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Old 03-30-2017, 01:03 AM   #21
Tony Hillyard
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Default Re: Fuel shut-off valve

Thanks for all your efforts Larry,

1/4" pipe thread, is that parallel or tapered? Do you happen to know if it is NPS thread (American) or BSP (British pipe thread)?

I have found a tap on eBay - Chinese of course! And will order a cheap one as I might only ever use it once.
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Old 03-30-2017, 04:35 AM   #22
Tony Hillyard
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Default Re: Fuel shut-off valve

Sorry that should read 1/4" x 18 NPT
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Old 03-30-2017, 11:59 AM   #23
katy
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Default Re: Fuel shut-off valve

1/4" BSP British Standard Pipe thread has 19 TPI.
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Old 03-30-2017, 06:30 PM   #24
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Default Re: Fuel shut-off valve

Quote:
Originally Posted by Tony Hillyard View Post
Sorry that should read 1/4" x 18 NPT
yes.
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Old 04-07-2017, 09:04 AM   #25
Tony Hillyard
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Default Re: Fuel shut-off valve

Good Afternoon everyone,

An update on the leaking fuel cut-off valve. As mentioned I bought a new one from Brattons but was not sure if the thread was correct. I contacted Brattons and the valve makers Snyder's. Both came back with the same information it is a 1/4" x 18 NPT thread.

Following Larrys40's, suggestion I bought a new 1/4" x 18 NPT die (probably the only living example in France!), ran it through the outlet in the tank. Carefully tried the new cut-off valve, and now we have a beautiful tight fit. Connected the outlet pipe top the firewall, put in some fuel.........NO LEAK!

I know I was probably being over careful, but I think it is better to double check the thread rather than muck up the tank outlet thread. Can you imagine the hassle if you did that?

Thank you again everyone for all your input.

Tony
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Old 04-07-2017, 09:41 AM   #26
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Default Re: Fuel shut-off valve

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Tony
Wonderful !!! Glad it all worked out.
Many thanks for taking the time to get back to us at the forum and posting your follow up.
For those of us who are technically regular contributors we are most appreciative .
All the best to you and keep sharing your Model A experiences from France .
Incidentally my daughter I believe is going to school for a semester next year there.
I will drop you a pm soon
Larry Shepard
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