The HepvO valve can best be described as a waterless, streamlined alternative to a P trap. Under your vintage trailer's sink, shower or tub, this nifty invention will allow you to plumb in much tighter spaces, including with very little vertical space!
In a travel trailer, it has so many advantages over a P trap that we believe it may someday replace P traps entirely in the RV industry.
Here are the main advantages:
Unlike conventional waste traps, this valve kit does not rely on water to create a seal. Instead this waste valve kit uses a self sealing membrane which performs the same function as a water seal trap without the risk of depletion or freezing. Think of it as a one-way valve below your sink or shower.
Kit comes with everything you need for a straight or right-angle installation. At the inlet side HepvO can be installed using a 1½" threaded connection or via a slip joint connection onto tubular standard pipe using in-line adapters. At the outlet side HepvO can be installed using a 1½" threaded connection or via a slip joint connection onto 1½" tubular pipe
The inlet side of the HepvO is 1-1/2" NPSF and the outlet side is 1-1/2" NPSM.