I am seeking a replacement for my current fuel on/off tap. Firstly, the threaded part up into the tank is broken short of its full length, and secondly, the rubber seal either side of the sliding push/pull plate allows leakage.
I’m not sure if this is a standard item in the first place and I’m also not sure of the exact thread specification either up into the tank or into the fuel line; they are different threads. The tank end is 9.71mm in diameter – perhaps someone can help me with the standard thread spec into the tank? The fuel line end is 10.81 mm diameter with a female flare internally.
The following are images of the existing set-up:
I’d be grateful for any assistance or leads on a suitable replacement.
Happy New Year!
The tank end of the tap is 1/8 BSP (pipe thread 28tpi). The other end is not important if you are buying a new tap as they usually come with a spigot, but I think it will be 7/16″.
I have not got them listed online yet but I’ve got 4 different styles of 1/8″ taps plus the fuel line, washers etc to suit. Give me a call if you want, phone number on my website (link below). I can email photos etc.
The original Eyot “push-me-pull-you” taps had a hexagon (hexagON – get it?) button at one end of the slide and a round button at the other (round off?) so your one looks like it might be a pattern replacement.
The sealing material in the original Eyot taps was a cork material not rubber although whether natural or man-made I cannot say.
They could be made to 100% seal but were, in the main, better at faintly weeping! There is a modern ball valve replacement that has received praise and unless you are determined to be meticulously original worth considering.
The thread is the standard 1/8” BSP with a nominal 0.383” outside diameter and 28 tpi as Richard says although all the ones I have are 1/8” BSP at both ends. Be aware that there are two types of BSP threads, one is a parallel type (the one you want) and the tapered BSPT type, both have the same thread pitch.
G’day Stephen, I’ve just replaced petrol and oil taps on my Scott and all I did was take the samples to my local Repco spares outlet in Adelaide..they matched them up from their catalogue of fuel line fittings and supplied both from stock. Give a go..they are fairly standard bits !
Regards Peter Scott
Thanks to all of you for your replies. I certainly know all I need to now.
The bike (image link in my signature – complete with original UK rego) has never been registered in Australia, though it was restored here 20-odd years ago by my father. It did come modified to a dodgy home-rigged rear suspension but was put back to rights with the aid of a spare frame that came with the bike on purchase.
Once I have a couple of things sorted – like this fuel tap issue – I’ll get it club registered and back on the road legally and permanently! Fantastic to know the network here and through the SOC is so knowledgeable and motivated to assist.