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 P Type fuel pipes
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Cymber

United Kingdom
949 Posts

Posted - 20/11/2014 :  15:26:47  Show Profile
Does anyone have a solution to the problem of connecting 5/16 OD pipe to the fuel changeover valve in the absence of the correct tooling for the original method.

Maurice Blakey.

Brian Kelly

USA
526 Posts

Posted - 20/11/2014 :  16:42:15  Show Profile

Hi Maurice,

I used a brass pipe fitting known as a compression coupling. Also known as a Ferrell ring union. In the UK I think they would have converted to Metric but I presume that you can still find the BSP union in local hardware stores.


http://www.mscdirect.com/product/details/71783468?CS_010=71783468&item=71783468&CS_003=7867724&src=pla&cid=PLA-Google-PLA+-+Test

I think that the union is sized by pipe O.D. Obviously you only have to use one compression nut and one compression ring.

Good luck on the search.

Brian.
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Horst Wendling

Germany
439 Posts

Posted - 20/11/2014 :  20:33:19  Show Profile
Hi Maurice,
i used this with silver or soft soldering:
http://www.vintagecarparts.co.uk/categories/vintage-car-parts-taps-pipe-and-fittings-fittings
please see part No. CA 127 and CA 120

It looks near like the original method.

Horst
PA492
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Nick Feakes

USA
2644 Posts

Posted - 20/11/2014 :  20:35:58  Show Profile
Maurice
If you use solder on fittings then you must use silver solder. Ordinary lead solder can fracture with vibration and will melt quickly in a fire. Not good with a petrol line!
Nick
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Cymber

United Kingdom
949 Posts

Posted - 20/11/2014 :  22:12:21  Show Profile
Thanks gentlemen.
This may be a silly question but what about using high strength Loctite instead of solder?

Maurice.

Edited by - Cymber on 20/11/2014 22:13:29
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LewPalmer

USA
2633 Posts

Posted - 20/11/2014 :  22:24:59  Show Profile
No, silver solder is the only strong and permanent solution.

Lew Palmer
PA1169, PB0560
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Drolshagen

Germany
509 Posts

Posted - 21/11/2014 :  07:50:36  Show Profile
Hi Maurice,

here do you get everything you need for your pipe work

https://maccmodels.co.uk/live-steam-fittings/union-nuts-and-nipples.html

Carl
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