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 > replacing pigtails on propane tanks

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Old-Biscuit

Verde Valley

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Posted: 07/15/21 09:57am Link  |  Quote  |  Print  |  Notify Moderator

StirCrazy wrote:

rvshrinker wrote:

thank you that is so helpful!

This article suggests yellow tape is the preferred sealing method and adequate:

https://www.oasisngv.com/vdb/document/1179


actualy it doesnt, it says it is more conventiant for the worker to use as it is easier to carry , doesnt have a shelf life, and has no cure time. if you dont wrap it properly it can be the worst one you'll use.

I used to work for a gas company when I was a young lad and we would have been fired for using tape instead of liquid sealers. if you notice when the rv's come from the factory they use a liquid sealant also. the choice of liquid sealants is just as important though, you want to get a non hardining one, so it sets up but doesnt harden like a rock.

Steve


Liquid sealers are fast/easy ....just a quick wipe around the threads with the brush----Done

Yellow Gas Tape is just as effective and less messy.....just a couple of wraps in the RIGHT direction...done
Direction is important where as with liquid sealant---just swipe it on

Commercial/Production----time is money....liquid sealant is the choice
Yellow tape is good also.


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Grit dog

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Posted: 07/15/21 11:15am Link  |  Quote  |  Print  |  Notify Moderator

Yellow gas pipe tape is just fine for npt threads. Not sure where that wives tale came from.
Or pipe dope. TAke your pick. Heck electrical tape will work in a pinch.
Thread is generally 1/4” male flare or 1/4” mpt. Just replaced one on our 2017. Fwiw the great camping world didn’t have the right one. Should have just gone to the hardware store in the first place.


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rvshrinker

Beautiful Pacific Northwest

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Posted: 07/15/21 07:24pm Link  |  Quote  |  Print  |  Notify Moderator

what is the RIGHT direction?

time2roll

Southern California

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Posted: 07/15/21 07:32pm Link  |  Quote  |  Print  |  Notify Moderator

rvshrinker wrote:

what is the RIGHT direction?
The correct way should wrap the tape around as you are turning in the direction of tightening the male fitting. You will be Turning to the right as you have a right hand thread.


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Old-Biscuit

Verde Valley

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Posted: 07/15/21 08:53pm Link  |  Quote  |  Print  |  Notify Moderator

rvshrinker wrote:

what is the RIGHT direction?


Hold item so threaded end is to your right....
Then start wrap on threads AWAY from you

philh

Belleville MI

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Posted: 07/16/21 04:41pm Link  |  Quote  |  Print  |  Notify Moderator

Old-Biscuit wrote:

Yours could be NPT or Inverted Flare (check which in the LINK above)
If old hoses screw directly into REG body then NPT
If old hoses screw into a brass adapter on REG then Inverted Flare

Yellow Gas Tape on NPT...not on Inverted Flare

Tighten until you feel good resistance ....

No washers used.

My first TT was used, and the Community College Plumbing / Certified Master Plumber had installed a new water heater.

Propane line (flare fitting), not only was loose enough to start a fire, but even better, pipe dope spread on the flare fitting.

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