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1" 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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1" QEV?

Unread postAuthor: ShowNoMercy » Sun Dec 09, 2007 11:18 pm

I have been looking on the internet for a larger sized QEV and so far have yet to find any. Where do you guys normally get them? I looked on ebay but all they had were valves from IONs. I really want a 1 inch one. Thanks
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Unread postAuthor: octane89 » Sun Dec 09, 2007 11:22 pm

Ions...paintballs low point. I have seen a 1inch qev, and will see if I can find it in my history online.

I read about some here.
http://www.globalmanufacturing.com/prod ... ccessories
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Unread postAuthor: ShowNoMercy » Sun Dec 09, 2007 11:28 pm

I think I shall get a 3/4 one from MC master tonight instead.
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Unread postAuthor: ShowNoMercy » Sun Dec 09, 2007 11:33 pm

Ok cancel that, lost my wallet and its dark. Anyway, would a 3/4 QEV outperform a 1 inch modded sprinkler valve?
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Unread postAuthor: MrCrowley » Sun Dec 09, 2007 11:35 pm

I hear it does.
I have a gun that has a 3/4" QEV piloted by a 1" sprinkler :D
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Unread postAuthor: ShowNoMercy » Sun Dec 09, 2007 11:37 pm

Alright, I will get that tmmr if I can find my wallet.
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Unread postAuthor: LikimysCrotchus5 » Sun Dec 09, 2007 11:56 pm

Well if you still want to consider............Fastnel sells 1 inch QEVs but will make you wallet lighter by alot. $142 i think.

http://www.fastenal.com/web/products/de ... ku=0443032
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Unread postAuthor: ShowNoMercy » Sun Dec 09, 2007 11:58 pm

Well since I am saving for a home theater system as of now, I will have to pass on that and just get the 3/4 inch one.
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Unread postAuthor: ALIHISGREAT » Mon Dec 10, 2007 2:36 am

its the same in the uk, 1" QEVs are ~£80 wheras 3/4" are under £20 which is really annoying... a 1" qev cannon would have so much power :evil:
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Unread postAuthor: jackssmirkingrevenge » Mon Dec 10, 2007 2:46 am

ALIHISGREAT wrote:its the same in the uk, 1" QEVs are ~£80 wheras 3/4" are under £20 which is really annoying... a 1" qev cannon would have so much power :evil:


buy two 3/4" QEVs then ;)
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Unread postAuthor: psycix » Mon Dec 10, 2007 11:36 am

Surface of flow:
2*pi*r*r

1" QEV: 2*pi*0.5*0.5 = 1,57 square inch
3/4" QEV: 2*pi*3/8*3/8 = 0,88 square inch

dual 3/4" QEVs: 0,88 * 2 = 1,77 square inch

1,77 > 1,57
two 3/4" QEV's have more flow then a 1"
and since 80>(2*20) it is a wise thing.
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Unread postAuthor: ALIHISGREAT » Mon Dec 10, 2007 12:08 pm

jackssmirkingrevenge wrote:
ALIHISGREAT wrote:its the same in the uk, 1" QEVs are ~£80 wheras 3/4" are under £20 which is really annoying... a 1" qev cannon would have so much power :evil:


buy two 3/4" QEVs then ;)


yeah but i prefer the look f single valve cannons... althought i probably will end up doing that at some point.
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Unread postAuthor: Hotwired » Mon Dec 10, 2007 1:18 pm

The jump from 3/4" to 1" is incredible.

I don't know what it is, lower demand or some fiendish manufacturing issue but the price always takes a godawfully huge hike in the few cases where 1" QEV's are being sold.
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Unread postAuthor: psycix » Mon Dec 10, 2007 1:24 pm

Hotwired wrote:The jump from 3/4" to 1" is incredible.

I don't know what it is, lower demand or some fiendish manufacturing issue but the price always takes a godawfully huge hike in the few cases where 1" QEV's are being sold.


The jump from one to two 3/4" valves is even more incredible!
When including elbows and a tee flow restriction two 3/4 QEVs should equal a 1" QEV as concluded out of my calculations.

I am not telling from experience but I estimate by the calculations 2x 3/4" QEVs will substitute a 1".
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Unread postAuthor: ALIHISGREAT » Mon Dec 10, 2007 1:31 pm

Maybe you could make a 1" qev which would be similar to a piston valve but you would use a diaphgram-ish piston and replicate a standard qev design... it can't be that hard :?:
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