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Posted: Tue Jul 24, 2012 10:34 am
by Goats spudz
You want a custom 316L stainless steel Piston valve with an Aluminium piston That has a Delrin sealing face.

Posted: Tue Jul 24, 2012 3:44 pm
by ferret_guy
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?

Posted: Tue Jul 24, 2012 3:49 pm
by Goats spudz
The Delrin would seal at high pressures, soft sealing faces would crush and wear.