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my new plans

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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my new plans

Unread postAuthor: unisonmind » Tue Feb 06, 2007 12:51 pm

ok so im going for around 300psi on this one. so do you think it will work to put 2 150 psi QEV's or will the QEV's not hold the load evenly



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Unread postAuthor: schmanman » Tue Feb 06, 2007 1:00 pm

no, that is not how it works. you need a three hundred psi valve, not two 150 psi ones.

big difference. there will just be 300 psi on both valves. build a steel piston valve if high psi is what you are going for.
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Unread postAuthor: dippydodo03 » Tue Feb 06, 2007 1:00 pm

a little confusing.
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Unread postAuthor: unisonmind » Tue Feb 06, 2007 1:06 pm

schmanman thanks thats what i was thinkin but i still have 2 qev's so ill just use one and stay at 150 psi its safer anyways
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Unread postAuthor: schmanman » Tue Feb 06, 2007 1:18 pm

yeah, that'd be a good idea. qev guns are cool, good luck! :)
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Unread postAuthor: VH_man » Tue Feb 06, 2007 4:19 pm

Yeah, if you knew much about physics principles you would know that pressure pushes evenly on all sides of the camber, so even having two valves, you will still have 300 PSI on each valve. stick with 2 QEV's though..... it will make it extremely powerful. Let me see that thing when its done!!!!
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Unread postAuthor: Hotwired » Tue Feb 06, 2007 6:57 pm

QEV's can actually handle 300psi anyway

At least this type can: http://www.technobots.co.uk/contents/media/4034-001.jpg

Thats no guarantee that the QEV types where you are will take that pressure though.
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