Originally Posted by tombucz
My trailer is set up in a seasonal rv park. I don't tow it. For water I connect a hose from park water valve to city water inlet on my trailer.
The check valve in city water inlet was going bad. When winterizing last year the spring and keeper flew off it. I tried pumping antifreeze into the city water inlet with a hand pump and it wouldn't go.
I'll be opening my trailer at the end of this month. I'm thinking water from hose won't get past the defective check valve since the antifreeze didn't. I don't need the check valve because I can put a plug in city water inlet when I winterize. A simple solution is to remove the check valve without removing the city water inlet from the trailer. How should I do this? Do I drill it out or what? (Yes, I thought about replacing the city water inlet, but it's really not necessary.)
You may be able to remove the check valve without removing the valve assembly, but it will probably be difficult. Don't drill it out - you don't want the debris in your water lines.
Disconnect the water line from the back of the valve. There is a small plastic disk inside the valve you have to pop out. With that out, you can remove the check valve plunger and spring. Reconnect the water line and you will be back in business.
If you have to remove the assembly to get at the back, you might as well replace the valve assembly
. They're not that expensive, and it will avoid having to plug the inlet any time you want to use the pump.
FWIW, the easiest way to get antifreeze into the system is to disconnect the water line from the pump inlet. Get a piece of plastic tubing and fasten it to a 1/2" female pipe connector. Connect the tubing to the pump inlet, put the free end into a jug of RV antifreeze and use the pump to draw the antifreeze into the system. They also sell a winterizing kit
that comes with a 3-way valve and tubing with the pipe connector so you don't have to disconnect the pump inlet every time you want to winterize.