Bead Blast cannons

[golf45]

Anyone else changing from Bead Blasters for tires to potato of golf ball launchers
I have found that the Velvor BB valves and similar BB have the perfect valve for dumping the air out in one go than the old way especially with the push button release and metal valve body than the plastic sprinkler valve set up. I did try and get a spare valve which is the diaphragm type with a in line inlet and outlet with the threaded connect on top to attach the push button release which you can extend with any length with tubing with the button on the end to release the air but for some reason you can only get the same valve but the exit port vents out at 90 degrees not the straight through 180 type, cant see any anywhere. And there is the other valve type Bead blaster that uses the O ring system which is more expensive which is said to be much more efficient, anyone done a comparison test. I have made a golf launcher with opening breech and a spare barrel to fire 50mm postal tubes that will be made into rockets with fins and nose cap added launched at 80psi.