is there any difference in the mauler valves shown on bcarms.com and launchpotatoes.com? the only difference, besides the price, that i can see is the hole on the end is much larger on the one from launchpotatoes.com

all the parts are 3000 psi just because thats the only rating available for the fittings i used. i mean its not like i could actually pump it up to that.

im making a pneumatic cannon, first one by the way, and i was wondering how much pressure a 1'' sprinkler valve is capable of holding. i've used all steel pipe and fittings, (thanks mcmaster-carr) which are rated to 3000 psi, so im not worried about that part. the only part of the gun which holds pr...