Servicing waste gate valves ( Greay and black water valves)

It is exactly as it appears to be. I have done the replacement. I dump the tank(s) and then tilt the coach toward the opposite side to eliminate any possible of dripping. There does need to be a bit of room for one of the 2 pipe connections to move but only slightly. Just take your time and replace the entire fitting with new gaskets as well. It all comes out and the identical parts go back in. It's really pretty simple. Here I will say, "In most cases" just to keep the flamers at bay.