Can anyone tell me what this is

[alain h]

Is the valve under a certain pressure to let the water in
Been to 2 different campground now and nothing would come out or in for the black water flush
At the dealer the other day they hook up the hose and it work ???????
It the valve under a certain psi before it opens

[ColoradoRick]

Originally Posted by alain h

Is the valve under a certain pressure to let the water in
Been to 2 different campground now and nothing would come out or in for the black water flush
At the dealer the other day they hook up the hose and it work ???????
It the valve under a certain psi before it opens

I think it does need a certain amount of pressure. Do you use a pressure regulator while camping? (It's a good idea to protect your plumbing as some have WAY too much pressure.)


I just use one of these, keeps PSI 40-50 but I remove it when I hook up to the black tank flush...

[alain h]

I do not use a pressure regulator