Anti-siphon hose bib

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

  1. Burford

    Burford New Member

    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

    Apr 18, 2005
    Service Plumber, Outdoor Temperature Relief Owner
    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

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

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

    PEW DIY Senior Member

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