Shut off valve under the tank

O

old31

Well-known member
What’s a good lubricant to put inside the shut off valve under the tank to keep it smooth running.
 
The fuel proof grease that I have used for many years is EZ Turn.

Aircraft Spruce carries it.

1. An added benefit is that this grease stops abrasive rust particles and sand from entering the tapered part of the valve.

The rust getting in there is largely responsible for stuck valves which are impossible to turn and the cause of worn out tapers inside the valves.

I have used it on every NEW valve and on any valve that will not turn or turns hard.

Of course the valve must be dissembled to install it and remove rust particles and sand.
 
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Please use special, fuel-resistant greases. These are fluorosilicone (FVMQ) or perfluoroether (PFPE) types.
 
sometimes making the gas tank valve leak proof is impossible. those things can give you grief.

this is just an FYI if is not for everyone.
on my cars i install a small needle valve (like the Sioux Chief 1/4 inch Brass Compression Needle Valve) on the line from the sediment bowl to the carb. takes 10 minutes to install. once i have the valve in the tank so it does not leak i never turn it or shut it off. i use the needle valve all the time instead.
 
I got tired of dealing with the original style S/O valve so I installed a ball valve. No issues since.

586509


Snyder's has since started selling the new design shut off valve which uses a ball valve instead of the wedge type.

I use the EZ Turn on all my gas valves. I use it on throttle shafts also.
 

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I did the same as Y Blockhead a few years ago and the %^ ball valve is now leaking (slowly) too. Grrr.
To lubricate the original style valve, I use the same rubber grease you would use during he assembly of hydraulic brake components. It is water based (so it won't destroy brake rubbers) and for the same reason, is fuel resistant.
 
The new ball valve that Snyder's carries and others carry works very well the 1 drawback is it has a hex shaped inlet The older style filter is round when I purchased mine they were out of stock on the hex shaped pencil filter so I just used some JB weld to seal my round pencil filter into the hex shaped hole!!!
 
Fullraceflathead said:
The new ball valve that Snyder's carries and others carry works very well the 1 drawback is it has a hex shaped inlet The older style filter is round when I purchased mine they were out of stock on the hex shaped pencil filter so I just used some JB weld to seal my round pencil filter into the hex shaped hole!!!
Click to expand...

Yes, the hole is hex, it must have something to do with the manufacture off the valve because the new filter is round.

When the ball valves first came out, Bratton's included an "adaptor" to use the old filter until the new filter was readily available.
 
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Y-Blockhead said:
I got tired of dealing with the original style S/O valve so I installed a ball valve. No issues since.

586509


Snyder's has since started selling the new design shut off valve which uses a ball valve instead of the wedge type.

I use the EZ Turn on all my gas valves. I use it on throttle shafts also.
Click to expand...
The belt & suspenders approach.......
 
I just installed one of the new valves from Snyder’s, we’ll see how it goes. I’m thinking seriously about installing one of those electric valves. Does anyone have experience good or bad with an electric valves?
 
A club member used an electric solenoid on his ‘31 so he wouldn’t need to open the hood to turn the fuel on and off every drive. The solenoid opens the valve when it receives voltage. When it failed on a long drive it shut off the fuel, requiring a roadside seminar to proceed.
 
I used the EZ Turn that Benson mentioned, and I sanded down the fine scratches on the shut off. Now when I turn on or off the shutoff, I laugh because it is so easy to turn. It actually feels broken.
 
A club member's car had one of those electric shut off valves. It wasn't working, so I disconnected it to get his car running again.
 
The reproduction gas shutoff valve in my Victoria has been leak-free since 1993. The valve in my Coupe has been leak-free for many years longer. Neither one has any lubricant other than gasoline.
 
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