Gray tank venting problem
Gray tank vent problem: A couple of weeks ago water backed up in the shower while wife was showering , when I returned an hour later I looked in shower with 3" of water in it I said no big deal tank...
Forum Discussion
Bobbo wrote:
If that was the problem, I would think that when you dump the grey tank, there would be enough suction to suck the water out of the p-trap.
Rig a collar sealing the top of the roof vent with an air compressor hose inserted. WITH THE DRAIN VALVE OPEN turn on the compressor and blow out the vent like you would blow out water lines to winterize.
I agree except, I would use the output of a shop vac instead of an air compressor.
