Double fixture fitting - sink and standpipe


Old 01-19-14, 06:09 AM
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Double fixture fitting - sink and standpipe

I am renovating a room in which I plan to place a washing machine with a sink next to it. I'm curious if it is possible for these two fixtures to share a vent through a double fixture fitting?

The alternative would probably be something like this:

Input is appreciated!
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Old 01-19-14, 06:35 AM
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Your second option is definitely doable. I believe your first option is allowable as well, but I know there are a lot of rules around double-tees, so wait for one of the pros to chime in.
Old 01-19-14, 07:05 AM
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Yes but you have to make sure its a double fixture fitting and not a double san tee...

4835-B - Double Fixture Tee Hub - PVC DWV

If you use a double san tee it changes the trap weir height to the vent and you will get siphoning of the traps...
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