loop vent
Posted by Mark on December 25, 19100 at 01:43:41:
In a response to a previous question, I became aware that there are 3 ways to install a loop vent. I know of only one way: from the standard sanitary tee in the wall a vent pipe connects into the top and goes up as high as it can and then loops around with a 45, 90, and 45 bringing it down through the floor where another sanitary tee (or combo wye) connects in to allow for a vent pipe to join the side inlet of that tee and from the bottom of that tee a pipe continues down and over to join up with the drain which extends down from the bottom of the first sanitary tee.What are the other 2 possibilities?

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