sooo finished going through all electrical and decided to start on water system today. Found out that the po had forgotten to winterize the traps on the shower and sink, which I repaired this afternoon with some new pipe. I discovered another leak, out the back side of the thetford valve.
I've never had a trailer with just a black tank, but have seen the portable tanks. All our pipes except one (which appears to be attached to the bathroom vent above floor height) go into the tank, however there was a thetford valve right off the tank itself, followed by and adaptor with a "t" that goes to the vent, then out to the side of the frame with another thetford valve. The only thing between these two valves is that line that appears to be a vent pipe, though I suppose it could be coming over from the kitchen, I can't see around the toilet well enough to know for sure. Is this second valve, closest to the tank necessary or can I eliminate it? Just seams like one more set of seals to fail (its the reason I have it apart, as it was dripping around the outside o-ring that seats it to the tank.
On a second note, does anyone know the tank capacity on a 69 tradewind for the waste tank?