We recently moved in to our travel trailer, and living in one is new to us. Well the black tank started stinking too much for our comfort, so I went out and bought a vent fan thing that goes on top to suck the fumes out of the black tank.
When I got up to the roof, the little black vent tube sticking through the roof spun easily in it's place. That didn't seem right to me, I figured it should stay still. So I lifted it, and it came right out!?!
I then stuck a broom handle in the hole, and there is plywood there! I know this trailer had damage in the past, and I'm OK with that.
I just want to know how to remedy the non-venting black tank. Should I just get a hole saw and make a hole where it belongs and see if the black tank vent tube is there?
You should check the black tank to see if there's a vent pipe leaving it. Some manufacturers use separate sections of vent pipe within the walls, and they can separate. As suggested, try to find an access point inside the trailer to see what's there. Unfortunately, I can't see enough in your pictures to guess what's there - if anything.
When I was in Code Enforcement School, the instructor had slides of a job that he had been on where the contractor, rushing to get a Certificate of Occupancy to open a new public school on September 1 had just stuck the sprinkler heads through the drop ceilings to make it look to the casual observer that the school was fully sprinklered..... You never know where workmen will cheat a few steps to save time, money, or effort....
If fthere is no pipe for the black is there one for the gray? You might as welol do both and save having to do it later. This may sound stupid but if there is a gray pipe they may have joined the black and gray in the wall and run them together. JMHO.
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Judging by the picture and the angled cut in that short pipe, It is very possible you have stumbled across the vent for the rafters in the roof. Mine has that.
I would bet there is another vent somewhere for the black tank.
* This post was
edited 08/07/12 05:26pm by Ex-Tech *
I wouldn't recommend starting to cut up your roof without knowing what you're going to find. Look around in your bathroom first and see if you can't find a vent tube so you at least know where it might be. Usually you can find evidence of one under the bathroom sink, in a linen closet etc.
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You obviously need to get a much more powerful exhaust fan for that set up
Do you have access to the wall where the pipe should be running? I'd open that up first....see if you can see down to the tank and vent pipe. As someone mentioned, maybe the vent pipe was started, but not completed. Then, it will be a simple case of cutting the proper size hole and running the pipe properly!
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