Sprinkler water lines

Discussion in 'Irrigation / Sprinkler Forum' started by jerome8283, Nov 1, 2006.

  1. jerome8283

    jerome8283 New Member

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    Location:
    New York
    Every year I turn off the main valve to my sprinkler system and have the sprinkler lines blown out. This main valve also turns off the water hose in the backyard since it's connected to the same main shutoff. My question is, once I turn this valve off and blow out the water in the sprinkler lines can I turn the valve back on so that I have access to the garden hose? Will water fill the sprinkler lines or would this only occur if or when I turn on the sprinklers on for the first time again?
  2. Gary Swart

    Gary Swart In the Trades

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    Location:
    Yakima WA
    The sprinkler lines would stay dry, but the valves would have water in them and would probably freeze, and the water line to the backyard would also freeze.
  3. Verdeboy

    Verdeboy In the Trades

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    2,051
    I would suggest tapping into another water source for your garden hose. They make hose adapters that screw on to a faucet spout after removing the faucet aerator.
  4. Gary Swart

    Gary Swart In the Trades

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    7,328
    Location:
    Yakima WA
    I agree, but that source has to be protected from freezing also. If you install a frost free valve into the house, you can have water year around. However, do not leave a hose connected to it during cold weather. That prevents the frost free valve from drain and it will freeze and break.
  5. jerome8283

    jerome8283 New Member

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    140
    Location:
    New York
    Thanks guys!
  6. Randyj

    Randyj Master Plumber

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    Location:
    Alabama
    Gary... if you put a vaccum breaker on the faucet then wouldn't the frost free valve be able to drain if a hose pipe were attached?
  7. Gary Swart

    Gary Swart In the Trades

    Messages:
    7,328
    Location:
    Yakima WA
    I can't verify this for all brands, but my frost free faucets have a build in anti syphon feature, but you can not leave a hose attached or the draining will not happen. I learned this the hard way several years ago. There was water in the 12" section of the valve between the bib and the actual shut off, and come spring when I tried to use the faucet, I discovered that section of copper pipe had split big time!
  8. Randyj

    Randyj Master Plumber

    Messages:
    1,047
    Location:
    Alabama
    I've replaced/repaired a couple of those for the same reason you mentioned except they got busted by being sloped backwards. I agree tho' ...best idea is to disconnect hose... cold plastic/rubber can get brittle and bust your hose pipe when it freezes...if it doesn't bust the cold & ice can really put hell on it and make it unusable in the spring.
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