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Old 10-07-2012, 12:07 PM   #1
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LPG tank valve leaking

I just bought my coach in May, so I haven't had it in any cool weather before. Today it's in the 40's so I decided to test the furnace for longer than I did on the PDI. When I turned on the LPG valve at the tank the valve was visibly and audibly leaking (valve, not regulator), to the point that the knob iced up. After a minute or so it stopped leaking, so I went ahead and fired up the furnace. After running the furnace for about 30 minutes I checked the tank valve again and everything seems fine.

Is it possible that the valve seals had just contracted in the cooler weather and took a few minutes to expand, or is this something it needs to go back to the dealer for?
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Old 10-07-2012, 02:51 PM   #2
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The valve may have to be Fully OPEN or closed to seal properly.
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Old 10-08-2012, 02:45 PM   #3
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The valve may have to be Fully OPEN or closed to seal properly.
Siggy
X2 You may have a slight leak while opening and closing the tank valve, You should seat the valve either completely closed or completely open.
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Old 10-08-2012, 02:56 PM   #4
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It was leaking at full open, but stopped within 30 seconds. Since then, I have not been able to duplicate. No leaks anywhere between fully closed and fully open. Really wondering if it was seal shrinkage due to the first cool weather that the valve has ever been exposed to.
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Old 10-08-2012, 03:01 PM   #5
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This is normal IMHO when the LP has been turned off for a period of time.

Mine always expels some propane upon opening after sitting at the storage lot and then is sealed when fully open.

Usually has no expelling of propane upon closing after we get home.

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Old 10-08-2012, 08:51 PM   #6
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This is normal IMHO when the LP has been turned off for a period of time.

Mine always expels some propane upon opening after sitting at the storage lot and then is sealed when fully open.

Usually has no expelling of propane upon closing after we get home.

DaveS
1998 American Eagle 40EVS
Excellent! Thank you. Mine had been sitting (valve closed) for 5 weeks.
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Old 10-08-2012, 08:57 PM   #7
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When the previous posters said fully open it means to actually back seat it. Kind of like the extra twist you apply to a water valve when you are turning it off. Back seating seals the valve seat into the valve body.
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Old 10-09-2012, 06:32 PM   #8
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Get it checked. It's not worth burning up your RV.
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