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redline 03-13-2006 07:55 AM

sink vent?
 
Is it true that if a bathroom sink is within a certain distance of the sewer drain/vent stack that the sink doesn't need a vent?

If so, then what is the distance?? (3 feet, 5 feet, 7 feet???)

Mike Swearingen 03-13-2006 09:34 AM

No that is not true. Every fixture needs a trap and a vent after it.
Mike

Scott_K 03-13-2006 08:36 PM

Are you referring to an Air admittance valve ?

Rehabber 03-13-2006 08:55 PM

In Calif the allowed distance is 2 and 1/2 feet.

jjksak 03-15-2006 08:46 AM

Can two fixtures share a common vent? I have a hot tub I want to install in my basement, and there is a utility sink with a vent attached in the basement, going up to the roof. Can I tee off the drain line for the sink with the hot tub drain and use the same vent? Both sink and tub have traps installed. Thanks.

redline 03-17-2006 07:05 AM

Quote:

Originally Posted by Mike Swearingen
No that is not true. Every fixture needs a trap and a vent after it.
Mike

what is 'wet' venting?

stan 41943 03-13-2008 03:32 PM

Quote:

Originally Posted by Scott_K (Post 9202)
Are you referring to an Air admittance valve ?

Please explain air admittance valve concept. Accepted by code?


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