Semi Auto Piston Valve Paintball Gun

[1nxtmonster]

Finally finished this project. Semi Auto piston valve paintball gun made from PVC. Some specs:

Air source: regulated 70 PSI 5 gallon air tank

Piston: Plastic tube with neoprene sealing face

Barrel: 3/4 inch CPVC pipe

Magazine: 13 round magazine with simple tab detents

[youtube][/youtube]

[tigerblues28]

This thing is sick! I'm assuming its just a QEV kinda deal here? Ill have to check out your previous post. Looks sweet though. Just extremely careful in the cold with the pvc pipes.

Nick

[1nxtmonster]

Thanks! Yep, just a QEV with regulator for multiple shots. I can get about 30-40 shots off at 65 PSI if I fill the tank to 100.

[oli12345678910]

Could you please explain to me how you made your piston valve and how iit works thanks

[1nxtmonster]

My piston valve is made out of a piece of plastic pipe, plugged with epoxy and with a rubber sealing face on the front. The plastic pipe was milled to fit just inside of the area it sits in. For an explanation on piston valves, see this thread:

http://www.spudfiles.com/pneumatic-cann ... c8157.html

[Maasoon]

hey how does the regulator setup work and is the piston valve like a qev but shuts faster? how is the feeder setup? sick gun tho looks real fun

[1nxtmonster]

So the regulator setup is that the gun works best at a certain pressure (in this case 70 PSI, any higher and the paintballs will explode). I can fill the air tank to a pressure higher than 70 PSI, say 100 psi, then use a regulator to give the gun only 70 PSI.

It is a gravity fed hopper with detents (small tabs that keep the paintball from rolling out the barrel until fired)