1L243
Nov 24, 2015Explorer II
New TT Black Tank Rinse Blocked
Trailer is a 2016 Keystone Premier 19fbpr. I was trying to winterize my trailer and when I came to blowing out the black tank rinse line. it was blocked no air or water would go in. This valve is located in the bathroom closet. The flow direction goes from the black tank rinse outlet to the black tank. That is way they have it plumbed. If I blow in the valve part (where my fingers are) in the direction of flow it shuts off by pushing up on a float. If I suck on it I get air. If I blow on the other end of the valve it's blocked?
I really can't tell if this valve is supposed to be a siphon valve or a back flow valve. It's only function is on the black tank rinse line. If its back flow valve shouldn't the direction of flow be from the black tank to the rinse outlet? But even if it was the valve is blocked in that direction as well.
The trailer is new and has not been used yet.


I really can't tell if this valve is supposed to be a siphon valve or a back flow valve. It's only function is on the black tank rinse line. If its back flow valve shouldn't the direction of flow be from the black tank to the rinse outlet? But even if it was the valve is blocked in that direction as well.
The trailer is new and has not been used yet.


