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Wsm239
Ontario
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Joined: 10/30/2022
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https://applianceanalysts.com/rv-propane-tank-size/
Having difficulty posting a picture. This link shows the port I am referring to on the bottom of a built in tank.
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dougrainer
Carrolton, Texas
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Joined: 06/11/2007
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DO NOT fill the tank Completely, until you find the leak. Just pump a gallon or 2. Then use soapy water around ALL the fittings on the tank. The tank should have more than enough clearance to cawl under it to soak the bottom fittings. That bottom fitting is usually the tank valve relief. It SHOULD reset after it trips, but it may now be faulty. I would replace it if that is where the soapy water bubbles. If you only put a gallon or so in the tank, then bleeding it off by emptying the tank will not take long. The tank has to be empty of liquid and vapor to replace that valve. I would highly advise you to have a LP company replace the valve after you verify the problem. Doug
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Dutch_12078
Winters south, summers north
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Joined: 10/07/2008
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After seeing the sample photo, as Doug said, it's the Safety Relief Valve. Below is a picture of what one typically looks like before it has tripped.
![[image]](https://i.imgur.com/eefBMcbl.jpg size=350)
Dutch
2001 GBM Landau 34' Class A
F53 chassis, Triton V10, TST TPMS
Bigfoot Automatic Leveling System
2011 Toyota RAV4 4WD/Remco pump
ReadyBrute Elite tow bar/Blue Ox baseplate
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Wsm239
Ontario
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Joined: 10/30/2022
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dougrainer wrote:DO NOT fill the tank Completely, until you find the leak. Just pump a gallon or 2. Then use soapy water around ALL the fittings on the tank. The tank should have more than enough clearance to cawl under it to soak the bottom fittings. That bottom fitting is usually the tank valve relief. It SHOULD reset after it trips, but it may now be faulty. I would replace it if that is where the soapy water bubbles. If you only put a gallon or so in the tank, then bleeding it off by emptying the tank will not take long. The tank has to be empty of liquid and vapor to replace that valve. I would highly advise you to have a LP company replace the valve after you verify the problem. Doug
Thanks, I did try the soapy water spray but no bubbles anywhere. I will for sure be hiring a licensed propane person to make any changes or repairs.
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Wsm239
Ontario
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Dutch_12078 wrote:After seeing the sample photo, as Doug said, it's the Safety Relief Valve. Below is a picture of what one typically looks like before it has tripped.
Thanks, this is very helpful. Mine does not have the red insert that is shown on yours.
It is possible the tank was overfilled. But would it empty completely if that was the case? Or would it just empty just enough to bring it to "normal"?
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Dutch_12078
Winters south, summers north
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Wsm239 wrote:Dutch_12078 wrote:After seeing the sample photo, as Doug said, it's the Safety Relief Valve. Below is a picture of what one typically looks like before it has tripped.
Thanks, this is very helpful. Mine does not have the red insert that is shown on yours.
It is possible the tank was overfilled. But would it empty completely if that was the case? Or would it just empty just enough to bring it to "normal"?
Doug might have the answer to that. I haven't experienced one tripping yet. It shouldn't be possible to overfill the tank if everything is working right, but I suppose it's possible the overfill prevention device valve has failed open. A properly trained refiller should be using the Fixed Liquid Level Gauge, sometimes referred as the "vent" or "spitter valve", to determine when the tank is filled to the proper 80% of the rated water capacity regardless of whether the OPD works or not.
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