Uses a 5" ID valve to release the ~90 cubic ft of air from the dual LP tanks.
Designed for 100 PSI, but has been hydrostatic tested to 200 PSI.
At 80 psi it throws a 10 - 15 lb bowling ball or pumpkin about 3000 feet!
Future upgrades include a 10" release valve.
send me any email to the above address. -Brad