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3 way valve and QEV for semi-auto?

This area is for the discussion of BB or airsoft sub machine guns, and or other small arms such as pellets.
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3 way valve and QEV for semi-auto?

Unread postAuthor: budabob07 » Sat Nov 13, 2010 3:27 pm

hi i was wondering if this would work for a semi-auto gun. the 3 way valve is a mead MV-10. info sheet for valve -->http://www.mead-usa.com/products/media/three-way_air_switches.pdf
it would be hooked up with the pilot of the qev to port 2, and the air source on port 3. port 1 would be the exhaust.
Loading (sorry for using URL's for images. I couldn't upload the image (Error was "Tried to upload empty file"
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Firing
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would this setup work? the idea is that when the trigger isnt pulled, air flows from the source to the qev, and when you pull it, it flows from the pilot of the qev out an exhaust port.
also, if this doesnt work, what would an alternative be? Also, is there another way (the valve is $20, and with a QEV it would be ~35)
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Unread postAuthor: Gun Freak » Sat Nov 13, 2010 4:55 pm

Dude... this method has been used like a hundred times... lol. Yes, it will work, but you still need a loading mechanism.
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Unread postAuthor: budabob07 » Sat Nov 13, 2010 5:25 pm

do you know if theres a cheaper one than the MV-10. Its $20 plus $10 shipping, and i really dont feel like paying 30 bucks for an air valve
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Unread postAuthor: Gun Freak » Sat Nov 13, 2010 7:40 pm

Look on Ebay. There are some for 15 bucks. Or you can make one...
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Unread postAuthor: jackssmirkingrevenge » Sat Nov 13, 2010 7:51 pm

Here's a pui budget option
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Unread postAuthor: budabob07 » Sat Nov 13, 2010 8:09 pm

that would work JSR, but the reason that i wanted the three way valve was so that no air would leak out when i held down the trigger. with that method, if i pulled the trigger, air would flow out of the gas feed, and that would waste air (which is important to me because i dont have a HP system that i can use)
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Unread postAuthor: Gun Freak » Sat Nov 13, 2010 8:22 pm

Standard blowguns can be modified into 3 way valves.
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Unread postAuthor: budabob07 » Sat Nov 13, 2010 8:39 pm

Gun Freak wrote:Standard blowguns can be modified into 3 way valves.

thanks, i found a thread here on how to do a pretty simple mod that will work fine for piloting a QEV. sorry for all the (newbie) questions ive been asking, uve been a great help
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Unread postAuthor: jackssmirkingrevenge » Sun Nov 14, 2010 12:23 pm

Have you considered a "valveless/pop-off" system? You'd get no air wastage whatsoever and all you'd need is a blowgun ;)
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Unread postAuthor: budabob07 » Sun Nov 14, 2010 1:27 pm

thanks, but i already found a 3 way valve that was at a reasonable price on ebay. good concept though
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