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Good QEV?

Post questions and info about pneumatic (compressed gas) powered cannons here. This includes discussion about valves, pipe types, compressors, alternate gas setups, and anything else relevant.
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Good QEV?

Unread postAuthor: blind909 » Wed Jul 07, 2010 7:57 pm

http://cgi.ebay.com/Pneumatic-Quick-Exh ... 3ca1f78e9c

Is this a good qev? im going to be using it on my 6mm airgun(in the pneumatic showcase). I like this one because its small, and i like this shape over other qevs.
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Unread postAuthor: Gun Freak » Wed Jul 07, 2010 8:02 pm

Yes.
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Unread postAuthor: jackssmirkingrevenge » Wed Jul 07, 2010 8:03 pm

Much better than a ball valve :)
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Unread postAuthor: blind909 » Wed Jul 07, 2010 8:07 pm

Ok thanks for the fast replies!
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Unread postAuthor: deathbyDWV » Wed Jul 07, 2010 8:21 pm

jackssmirkingrevenge wrote:Much better than a ball valve :)


That's debatable... But I wouldn't care to debate it. :roll: :D
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Unread postAuthor: jackssmirkingrevenge » Wed Jul 07, 2010 8:23 pm

Fine, much better than an unmodded manually operated ball valve :P :D
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Unread postAuthor: blind909 » Wed Jul 07, 2010 8:38 pm

Also, i unscrewed the propane fill valve, and popped in a scraeder valve, and pumped it up to 125 psi, and fired a nail dart and holy crap was it loud and powerful!
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Unread postAuthor: jackssmirkingrevenge » Thu Jul 08, 2010 12:45 am

blind909 wrote:Also, i unscrewed the propane fill valve, and popped in a scraeder valve, and pumped it up to 125 psi, and fired a nail dart and holy crap was it loud and powerful!


Since you have a small metal chamber, why not invest in a shock pump?
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Unread postAuthor: blind909 » Thu Jul 08, 2010 12:46 am

I will definately invest in a shock pump. do u have any links to a nice, cheap(er) one?
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Unread postAuthor: blind909 » Thu Jul 08, 2010 12:49 am

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Unread postAuthor: jackssmirkingrevenge » Thu Jul 08, 2010 12:50 am

This type is reasonably priced and will happily go to 400 psi, which should give you at least 300% more power ;)

edit: looks like we linked to the same type :)
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Unread postAuthor: blind909 » Thu Jul 08, 2010 12:52 am

Lol i just posted a link to the same pump but for 20 bucks with free shipping lol. and would high pressures go well at all with that QEV?
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Unread postAuthor: jackssmirkingrevenge » Thu Jul 08, 2010 1:01 am

Specs rate it to 140psi but in practice many on this forum have abused larger QEVs to pressures beyond 500 psi, you shouldn't have any worries.

As to a pilot, I've used standard shop blowguns at 400-500 psi without leaks, but a ball valve is simpler and a safer bet.
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Unread postAuthor: blind909 » Thu Jul 08, 2010 1:05 am

Ok thanks for all the help jack!
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Unread postAuthor: jhalek90 » Thu Jul 08, 2010 5:50 am

I have a few of the other style QEV's (the non-boxy kind) in 1/4'' they have been to 450psi with no damage to the valve
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