A piston valve that could be filled from chamber side.

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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Mr.Sandman
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Tue Jul 29, 2008 7:14 pm

who me? because ive never tried to "shut them down"
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mobile chernobyl
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Tue Jul 29, 2008 7:18 pm

well then i'm obviously not referring to you :D durr

I'm referring to the "one's" who did "shut them down"
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potatoflinger
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Tue Jul 29, 2008 7:19 pm

It will work. There needs to be a spring behind the piston, and you may have to fill it a little bit slower so that the air going into the pilot doesn't open the valve.

Diaphragm valves and piston valves are very similar, and they work using the same principles, and last time I checked sprinkler valves can be filled from the chamber side without any problems.
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brogdenlaxmiddie
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Tue Jul 29, 2008 7:50 pm

Ok, I went back and reread it and have come to this conclusion... It canwork, but it would be more difficult do to the spring. I also don't see it as fast as the other non-springed pistons. :error:

EDIT- And I wasn't trying to "shut them down". I was saying that I didn't think that it would work. If I were to shut them down- It would have been like :cussing: :cussing: :cussing: :cussing: :cussing: :cussing:
hotknife ralphie
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Tue Jul 29, 2008 8:16 pm

Isn't that how Chaos' S400 was filled?(from the chamber side) 'cos his gun seemed to work just fine.
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MrCrowley
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Tue Jul 29, 2008 11:23 pm

Okay discussion of whether it will work or not ends here because it does work and has been done before. So saying 'it wont work', isn't true, because it does and it has.


The right spring will be hard to find I probably wouldn't bother but if you have to fill from chamber side for some reason, then go for it.

You probably could make your own spring if you had to.
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jackssmirkingrevenge
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Tue Jul 29, 2008 11:55 pm

Just to add my weight to the it will work argument, I've done it ;)
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Leonard
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Wed Jul 30, 2008 4:50 pm

Thank you guys. I was pretty sure that there was a way to make it work with a piston since a sprinkler valve works this way, my question was (mainly) if there was a need for an equalization hole, but i guess not.
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jrrdw
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Wed Jul 30, 2008 4:58 pm

Feel free to ask any other questions about it. I can't wait to see this cannon...... :D
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