B&B Model 571 Vacuum Breaker - FLOOD!

[Fatfenders]

Why is it so easy to find out these vacuum breakers are junk with a little googling after that fact?

Was at home, performing my first flush of the black tank during the Spring de-winterizing. Hooked up the hose to the black tank flush port, turned the water on and went into the trailer. I had a FLOOD coming out from under the sink, running under the couch and everywhere.

I ran to the faucet and got the water shut off, ran back in the trailer and grabbed every towel we had in the bathroom to soak up water.

Long story short, the B&B Model 571 vacuum breakers are JUNK and it doesn't take much thread reading to figure that out. Apparently, there is documentation that comes with these vacuum breakers indicating they should not be placed where access is a problem in case they leak. Thankfully I have long arms and could just reach it beyond the shelf under my sink.

Its being replaced with a brass style Watts LF288A or Cash Acme V-101. Thanks Jayco. Nice engineering...

Here's my two cents worth. IF you have a black tank flush, check for this specific part and replace it before you're flooded like I was. Thankfully, I was at home in the driveway!

[Chrislorl]

Question, What size pipe is that running to the valve? 1/4"?

[Fatfenders]

Originally Posted by Chrislorl

Question, What size pipe is that running to the valve? 1/4"?

Not sure I can answer your question specifically, however, for an "emergency" fix until the new valve arrived, I replaced the old POS valve with a 1/2" brass PEX T-Fitting and 1/2" PEX crimp bands. Based on this, I could assume my pipe is considered 1/2".

[Chrislorl]

This was an interesting post, I located mine under the bathroom sink. Not attached to anything, just wedged into the corner.
It is indeed a 1/2" input and output and a very easy item to change.
This is one of those things that for $20.00, why not.....