
    Retired service tech
    Location:
    Peace valley missouri
    Valve on the left is off right is on
     
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  4. Reach4

    Reach4 Well-Known Member

    Joined:
    Sep 25, 2013
    Location:
    IL
    I suspect there may have been such a device there in the past, and somebody eliminated that.
     
  5. WorthFlorida

    WorthFlorida The wife is still training me.

    Joined:
    Oct 28, 2009
    Occupation:
    Retired
    Location:
    Orlando, Florida
  6. fitter30

    fitter30 Active Member

    Joined:
    Feb 2, 2020
    Occupation:
    Retired service tech
    Location:
    Peace valley missouri
    Irrigation systems should have a backflow device that is approved by either the state or city. Thease devices keep your water supply and in case of city water your neighbors water safe from ground water entering the water supply when something happens to the supply.
     
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