prawnabie
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| posted on 31/1/10 at 09:26 PM |
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non return valves
Hi
When fitting a non return valve on a tank breather, do you need either a 1 way (lets air in only) or can you get a 2 way one?
Which is best and where can I get one from?
Cheers chaps
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nitram38
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| posted on 31/1/10 at 09:29 PM |
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two way, thinkautomotive
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Bigheppy
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| posted on 31/1/10 at 09:29 PM |
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quote:
Originally posted by prawnabie
Hi
When fitting a non return valve on a tank breather, do you need either a 1 way (lets air in only) or can you get a 2 way one?
Which is best and where can I get one from?
Cheers chaps
? isnt a two way one an open pipe 
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flak monkey
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| posted on 31/1/10 at 09:30 PM |
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You should have a 2way one if you have a return to the tank.
I bought mine direct from Newton Equimpent
http://www.newton-equipment.com/inline_valves.html
I used the TPV8 valve, seems to work well.
The one way valves are OK but can allow a significant amount of pressure to build up in the tank.
Sera
http://www.motosera.com
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RichardK
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| posted on 31/1/10 at 09:31 PM |
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quote:
Originally posted by nitram38
two way, thinkautomotive
Why a 2 way valve on a crossflow? thought 2 ways were only required on fuel injected setups with a tank return.
Would a cheapo 1 way do here?
Cheers
Rich
Gallery updated 11/01/2011
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flak monkey
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| posted on 31/1/10 at 09:31 PM |
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quote:
Originally posted by Bigheppy
? isnt a two way one an open pipe
No the proper ones like I linked to have 2 spring loaded balls in them. So they wont leak fuel if you roll the car.
Sera
http://www.motosera.com
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Bigheppy
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| posted on 31/1/10 at 09:32 PM |
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quote:
Originally posted by nitram38
two way, thinkautomotive
just followed the link and see what you mean.  air in over pressure out
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RichardK
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| posted on 31/1/10 at 09:32 PM |
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too slow again!
Gallery updated 11/01/2011
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prawnabie
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| posted on 31/1/10 at 09:34 PM |
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Nah its some gadget that allows air fo escape but not fuel lol. Ive looked on think automotive but it looks like they only do bolt in on weld in ones.
I need one that fits onto a hose!
Cheers
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prawnabie
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| posted on 31/1/10 at 09:36 PM |
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quote:
Originally posted by RichardK
quote:
Originally posted by nitram38
two way, thinkautomotive
Why a 2 way valve on a crossflow? thought 2 ways were only required on fuel injected setups with a tank return.
Would a cheapo 1 way do here?
Cheers
Rich
Im not sure what I need tbh!
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RichardK
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| posted on 31/1/10 at 09:39 PM |
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This is what I used but its only 1 way but there again I don't have a return as I have a pinto on carbs
LINKY
Cheers
Rich
Gallery updated 11/01/2011
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nitram38
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| posted on 31/1/10 at 09:46 PM |
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You need to let air into the tank and allow expansion on hot days even if you don't have a return pipe.
Thinkauto will make you up a valve to go into a pipe.
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Richard Quinn
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| posted on 31/1/10 at 11:36 PM |
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quote:
Originally posted by nitram38
You need to let air into the tank and allow expansion on hot days even if you don't have a return pipe.
Thinkauto will make you up a valve to go into a pipe.
Correct! I have no return even though on injection (gixxer pump) so only had a 1 way
valve. Don't under estimate how much expansion/vapourisation you can get on a warm day.
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Angel Acevedo
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| posted on 1/2/10 at 12:07 AM |
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Hijack
I will be making my own tank, eventually, I kept a valve from the original tank, it was affixed by a grommet only to the tank, I think it has the
function to let air in and not let fuel out.
Do you think it´s a good idea to install?
Or shoul I get a proper valve (Not locost?)
Thanks and sorry for the hijack
AA
Beware of what you wish.. for it may come true....
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alexg1965
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| posted on 1/2/10 at 07:16 AM |
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If it helps, Car Builder Solutions sells these
Give them a ring on 01580 891309, they're very helpful.
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Hammerhead
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| posted on 1/2/10 at 10:00 AM |
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quote:
Originally posted by flak monkey
You should have a 2way one if you have a return to the tank.
I bought mine direct from Newton Equimpent
http://www.newton-equipment.com/inline_valves.html
I used the TPV8 valve, seems to work well.
The one way valves are OK but can allow a significant amount of pressure to build up in the tank.
Hi David,
Did you call them to purchase? also how much are they if you don't mind saying.
Thanks.
Steve.
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flak monkey
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| posted on 1/2/10 at 10:51 AM |
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I think I emailed them, but yes you can call them direct. The valves are about £45 from memory.
The ones thinkauto sell are the Newton ones anyway. So you might as well buy direct.
Cheers,
David
Sera
http://www.motosera.com
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Neville Jones
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| posted on 1/2/10 at 01:07 PM |
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Try Speedflow.
http://www.speedflowshop.co.uk/valves-check-breather-pressure-realease--onoff-173-c.asp
Both one way and dual valves available.
Cheers,
Nev.
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prawnabie
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| posted on 1/2/10 at 07:18 PM |
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Cheers for the help guys, I wil have a mooch!
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