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Thread: vent locations

  1. #1

    Default vent locations

    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

    victor

  2. #2
    Journeyman & Gas Fitter Doherty Plumbing's Avatar
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    Jun 2009
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    Penticton, BC
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    810

    Default

    Quote Originally Posted by victorlevin View Post
    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

    victor
    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!

  3. #3
    Moderator & Master Plumber hj's Avatar
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    Aug 2004
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    Cave Creek, Arizona
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    25,655

    Default vents

    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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