Where's my water? Something clogged...

[Doc Vegas]

Well, the next gremlin has appeared. Actually, been around a while, but I assumed I was hooked to low-pressure systems. I just finished 5,000 miles and 10+ different RV parks. The pressure in my rig was ALWAYS terribly low. My wife just used the on-board pump and drained the tank. And, I always thought the tank took too long to refill. Google led me to articles that all suggested the screen and/or the pressure regulator. I ordered a new pressure regulator from Amazon and some screens. When I removed the old pressure regulator, it looked fine (screen was clear) and water flowed like a river when attached to my house. The new one did not flow any differently. Yikes, what's blocking it up? Just a trickle comes out of our plumbing unless we run the pump. I pulled the 90 degree next and can see something inside the line going into the rig, i am guessing it is a check valve. I pulled it lightly with my fingers but it did not come out....

Any ideas?

Thanks!

[SuperGewl]

Yep.

Get it out because it is closed. It most likely is the check valve to isolate Potable water from onboard but it is blocked. get it out and replace it.

[Old-Biscuit]

City water connection has an internal check valve (prevents water from flowing out when using pump)
They are cheap plastic junk.......plunger/spring/o-ring assembly'
O-ring gets dislodged and restricts flow

[Doc Vegas]

Thanks guys! I took pressed on it and indeed it was stuck. It seems to work now, not sure how to remove/replace it though. I just pushed on it and it "popped" and water came out. Seems "loose" now... maybe it will be fine for a while? Thanks again.

[djhinds]

I went to Camping World and asked them and they had a brass check valve to replace the cheap plastic one. It works great. About $10 as I remember.

Dave