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06-01-2020, 10:05 PM | #1 |
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Location: Corning NY
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Gas Valve Installation - thread sealant recommended?
I am going to install a new gas valve on the underside of the gas tank. Can I use teflon tape on the NPT threads to the tank and little dab of gasket eliminator on the swedged end of the valve? Your recommendation please?
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06-01-2020, 10:11 PM | #2 |
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Re: Gas Valve Installation - thread sealant recommended?
No . No Teflon tape.
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06-01-2020, 10:36 PM | #3 |
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Re: Gas Valve Installation - thread sealant recommended?
I use a dab of Permatex No 3.
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06-02-2020, 04:09 AM | #4 |
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Re: Gas Valve Installation - thread sealant recommended?
I thought no tape. Just wanted to be sure. Permatex it is! THanks
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06-02-2020, 08:19 AM | #5 |
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Re: Gas Valve Installation - thread sealant recommended?
Yellow teflon tape or pipe dope. It's a pipe thread. Permatex will make it tough the next time.
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06-02-2020, 10:14 AM | #6 |
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Re: Gas Valve Installation - thread sealant recommended?
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06-02-2020, 10:37 AM | #7 |
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Re: Gas Valve Installation - thread sealant recommended?
Yellow Teflon tape is fine as long as you get it on the treads only. Don't have it where it might get into the gas.
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06-02-2020, 09:27 PM | #8 |
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Re: Gas Valve Installation - thread sealant recommended?
Teflon tape is a mechanics best friend....... for making money
If your the mechanic on your car, it's your worst enemy. Liquid pipe sealer made for sealing gasoline !
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06-02-2020, 09:37 PM | #9 | |
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Re: Gas Valve Installation - thread sealant recommended?
Quote:
So far I've never had to use anything.
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06-02-2020, 10:31 PM | #10 |
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Re: Gas Valve Installation - thread sealant recommended?
Permatex #3 doesn't harden. I've undone fitting where I used it years later and no problem.
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06-02-2020, 11:36 PM | #11 |
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Re: Gas Valve Installation - thread sealant recommended?
In another life, I assembled many VW bug engines and the two block halves were sealed with Permatex #3 and,upon disasembly, we used ethanol to wash away the stuff. My concern with Permatex #3 is that it is soluble in ethanol so would the 10% ethanol fuel that we are currently being sold potentially undermine at the sealing effect?
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06-03-2020, 07:22 AM | #12 |
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Re: Gas Valve Installation - thread sealant recommended?
Yellow Teflon tape is fine as long as it is on the threads and not up where it can get into the gas line. I have used it for many years on many applications with no problems.
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06-03-2020, 07:45 AM | #13 |
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Re: Gas Valve Installation - thread sealant recommended?
Permatex Permashield is the ticket.
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06-03-2020, 08:16 AM | #14 |
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Re: Gas Valve Installation - thread sealant recommended?
I haven't used permatex in years, I only remember the old stuff that got dead and hard, for gas I've been using Hilamar, spelling might be off on that, on the 32 to 34 trucks the hydro for the gas gauge is on the bottom of the gas tank, thats the only stuff that kept gas from leaking around the cap screws.
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06-03-2020, 02:10 PM | #15 |
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Location: Fairbanks, Alaska
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Re: Gas Valve Installation - thread sealant recommended?
Read the labels, any pipe thread compound that says it's good for gas or diesel (usually in a list of about 40 things), will work fine. I several varieties on my shelf, most are green in color but not all.
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06-04-2020, 04:12 AM | #16 |
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Location: Bismarck ND
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Re: Gas Valve Installation - thread sealant recommended?
I use a product called Gasoila. It is a paste and used in the petroleum industry. It works very well and I have never had a leak using it. Just google gasoila.
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