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Old 04-09-2015, 09:26 AM   #1
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Watch these valves

This is a valve I removed from the cold water inlet to the water heater when de-winterizing. If you look you can see the O-ring sticking out. My first thought was that it got pushed out from high pressure. After replacing it with a new valve, it appears that it was like that when assembled. Try as I might, I couldn't get the ring to go back inside the valve. I "think" that it may not have been leaking initially, but from closing the valve to winterize and then reopening it, it probably cut the ring enough to start a leak. I suspect these valves are used on many types of RV's. Just something you might want to keep a check on.
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Old 04-09-2015, 11:22 AM   #2
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Who would ever think to look there for a leak and you would need a mirror to see it. You'd look and feel around the lines and nothing showing. Thanks for the pic..
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Old 04-09-2015, 02:32 PM   #3
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.you would need a mirror to see it.
======
That's exactly what I had to do, use a mirror. When I turned the pump on and pressurized the system, it pumped up and cut off. A few minutes later, I heard just a "burp" from the pump. About 3 minutes later, I heard it again, and I became suspect. Looked under the kitchen cabinet and saw a small puddle of water under the valves at the water heater. Didn't know which one was leaking, but I could hear a faint "hissing" noise. When I put the inspection mirror behind it, it got wet from the very fine spray that was coming out. With a closer look, I saw the O-ring sticking out. Glad it was still sitting in our driveway and not out on the road. Got to use that spare valve I had bought from our previous TT.
I repressurized the system with the pump, turned pump off for 24 hours and then flipped it back on. The pump didn't start, so apparently no more leaks. I now have a plexiglass inspection window in the panel covering the water heater so I can do routine inspections without taking the panel off.
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25 WH panel.jpg  
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Old 04-09-2015, 02:56 PM   #4
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This is a timely posting. I'm going to de-winterize my new trailer in a couple days. I'll be sure to look at this!

Thanks for posting!!!
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Old 04-11-2015, 06:13 PM   #5
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I have the same trouble but my valve was visable and I saw ir right away. How did you remove the cinch clamps? Did you cut them with side cuts.

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Old 04-11-2015, 06:21 PM   #6
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Yep, cut the crimps with diagonals. Getting the old valve off requires some twisting, but the guy at the RV store said to heat the pipe with a hair dryer and it will come out much easier. The replacement valves have compression nuts and are much better in my opinion.
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Old 04-11-2015, 06:33 PM   #7
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pex and brass

The valves I've been installing are quarter turn brass that get crimped onto the pex. Permanent fix. About $7 each. Replaced those pull and turn low point valves and added two to the outside shower to keep that area dry and freeze protected.
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