Vacuum breaker

[Henry4854]

Where is the anti vacuum valve for the flush located 2016 Sandpipper

[WFD]

Not sure about your particular unit but often they are found up under your bathroom sink, close to where water pipes are hooked into your tap, you may have to reach up there to feel or see it.

[itat]

If you're talking about the one on the Black tank flush line, it should be in a cabinet on the back side of where the port is located outside. Typically the line goes up from the port to the anti-vacuum valve and then back down to the black tank. The line doesn't need to be winterized because the water flows in either direction from the valve and exits the system by gravity.

Here is a couple pics of how my Rockwood was plumbed inside the bottom half of a cabinet. The valve broke on the previous owner and he replaced it with a 90 deg. bend. I use an external backflow preventer on my dedicated flushing hose.

[youroo]

In regards to winterizing the black tank flush system unless you know without a doubt that your nozzle area will NOT hold water and freeze, I would run anti-freeze throughout the BTR! Youroo! !

[itat]

I know without a doubt that I didn't winterize mine the first winter after I bought this trailer (this is my first with a BTR) and it doesn't spew water when I use the BTR now. Maybe I'm just lucky? Or, if it did crack, it cracked inside the tank.

[head gamez]

Originally Posted by itat

If you're talking about the one on the Black tank flush line, it should be in a cabinet on the back side of where the port is located outside. Typically the line goes up from the port to the anti-vacuum valve and then back down to the black tank. The line doesn't need to be winterized because the water flows in either direction from the valve and exits the system by gravity.

Here is a couple pics of how my Rockwood was plumbed inside the bottom half of a cabinet. The valve broke on the previous owner and he replaced it with a 90 deg. bend. I use an external backflow preventer on my dedicated flushing hose.

Thanks for that. I was flushing the second black tank on mine before leaving the camp ground this week and it stopped "taking water" (as noted by the pressure gauge on my regulator). I said screw it and put it on a list to check before our next trip. After reading the OP and your post, I. Believe this could be it.




2016 Sandpiper 376BHOK
2500HD Chevrolet

Sent from my iPhone using Forest River Forums

[head gamez]

Originally Posted by youroo

In regards to winterizing the black tank flush system unless you know without a doubt that your nozzle area will NOT hold water and freeze, I would run anti-freeze throughout the BTR! Youroo! !

Curious.... how do you get antifreeze into it?

I guess you could run it through the system and then use the spray port (outdoor "shower") located in the docking station to put it in?

Or run a separate line off the outlet of the pump straight to it?


2016 Sandpiper 376BHOK
2500HD Chevrolet

Sent from my iPhone using Forest River Forums

[youroo]

Originally Posted by head gamez

Curious.... how do you get antifreeze into it?

I guess you could run it through the system and then use the spray port (outdoor "shower") located in the docking station to put it in?

Or run a separate line off the outlet of the pump straight to it?


2016 Sandpiper 376BHOK
2500HD Chevrolet

Sent from my iPhone using Forest River Forums

Yes use OS shower, run H&C and done deal! Youroo! !

[itat]

Interesting. As you can see from my pictures in Post #3 my outside shower is not in a docking station but the typical plastic outside shower faucet with the flimsy lockable cover like this one.


Can you disconnect the shower hose from that faucet and connect a hose between it and the BTF port?

[5picker]

Originally Posted by head gamez

Curious.... how do you get antifreeze into it?

I guess you could run it through the system and then use the spray port (outdoor "shower") located in the docking station to put it in?

Or run a separate line off the outlet of the pump straight to it?

I put 1/4 turn valves on my low point drains that have garden hose connections.
I have a 10' hose that I screw onto one of the LPD, and 'push' the antifreeze into the BTF from there. They come in handy for tons of other things too!

You could also fill a short garden hose with antifreeze and 'push' it in with a little compressed air.

[youroo]

Originally Posted by itat

Interesting. As you can see from my pictures in Post #3 my outside shower is not in a docking station but the typical plastic outside shower faucet with the flimsy lockable cover like this one.
Attachment 127614

Can you disconnect the shower hose from that faucet and connect a hose between it and the BTF port?

Your shower box is the same as ours, I removed the shower head and added a Quick Disconnect "Garden Hose Type " brass same as all my FW hose ends and filter! Everything from the C/G supply to the RV is the same brass"Quick Disconnect,makes life much easier! Youroo! !

[itat]

Originally Posted by youroo

Your shower box is the same as ours, I removed the shower head and added a Quick Disconnect "Garden Hose Type " brass same as all my FW hose ends and filter! Everything from the C/G supply to the RV is the same brass"Quick Disconnect,makes life much easier! Youroo! !

Thanks, Youroo. I just ordered some of the Camco brass quick connects.