Plumbing Vent Pipe

by Cory
(Bullhead City Arizona Untied States)

Question: I have replaced my black tank vent pipe cap on the roof and I noticed that the 1 1/2 pipe that connects from the tank through the wall to the roof cap was loose and I could pull up on it, then re-install it to the tank. There is no access hole to see the pipe inserted into the black tank so I dont know if its even really installed correctly. My question is should that pipe be glued in to the tank or is it okay to be loose fitting?

Robbie: The Pipe should be secured into the tank. You want all odors to vent out the top of the roof. You also don't want liquid leaking out on the top of the tank should you over fill it or drive with the tank almost full. Getting the pipe back secured as it should be can be very tricky. See if you can remove the pipe and use a flashlight to see that the hole is lined up on the tank and be sure the pipe wasn't snapped out of the tank leaving you nothing to glue the pipe into. Worst case is the tank would have to be removed to repair the vent hole to except the pipe.

Thanks for the Question Good Luck,

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Robbie Warford, San Diego RV Repair

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