Gas shut off valve thread sealer?

Yes. Worked all the time for me if the ferrule is bad replace it if the seat is bad Regrind it
I never use any sealant or thread tape. Sometimes a new line w fittings is in order
Larry
 
The gas shut off valve uses a compression fitting. You are not supposed to use a sealant on gas lines... That is a No_No.. That is why there are compression fittings on the lines.
Furthermore with today's gasoline one never knows what it will eat.
My advise is USE NOTHING... my experience after 40+ years of A driving...
If the valve leaks at the fitting IT IS THE FITTING and SHOULD BE REPLACED..
The fittings are cheaper than a roadside repair or tow...

Rog
 
Michael M said:
I'm about to replace the gas shut off valve on my '31. I did a search on the forum and found one vote for sealing the threads with pipe dope, one warning not to use pipe dope, and third opinion to use thread sealer designed for gas (not sure if the the reference was to gasoline or natural gas).

May I solicit advice from the Barners?
Click to expand...

Which part are you referring to ? The part that threads into the gas tank ?

Marc
 
Thanks for all the advice. I see there is no consensus as yet, but it's good to see that there is a variety of choices that seem to work.

Just to clarify, I am speaking of the threads that connect to the gas tank. I would not put anything on the compression fitting.

I guess my concern is that for the valve to align, I may not be able to tighten as much as I could. Just wanting to have an 'insurance policy.'
 
Hi Michael,

In reply no. 18, with the pipe stick solution, we can add this:

1. Murphy is hiding in every Model A garage & he is just waiting to show you his law.

2. This pipe stick can tell Murphy to go fly a kite.

3. With a new 90 degree gas shut off valve, the horizontal oriented flared fitting for the very rigid steel gas line is not a Murphy curse & will never need the pipe stick.

4. The vertical threads screwing into the gas tank is what Murphy is watching.

5. Just as you screw in the "new" shut off valve & it feels tight, Murphy attacks & shows you that the flare fitting should have stopped at 12 0'clock on the passenger's side of the gas tank .............. but this new shut off valve passed by 12 o'clock & went clockwise to one (1) o'clock.

5. So if you pass (1) o'clock & go clockwise to get to 12 o'clock, the threads could strip.

6. The stick can help.

7. Just unscrew the new gas line, apply a 2nd coating of pipe stick compound, stop at 12 o'clock, & allow the pipe stick compound to cure for 24 hours before turning the new shut off valve handle.

8. Murphy quit coming in my garage for threaded gas tank fittings, threaded carburetor fitting, & oil drain fittings years ago -- I think Murphy was looking at my 6V battery a few days ago, but I got a new Schumaker battery maintainer from Amazon.com yesterday.
 
Freak,
You're right. I said the gas inlet but meant the GAV inlet. Others have suggested some alternatives for the white tape which I will follow.

Glen
 
I used Permatex #2 because I had it laying around, and no sign of a leak after several years.

On a slight off-topic: what's a good sealant for radiator hoses that have a slight leak?


Doug
 
Permatex Number 2 has been sealing fittings and resisting gasoline for decades without ever hardening completely.
 
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