Drip from water connection when not connected

[2andaRescue]

With the temps dropping below freezing I am beginning to notice that there is an icicle slowly growing from my city water connection/tank fill box. After further investigation it appears there is a slight drip coming from the city water connection.

Like I said, the temps are below freezing so I have only running off the water tank and filling my tank every so often for the last few weeks. How can there be any water coming from the city connection? A check valve somewhere that is going bad? I live fulltime in my 35' 1995 GS Sun Voyager if that helps any.

[rgvtexan]

A check valve somewhere that is going bad. That's a good bet.
Not familiar with your unit. a photo of the fill may help.
Some times just sticking a pencil into the fill valve and wiggling, pushing will allow the checkvalve to reseat

[alank]

Normally there is a check valve at the city connection that keeps your coach pump from being able to push water back into the city water supply and contaminate it if you leave your hose hooked up. That would be the one most likely leaking.

[georgelesley]

When our city water connection started leaking on a trip I put a winterizing blow out plug in until I could install a new city water connection. That stopped the leak temporarily.

[Woodchopper]

Originally Posted by alank

Normally there is a check valve at the city connection that keeps your coach pump from being able to push water back into the city water supply and contaminate it if you leave your hose hooked up. That would be the one most likely leaking.

Here is a pic of the check valve in my water entry hose connection.

CHECK VALVE in WATER ENTRY

Normally that check valve is covered by, (hidden behind), a removable screen.

WATER ENTRY SCREEN

[F76Marion]

The check valve in our city water connection failed mid-excursion some years back. I stopped in a hardware store and bought a house thread plug....
Problem solved.

Frank

[GrampaDennis]

At Home Depot, I bought a bronze 45 degree angle fitting with a shutoff. It is threaded for hose fittings. I found it in the garden hose department. I don't know if you can still get the bronze ones, but you can probably find the equivalent in plastic.

I was able to get my check valve to reseat and work better, but I like the security of this shutoff and the 45 degree angle works better than horizontal for my hose hookup. I have kept it on ever since I bought it.

[kb9tf]

Ours leaked on a trip this fall and pumped out the whole water tank when we used the pump to flush. I made up a plug also and put it in when we travel. I can't change out the check valve without a major operation. The plug works fine.

[Old-Biscuit]

3/4" garden hose thread.......PVC plug.