Yea there is a huge differance between a modded sprinkler valve and ball valve. The only way you can semi decent results from a ball valve is to clamp a pole to it so you have leverage and open it a lot faster.

I'll go with 141 bucks

jon_89 wrote:Wow two inch. What was the performance like?

I used one on a two inch barrel. Dual 36 inch 3 inch chambers charged to 115 psi split 3/4 inch tounge and groove oak flooring using a 1 inch stack of 2 inch washers

53 mm is that like 2 inches?

What are spud bux anyway? Rating?

You could use a blow gun as your exhaust... I had great results on a 1 inch valve so a two inch=twice the flow should be sick

so if i were to make this using a 2 inch pvc T i would mold the hot glue in like a 2 inch coupling im guessing...but what would i need for the other parts to make this work the same way but with 2 inch pvc instead...as you can tell im a n00b when it comes to this piston stuff hahaha Edit: yea i'm go...

hey thanks alot guys

i have yet to expirement with copper pipe...this makes me want to try it out and blow a few bucks on one hahahah

teflon tape=solve all

so it goes in the piolet side forces the piston shut then air goes around and fill the chamber? then i guessing u have a blowgun valve on the piolet side that releses pressure from behind the piston making it drop back and the chamber air escapes out the barrel

but how does air get behind the piston to force it shut against the barrel?

how much of an increase if any do u think this adds to velocity of the projectile vs. a moded sprinkler valve?

so that "sealing face" in ur design is some neoprene? and that actually seals it?

thanks for the response but i really have no idea how to go about making one. i guessing that one of these would really increase the velocity on one of my guns because it looks like a lot mor air can get through faster