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This valve...

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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This valve...

Unread postAuthor: Gun Freak » Tue Jun 08, 2010 3:19 pm

Well I thought of a way to go compact and servicable in a piston vavle very easily. pisture explains all, not to scale.
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Unread postAuthor: clemsonguy1125 » Tue Jun 08, 2010 4:00 pm

Doesnt seem like it would compact the valve much, bushing dont screw all the way in and at the front if you want compactness it would be better to go with a slip bushing
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Unread postAuthor: Gun Freak » Tue Jun 08, 2010 4:05 pm

clemsonguy1125 wrote:bushing dont screw all the way in and at the front if you want compactness it would be better to go with a slip bushing


I can get a bushing all the way in :wink:
what do you mean is I want compactness go with a slip bushing. Where should the slip bushing go, in place of the threaded on in front? Then I would need a female adapter. And it is pretty compact because there is no female adapter in the back.
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Unread postAuthor: clemsonguy1125 » Tue Jun 08, 2010 4:19 pm

I was talking about the front, if you can get it all the way in go for it
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Unread postAuthor: Gun Freak » Tue Jun 08, 2010 4:28 pm

the point of using a threaded bushing is so that you don't need a female adapter in the front for interchangable barrels. you sand out the back half of the threads to put the 1/2 pvc seat in and the front half of threads remains so you don't need a female adapter.
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Unread postAuthor: c11man » Tue Jun 08, 2010 5:16 pm

this seams like a standard piston valve... whats different about it?
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Unread postAuthor: Lockednloaded » Tue Jun 08, 2010 5:29 pm

This is what everyone does for metal piston valves using galvanized steel or brass. Usually there is a bell reducer screwed into the back, in your design, the piston may go back into the BV
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Unread postAuthor: Gun Freak » Tue Jun 08, 2010 5:32 pm

No the point is to make it in PVC without the female adapter on the back before the pilot. the nipple is the only galvanized part on it but if you can find a PVC nipple then it would work.
@c11man there is no female adapter on the front or back.
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Unread postAuthor: c11man » Tue Jun 08, 2010 5:32 pm

ok so this design has a bigger ballvalve pilot than most? there are also many with the nipple straight to the ballvavle so its still nothing new
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Unread postAuthor: Gun Freak » Tue Jun 08, 2010 5:32 pm

I've never seen one like that.
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Unread postAuthor: c11man » Tue Jun 08, 2010 5:38 pm

i know i have seen several but i couldnt name them
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Unread postAuthor: Gun Freak » Tue Jun 08, 2010 5:53 pm

Ok I haven't... I'll keep my eyes peeled.
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Unread postAuthor: MRR » Wed Jun 09, 2010 12:24 am

I think your design is similar to this...
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Unread postAuthor: Gun Freak » Wed Jun 09, 2010 9:12 am

Yes MRR but the point of mine was to make the pilot directly behind the tee with no fittings. There's one thing I just realized though... I didn't drawy the fill :D But that's simple, either tap a schrader/quick connect and ball valve into the PVC BV pilot, or put a quick connect behind the ball valve.
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