Quick Release Piston Blowback?
I have put a great deal of money into constructing a 6" air launcher, but to my dismay things didn't quite go as planned with the valve design. I have attached a picture below of the valve's design. The idea is that when the air is released from behind the piston, the piston should move back allowing air to exit through the 5" pipe. The valve successfully holds pressure, but fails to fly back and I believe this is a result of the piston and barrel it is up against being equal in size. I wouldn't have designed this in this way, but the large schedule 80 pvc tee only allows 1/4 inch around the sides of the piston at best. I am curious if anyone has any ideas to make this piston valve work, I really don't want to pay 200 dollars to get a butterfly valve on it and would greatly appreciate any ideas that may make this work. I promise videos of the beast once I get it up and running. Launching 6" objects using up to 80psi will be a blast, literally if I ever get crazy enough to bring it up that high.