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01-07-2017, 01:53 PM
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#1
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Member
Join Date: Mar 2015
Posts: 59
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Propane supply regulator question
So I'm prepping my trailer for our annual trip to LHC, AZ next month, and my lady reminds me of our leaky propane tank.
The WalMart AmeriGas tank leaks out the regulator when fully open and the supply is switched to it. Switch to the other tank fully open and it supplies the trailer just fine no leaks out the regulator or anywhere else.
Is the AmeriGas over pressured? Or is something wrong on that side of the regulator?
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01-07-2017, 01:56 PM
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#2
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Senior Member
Country Coach Owners Club Solo Rvers Club iRV2 No Limits Club
Join Date: May 2011
Location: Vancouver, WA
Posts: 37,725
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Regulator, no way to "over-pressurize" the tanks due to the relief valve.
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2009 45' Magna 630 w/Cummins ISX 650 HP/1950 Lbs Ft, HWH Active Air
Charter Good Sam Lifetime Member, FMCA,
RV'ing since 1957, NRA Benefactor Life, towing '21 Jeep JLU Rubicon Ecodiesel
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01-07-2017, 01:59 PM
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#3
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Member
Join Date: Mar 2015
Posts: 59
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Quote:
Originally Posted by Mr_D
Regulator, no way to "over-pressurize" the tanks due to the relief valve.
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Thats what I was pretty sure of. Its been more than 10 years since I was certified to refill propane tanks. But it doesnt make sense to me why 1 tank leaks and the other doesn't. Both are Y in to the same regulator. If the reg was bad I would think both would leak.
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01-07-2017, 03:00 PM
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#4
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Senior Member
Join Date: Jul 2014
Posts: 35,444
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Maybe the tank that doesn't leak is near empty ?
The pressure drops off, when near empty.
Pick each one up. A full tank holds 20 lbs of gas.
Exchange tanks hold 15 lbs, but that's a different story.
Besides,regulators shouldn't leak in any situation.
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01-07-2017, 08:20 PM
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#5
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Member
Join Date: Mar 2015
Posts: 59
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Quote:
Originally Posted by twinboat
Maybe the tank that doesn't leak is near empty ?
The pressure drops off, when near empty.
Pick each one up. A full tank holds 20 lbs of gas.
Exchange tanks hold 15 lbs, but that's a different story.
Besides,regulators shouldn't leak in any situation.
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Both were brand new full last year. I extanged them just before the trip. 1 at Wal-Mart 1 at a gas station.
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01-07-2017, 08:22 PM
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#6
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Member
Join Date: Mar 2015
Posts: 59
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Maybe for better idea this is where is sound and smells like its coming from
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01-07-2017, 08:54 PM
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#7
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Senior Member
Join Date: Nov 2015
Posts: 26,846
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What that red arrow is pointing to is the VENT for the 2nd stage of the regulator.
IF it is leaking there it wouldn't matter which cylinder was in service (tanks are used in motorhomes)
Propane only comes out that vent when diaphragm is cracked/leaking (1st stage has one also ----- very small pin hole vent)
The other common place for leaks is the pigtail hose (from cylinder to regulator)
Get a Cavagna Auto Changeover Regulator and couple of new pigtail hoses (ASME GREEN nut)
https://www.amazon.com/Cavagna-890-0.../dp/B00HTN3HRY
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Dodge 3500 w/Tractor Motor
US NAVY---USS Decatur DDG-31
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01-08-2017, 12:23 PM
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#8
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Senior Member
Damon Owners Club Workhorse Chassis Owner
Join Date: Mar 2009
Posts: 24,024
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RV's use two types of dual tank systems. I've seen both. One is a straight "T" (Likely with check valves) so you open one tank let it run dry, then close it and open the other
The other type, Which I THINK you have, you have a selector knob or paddle, Turn it one way and that tank is PRIMARY, if it runs dry the gauge shows RED and the other tank supplies, Turn it to the other tank and the gauge goes GREEN while you haul the empty off to be refilled, then when the other runs dry, turn back, and.. Never ending cycle...
If it is leaking AT THE REGULATOR. and only on one tank, The change over valve is defective and needs replacement.
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Home is where I park it!
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01-08-2017, 12:30 PM
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#9
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Senior Member
Jayco Owners Club
Join Date: Dec 2016
Location: Sunny FLA
Posts: 104
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What wa8yxm said is correct. the change over valve above the regulator is leaking if one side leaks and the other does not.
So you need a new change over regulator.
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Take Care And Have Fun!
2017 Jayco Seismic 4212
2015 Chevy High Country 3500 DRW
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01-08-2017, 07:33 PM
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#10
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Member
Join Date: Mar 2015
Posts: 59
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Any recommendations for replacement? Or even upgraded replacement?
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01-08-2017, 08:16 PM
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#11
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Senior Member
Join Date: Nov 2015
Posts: 26,846
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Quote:
Originally Posted by 82ndCowboy
What wa8yxm said is correct. the change over valve above the regulator is leaking if one side leaks and the other does not.
So you need a new change over regulator.
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Auto changeover AND regulator are ONE unit.........
2nd stage of the 2 stage regulator is leaking.
__________________
I took my Medication today. HAVE YOU?
Dodge 3500 w/Tractor Motor
US NAVY---USS Decatur DDG-31
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01-16-2017, 06:27 AM
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#12
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Member
Join Date: Mar 2015
Posts: 59
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Camco a decent replacement or this the cavagna a better replacement?
Sent from my LG-H918 using Tapatalk
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01-16-2017, 06:44 AM
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#13
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Senior Member
Newmar Owners Club Winnebago Owners Club Freightliner Owners Club
Join Date: Mar 2016
Location: Kingman Az
Posts: 1,686
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I'd replace the hose of the leaking side first and then the regulator. but that said have you tried switching the tanks to see if the rent a tank leaks on the other side? Occasionally you can get a bad tank with a mis-formed valve or a leaky vent screw. Best thing is to put some dish soap in a spray bottle and see if you can spot the leak before making any changes. You will need a "manometer" to set the regulator if you replace it. It is one of those tools like a battery load tester, that should come with every RV. good luck!
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May your black water hose never break!
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01-16-2017, 08:59 PM
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#14
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Member
Join Date: Mar 2015
Posts: 59
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Quote:
Originally Posted by lonfu
I'd replace the hose of the leaking side first and then the regulator. but that said have you tried switching the tanks to see if the rent a tank leaks on the other side? Occasionally you can get a bad tank with a mis-formed valve or a leaky vent screw. Best thing is to put some dish soap in a spray bottle and see if you can spot the leak before making any changes. You will need a "manometer" to set the regulator if you replace it. It is one of those tools like a battery load tester, that should come with every RV. good luck!
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Plan to switch the tanks for that test this coming weekend. If it is the same side with the other tank, ill just buy new pigtails and switch over regulator.
Sent from my LG-H918 using Tapatalk
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