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Old 04-11-2008, 06:15 AM
Richard Roshak Richard Roshak is offline
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Plumbing/venting
This sink and drain are located in a finished basement. The pipe through the rear of the cabinet is the venting pipe and the one through the bottom is the drain. I thought the vent had to be above the trap? Am I wrong?
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Old 04-11-2008, 07:59 AM
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Scott Patterson Scott Patterson is online now
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Re: Plumbing/venting
Quote:
Originally Posted by Richard Roshak View Post
This sink and drain are located in a finished basement. The pipe through the rear of the cabinet is the venting pipe and the one through the bottom is the drain. I thought the vent had to be above the trap? Am I wrong?
Rich
It is all wrong. You should not have a vent opening below the trap weir, except on a toilet.
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Old 04-12-2008, 12:44 PM
Markus Keller Markus Keller is offline
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Re: Plumbing/venting
It is soooo wrong. Scott is right.
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Old 04-12-2008, 01:34 PM
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Michael Larson Michael Larson is online now
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Re: Plumbing/venting
Quote:
Originally Posted by Scott Patterson View Post
It is all wrong. You should not have a vent opening below the trap weir, except on a toilet.
Here is a diagram of what Scott is saying.

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Old 04-12-2008, 07:19 PM
Joshua Hardesty Joshua Hardesty is offline
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Re: Plumbing/venting
Now I believe a vent through the roof is always preferred but haven't they heard of an AAV? It's like these people know enough to try to vent it but absolutely nothing beyond that.
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