Changing Propane Pigtails to POL - Fiberglass RV


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Old 06-10-2014, 07:40 PM   #1
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Changing Propane Pigtails to POL

I want to change my propane tank pigtails to POL connectors for the tank side.

My question is, what is it that I have on the regulator side? Even if I removed one of these, I still would not know what I had. Nor would I be able to tell if I removed it what I had.

Is there a standard size?

I would hate to order this:

Camco 59053 12" Pigtail Propane Hose Connector

only to find out I need some oddball expensive adapter to make it fit on my 1998 vintage two stage auto crossover regulator. Or worse, have to return these to get something else.



I suppose I could remove one and take it to Home Depot and find out.


What should be a simple thing seems awful complex to figure out.


Does anyone know if there was an RV standard for hose connections at the inlets of a two stage regulator?
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Old 06-10-2014, 07:46 PM   #2
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Not even sure if I have the terminology right. Is that an ACME attachment on the referenced pigtail or POL?

What I want is a pigtail I can screw on by hand instead of using a wrench, and reduce the possibly over-tightening, damaging the rubber o-ring, and simply making it easier to swap cylinders.
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Old 06-10-2014, 09:13 PM   #3
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The three-lobes-on-the-plastic-handle connector design was mandated by The All Powerful US Federal Agency In Charge Of Protecting Your Butt years ago. Few propane dealers have the old connector adapter anymore, so make sure you can still use refill facilities before doing a permanent changover.

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Old 06-11-2014, 09:54 AM   #4
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A 'POL' connector has 'male' left-hand threads that screw 'into' the connector valve of the propane cylinder, & requires a wrench to install/remove. Even the 'new' valves with OPD (Overfill Protection Device) mandated by the NFPA Compact, still retain the 'inner' threads & will accept POL connectors.

The 'ACME' nut (usually some kind of thermoplastic) used on gas grills & such, has right-hand 'female' threads that fit the coarse, outside threads of the 'newer' OPD cylinder valve, & can be hand tightened.

The connector that screws into the regulator is usually 1/4" NPT (National Pipe Thread) for RV type regulators.
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Old 06-11-2014, 01:46 PM   #5
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I've seen regulators that use;
1/2" pipe thread
3/8" pipe thread
1/4" pipe thread
1/4" inverted flare

I think most common are the 1/4" pipe thread or 1/4" inverted flare.

Look at the regulator and get the brand and model number. Search the net for your regulator and if still made you will find out what connections it uses.
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