Originally Posted by john mcneely
What is a B&B made valve and where is it?
It's not good practice when talking about RVs to say your _______ is located here or there because it seems no two are necessarily built the same.
That said, I've seen
these black tank flush vacuum breaker/anti-reversing valves located in the bathroom sink cabinet and ...
them located in the wall behind the shower enclosure (that's where mine is).