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Old 01-14-2020, 03:00 PM   #1
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dual stage propane regulator

the pigtales between the 2 propane tanks and the regulator, look like they are in the beginning stages of dry root. The hose from the regulator to the trailer still looks good. I was wondering if i should just replace regulator and pigtakes with a new regulator and pigtales, or should I just replace the pigtales? TIA


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Old 01-14-2020, 03:42 PM   #2
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I would test the output pressure and if it's within spec (11" WC) or can be adjusted to spec, I'd just replace the pigtails.

If I were going to replace the regulator, I'd also go with a Marshall brand. They're better quality than most of the others.
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Old 01-14-2020, 03:43 PM   #3
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How old is the regulator? I just replaced the one on our 2012.
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Old 01-14-2020, 03:52 PM   #4
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Have no idea how old the regulator is, the trailer is a 2012 grey wolf 28bhks. The regulator is a dual stage, manual change, I think. And it was working good last season.
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Old 01-14-2020, 04:57 PM   #5
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Mine was working good 2 weeks before and took a dump costing a 20 lb bottle of propane overnight!
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Old 01-15-2020, 03:40 PM   #6
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Diaphragm

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Mine was working good 2 weeks before and took a dump costing a 20 lb bottle of propane overnight!
Yes, the failure mode always seems to be rust pinholes in the diaphragm.

(Doesn't everyone take broken stuff apart to see why it failed? Or is it just me? I did work in Failure Analysis for a couple of years.)
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Old 01-15-2020, 03:51 PM   #7
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RV propane regulators do NOT last forever. This article tells you most everything you need to know:

https://rvshare.com/blog/rv-propane-regulator/

It implies your regulator may be likely to fail in 11-15 years from new. Predictably, my '06 regulator lasted about 11 years. It was VERY EASY and pretty cheap to replace everything with parts available from the largest on-line source, including a better grade automatic switch-over regulator.

If you know how to work with fittings and are not afraid of gas, this is a great DIY candidate.
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Old 01-15-2020, 03:53 PM   #8
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I also replaced the dual stage regulator on my 2012 fifth wheel last season. Then the high pressure regulator on the other side of the RV began leaking and was also replaced. If your existing regulator is working fine I might hold off on replacement to get as much use out of it as possible, but be aware that it could eventually fail without much warning. Hope that's not on a cold rainy night when you don't have easy access to a new one! Proper calibration of a new regulator is also a factor.
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Old 01-15-2020, 04:25 PM   #9
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Propane

I would wait for a warm day and change the pigtails now. Wait on the regulator. You will want to do the pigtails when you change out the regulator anyway.
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Old 01-15-2020, 06:49 PM   #10
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Dry Rot Pigtails

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I would wait for a warm day and change the pigtails now. Wait on the regulator. You will want to do the pigtails when you change out the regulator anyway.
I would definitely change the pigtails A.S.A.P.
That is a safety issue I would NOT wait to correct, regardless if you change the regulator or not. IMHO.
I have had to change mine twice due to a BAD FILL on an external add-on tank.
When regulator was pulled it dripped oil from regulator and hoses. On-board tank was fine, no oil.

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Old 01-15-2020, 07:01 PM   #11
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Seems you just never know about these LP items.

I have had R/Vs that I kept for many years and never changed a regulator or a hose, yet on our 2016 I've already replaced the main switch-over regulator, the red regulator on the driver's side tank and two check valves.
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Old 01-15-2020, 07:32 PM   #12
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Quote:
Originally Posted by Alucke View Post
the pigtales between the 2 propane tanks and the regulator, look like they are in the beginning stages of dry root. The hose from the regulator to the trailer still looks good. I was wondering if i should just replace regulator and pigtakes with a new regulator and pigtales, or should I just replace the pigtales? TIA


alucke
I would replace the whole thing. If one part is failing and you don't know how old they are why take the chance? I bet the difference in cost is less than $25.
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Old 01-15-2020, 07:46 PM   #13
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I am going to the trailer tomorrow and see if what type of connector the hoses have. Then I will order the hoses.
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Old 01-16-2020, 12:37 AM   #14
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Be sure to disconnect them to know if they are flaired connections or not so you know what to order. Take a picture of the inside of the connector if unsure.

I swapped pigtails 3 times on my 3yr old trailer $6 each. I swapped the regulator once $50...
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Old 01-16-2020, 10:19 AM   #15
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If both pigtails are connected directly to the regulator then both pigtail fittings should be " inverted flares.

Fifth wheels that have a second off side regulator the crossover hose connection is NPT.
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Old 01-16-2020, 10:29 AM   #16
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Propane regulator

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Originally Posted by Bama Rambler View Post
If both pigtails are connected directly to the regulator then both pigtail fittings should be " inverted flares.

Fifth wheels that have a second off side regulator the crossover hose connection is NPT.
Your regulator may be different, but mine is 1/4NPT at one end
and 3/8NPT at the other. It's a Camco regulator.

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