where can i buy qev

[far_cry]

does anyone know where to buy qev on the net include shipping world wide except eBay?

i found this in eBay
http://cgi.ebay.com/Pneumatic-Quick-Exh ... 3ca1f7c8e2

38 $ include shipping is that good price for 1/2" qev made in china ?

and i read in this site that some of you tested and use this qev with high pressure up to 850psi ,so can i use it with 650 psi always ?

[jackssmirkingrevenge]

That's just over 25 euros, you can make your own piston for much less

[far_cry]

i made piston valve, but i get some issues with it
leaking (that i can fix) the major problem is the piston seal
because i use such i high pressure 700psi the seal always cut off and that happen even with 2mm seat smooth surface

i looked for hard rubber that i can machine it with the shape of piston but couldn't find .

[jackssmirkingrevenge]

Can't you enlarge the seat externally by epoxying some extra tubing, like I did here?

[far_cry]

Can't you enlarge the seat externally by epoxying some extra tubing, like I did here?

no i cant its very limited . 3/4" T

just a hard rubber piston will help me

[MrPed]

I just bought this the other day:

http://cgi.ebay.com/Pneumatic-Quick-Exh ... 3ca578066a

But, I have yet to test it. When I get around to testing it I will let you how it goes.