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Old 02-15-2007, 01:02 AM   #16
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The vent for a 2" trap can be up to 5 feet away from the trap and be legal. The drain that's there now (hopefully) has a vent tied to it somewhere...what he means is that with any luck it's within ONE foot of the current location, so moving the drain would be as simple as...cutting the existing pipe somewhere then: original---coupler---4 feet of pipe---coupler---original. As long as you're draining 1/4" per foot of run, you're good. You need to find out where the existing vent is first.


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Old 02-15-2007, 05:27 AM   #17
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What Ron means is that if you have a 2" drain trap it must be vented within 5' of the trap. A vent is a way of getting air into the drain line so it drains properly. They can be a pipe running through the roof or an air admittance valve. These can be place in the basement and only allow air to come into the pipe and will close if water hits it.
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Old 02-15-2007, 07:31 AM   #18
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Correct, the 2" trap and 2" drain from trap can run up to 5' before it needs to connect to it's vent.

You say laundry tub, most laundry tubs will have a 1-1/2" trap and arm, are you sure what you see is 2"?

If it is 1-1/2" then distance to vent will be shorter, 3'6" according to UPC Code.

Post a picture.


Fix it right the first time, so you won't have to fix it a 2nd time.

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