I've done some digging in the archives and have not stumbled on to discussion on this inlet line so, I'm gonna ask the forum. My question is in regard to the polyethelyne "black-water flush line coming into the RV from the back of the docking station. I'm trying to take care of all of the drips we've found in mostly PEX tubing connectors after initially picking up our BH3455RL this past fall.
The leak I'm currently working on is in PEX tubing that attaches on to the piece of polyethelyne hose coming in from the black water flush connector at the docking station. The PEX tubing carrying the flush water (in a blue PEX hose) up from the basement overhead and up about 3 feet into the back side of the shower wall, makes a loop up in the vacinity of the circular inspection opening by the shower on/off valve, where it connects to what appears to be a vacuum breaker type plastic device. Coming back out of the blak round device, the factory has put on a red PEX tube that drops back down the same 3 feet and back down to the basement area. At that point, it elbows and travels over to the starboard side of the utility area in the basement, where it connects back into the polyethelyne/braided hose and I presume heads over to the black water tank for the purpose of flushing.
My question is: is this small round device a vacuum breaker in the black water flush line? Would it be for the purpose of not allowing any tainted water to back out of the black water tank and out through the inlet inlet black-water hookup connector in the docking station? I'm not finding any kind of plumbing diagram so as to identify this small round black plastic device. Attached is the best picture I could manage to get of this black device. thanx for responses ~ gebills.
The leak I'm currently working on is in PEX tubing that attaches on to the piece of polyethelyne hose coming in from the black water flush connector at the docking station. The PEX tubing carrying the flush water (in a blue PEX hose) up from the basement overhead and up about 3 feet into the back side of the shower wall, makes a loop up in the vacinity of the circular inspection opening by the shower on/off valve, where it connects to what appears to be a vacuum breaker type plastic device. Coming back out of the blak round device, the factory has put on a red PEX tube that drops back down the same 3 feet and back down to the basement area. At that point, it elbows and travels over to the starboard side of the utility area in the basement, where it connects back into the polyethelyne/braided hose and I presume heads over to the black water tank for the purpose of flushing.
My question is: is this small round device a vacuum breaker in the black water flush line? Would it be for the purpose of not allowing any tainted water to back out of the black water tank and out through the inlet inlet black-water hookup connector in the docking station? I'm not finding any kind of plumbing diagram so as to identify this small round black plastic device. Attached is the best picture I could manage to get of this black device. thanx for responses ~ gebills.