I installed my new pressure reducing valve which is included with a new city water intake yesterday. My old one had a split in it, probably from freezing. I noticed another white plastic pipe, the same size as Sportsmobile uses for their water line work. It terminates near the back of the where the city water fill cuts through. This mystery pipe ends at an elbow with just a short half inch stub coming off the other side of the elbow. It seems to run along the inside of a frame member. I tried tugging on it but I couldn't see anything move downstream or upstream from it. Is this a vent for the gray water tank or a vent for something else? Thanks. oclv
In mine there is a white tube but it exits straight down about 1" below the floor and is just a raw cut. It is the drain for the hot water sink line, since there is no good lower point I guess to drain for winter.