Anti-siphon hose bib

Discussion in 'Plumbing Forum, Professional & DIY Advice' started by Burford, Sep 5, 2005.

  1. Burford

    Burford New Member

    Joined:
    Sep 5, 2005
    All my antisiphon hose bibs are leaking badly when water is turned on; water pours from the top where the green plastic cover is. I understand that there is possibly a leaky washer underneath, but I can't figure out how to get the plastic top off. (Hexagonal green plastic). Brute force, or is there a trick?
     
  2. Dunbar Plumbing

    Dunbar Plumbing Master Plumber

    Joined:
    Apr 18, 2005
    Occupation:
    Service Plumber, Outdoor Temperature Relief Owner
    Location:
    Northern Kentucky/Greater Cincinnati Area
    Pop that cap off, there is a rubber O-ring that is cracked. If the whole plastic part inside is cracked, then replace it with a rebuild kit. Most times it is a rubber O-ring that has cracked and split apart; a common situation with rubber products in plumbing. Produce a manufacture's name and I can probably find you a PDF explosion of your product so that you know how to take it apart. It is like a floating check valve that prevents the reversal of flow from the hose connected to the faucet, back into the potable water system.
     
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  4. toolaholic

    toolaholic General Contractor Carpenter

    Joined:
    Jul 16, 2005
    Occupation:
    Repairing and remodeling homes
    Location:
    Marin Co. Ca.
    the ones ,i,ve seen in Ca.

    are metal. sound,s better than plastic
     
  5. PEW

    PEW DIY Senior Member

    Joined:
    Sep 2, 2004
    I have found that many times it is just debris that can be clean out.
     
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