Forum Discussion

Mike_and_Kathy_'s avatar
Mike_and_Kathy_
Explorer
Oct 19, 2013

What is making my propane regulators leak?

I have a new 2013 Thor Challenger 37DT that I bought in mid-August. The dealer had it on it's sales lot for about 8 months. I have had the propane regulator replaced twice in that time for leaks in regulator. Now I smell propane again at the regulator and the regulator is all frosted over. Temp outside is in the lower 60's.

What could be making the new propane regulators leak and why is the third one frosted over? Three regulators leaking in 2 months has got to be more than a coincidence. Could there be a problem with the propane in the tank that is making the regulators leak? It has a two stage regulator.
  • doxiemom11's avatar
    doxiemom11
    Explorer II
    Oct 20, 2013
    We got a defective regulator that leaked in a joint that had nothing to do with being tightened. Took it back - same thing on replacement. Went to a different store, got a different brand and no problem. The defect was in a factory joint.
  • Chris_Bryant's avatar
    Chris_Bryant
    Explorer II
    Oct 20, 2013
    dougrainer wrote:
    The usual cause of a leaking LP regulator is just one thing----Liquid LP gets into the regulator.
    1. Overfilling the LP tank even tho it has a Auto cut off and running down the road with the tank completely full with the valve open will allow the Liquid LP to slosh into the pick up tube.
    2. Depending on the tank, the pick up tube may be welded on in the wrong place and will allow Liquid LP to get to the regulator. There some Manchester ASME tanks that have this problem. Tiffin had a few and the tanks had to be replaced. After 3 regulators, the odds are you have a defective LP tank. Doug


    What he said. Frosting of the regulator in 80 degree weather means liquid is in it, period.
  • dougrainer's avatar
    dougrainer
    Nomad
    Oct 19, 2013
    The usual cause of a leaking LP regulator is just one thing----Liquid LP gets into the regulator.
    1. Overfilling the LP tank even tho it has a Auto cut off and running down the road with the tank completely full with the valve open will allow the Liquid LP to slosh into the pick up tube.
    2. Depending on the tank, the pick up tube may be welded on in the wrong place and will allow Liquid LP to get to the regulator. There some Manchester ASME tanks that have this problem. Tiffin had a few and the tanks had to be replaced. After 3 regulators, the odds are you have a defective LP tank. Doug
  • enblethen's avatar
    enblethen
    Nomad
    Oct 19, 2013
    It could be the model of the regulator. Look closely at the regulator, there should be a vent on the first larger portion of the unit. It should be facing down so the gas or what ever will escape down.
    MHs normally use a horizontal regulator
    Vertical regulator

    Horizontal regulator

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