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Post questions and info about pneumatic (compressed gas) powered cannons here. This includes discussion about valves, pipe types, compressors, alternate gas setups, and anything else relevant.
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Unread postAuthor: Goats spudz » Tue Jul 24, 2012 10:34 am

You want a custom 316L stainless steel Piston valve with an Aluminium piston That has a Delrin sealing face.
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Unread postAuthor: ferret_guy » Tue Jul 24, 2012 3:44 pm

Wouldn't neoprene have a better seal or do you think the pressure forcing the piston to the barrel will offset any lack of seal?
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Unread postAuthor: Goats spudz » Tue Jul 24, 2012 3:49 pm

The Delrin would seal at high pressures, soft sealing faces would crush and wear.
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