vent locations

Discussion in 'Plumbing Forum, Professional & DIY Advice' started by victorlevin, Jul 2, 2009.

  1. victorlevin

    victorlevin New Member

    Jul 2, 2009
    my cottage has a shower, toilet and two sinks emptying into a septic tank. But the cottage doesn't have any venting in the plumbing.

    i want to know what the rules are for installing a vent system: one for each item or after they tie into the main drain?

    thanks for the help

  2. Doherty Plumbing

    Doherty Plumbing Journeyman & Gas Fitter

    Jun 22, 2009
    Red Seal Journeyman Plumber & Licensed Gas Fitter
    Penticton, BC
    Well at this point anything is better then nothing!

    Do you have a drawing, showing roughly how the plumbing is done. Where what fixtures are tied in etc. Doesn't have to be fancy!
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  4. hj

    hj Moderator & Master Plumber Staff Member

    Aug 31, 2004
    Cave Creek, Arizona

    The simple rule that EVERY trap requires a vent between the trap and the drain connection, and before it turns downward. BUT that could mean many vents or just one depending on how the fixtures and piping are arranged.
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