Strange happenings. hook up water the normal way. back in the engine compartment and to a faucet, and guess what? Can't get water past water heater, even after removing the check valve. Tried several times.
Does the check valve consist of a mushroom shaped piece, a spring, and a small pin that holds the spring on? Or has another part proceeded up in the pvc? To the point where my lines is blocked?
I have thought about back pressuring the line with air from up by the tank fill shutoff, but don't want to break a line.
Right now I can fill the tank thru the overflow and everything flows as they should by using the 12V pump.
Is there more to the backflow preventer than I listed above? Maybe something that traversed up the line?
Desperate for help.
On ours the mushroom piece has a stem on it. The spring has a washer and then a keeper that holds them on the stem. Sorry that I don't have any pics. Ours may be different than yours due to we have changed ours out a couple of times.
Mike
Did the fill valve feel funky when you opened it, sometimes gate valve stems can pull out and leave the gate frozen in place. Whenever possible replace a gate valve with a ball valve.
Got the problem fixed while up at Jim Hogg!!
Opened the little compartment up front where the two valves are that control the fresh water in and drain. I took the fill valve off and hooked up the water supply hose to the line and "backflushed" the line. Got lots of calcium/lime chunks out--into a sock I put over the line end.
I put a new backflow preventer on as the old one had come apart. I think my pressure regulator didn't like the water pressure at the CG as it restricted the flow rate after I reinstalled it. It wasn't the problem of no water thru, as I had it out while diagnosing the problem.
Many thanks to John44 for his aid/suggestions, and look forward to visiting with him & his wife now that we are down here at Seawind RV Resort on Baffin Bay (SE of Kingsville, TX) . Real nice RV resort, and quiet!! Hopefully it will warm up a bit.