Scuba tank refill

Show us your pneumatic spud gun! Discuss pneumatic (compressed gas) powered potato guns and related accessories. Valve types, actuation, pipe, materials, fittings, compressors, safety, gas choices, and more.
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Goats spudz
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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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ferret_guy
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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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Goats spudz
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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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