Quick disconnect water pipe under sink.

[varmonter]

2022 28dbs has a quick disconnect
Water pipe under the bathroom sink.
Is this for one of those black tank
Flusher things??

[litzdog911]

Originally Posted by varmonter

2022 28dbs has a quick disconnect
Water pipe under the bathroom sink.
Is this for one of those black tank
Flusher things??

Not sure what you mean. Can you post a photo?

In most ORV trailers you'll find the black tank flush check valve under the bathroom sink.

[varmonter]

Originally Posted by litzdog911

Not sure what you mean. Can you post a photo?

In most ORV trailers you'll find the black tank flush check valve under the bathroom sink.

Well maybe that's what it is..because I noticed it while the bt flush was running because it was vibrating...what is the check valves function..?? It looked like a quick disconnect fitting...but now that I look again I'd say its not.. the copper/brass thing in the pic.

[litzdog911]

Hard to tell from that photo, but pretty sure that's your black tank flush anti-siphon air admittance valve. Ours is plastic.

[Old-Biscuit]

Picture is sideways

Brass Anti-Siphon vacuum breaker check valve device on the Black Tank Flush System
(also Black or clear plastic)

Water supply comes in via bottom pipe/lifts a disc up sealing off the AIR Cap and then flows out via side pipe down to the spray nozzle in sidewall of black tank

Turn water OFF....disc drops allowing AIR to come into the tank side of device and closes off the supply side of device
Prevents cross contamination of waste water into potable water system and breaks any vacuum so no siphoning action can occur

That is what it is designed for and required by 'standards' for RV MFGs

What they do in reality is provide a means of water flooding into RV (disc not closing ...water flows out top cap) and Black Tank STINK coming back into RV (check valve failure)

Waste tanks..........fill them/dump them/add few gallons back in to keep tank-stuff wet----repeat
They are holding tanks and get dirty very next time you /pee/poop

Waste of good water flushing a waste tank.

[varmonter]

Originally Posted by Old-Biscuit

Picture is sideways

Brass Anti-Siphon vacuum breaker check valve device on the Black Tank Flush System
(also Black or clear plastic)

Water supply comes in via bottom pipe/lifts a disc up sealing off the AIR Cap and then flows out via side pipe down to the spray nozzle in sidewall of black tank

Turn water OFF....disc drops allowing AIR to come into the tank side of device and closes off the supply side of device
Prevents cross contamination of waste water into potable water system and breaks any vacuum so no siphoning action can occur

That is what it is designed for and required by 'standards' for RV MFGs

What they do in reality is provide a means of water flooding into RV (disc not closing ...water flows out top cap) and Black Tank STINK coming back into RV (check valve failure)

Waste tanks..........fill them/dump them/add few gallons back in to keep tank-stuff wet----repeat
They are holding tanks and get dirty very next time you /pee/poop

Waste of good water flushing a waste tank.

Thanks ..I guess I always thought that was located right after the hose inlet on the outside of the rv..
.. And yes sorry..the pic is sideways..it was right side up when I uploaded it..??