Pilot Help

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.
mikehunt042084
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Mon Nov 26, 2012 8:49 pm

I am working on a high pressure pneumatic and was curious is pressure washer handles would work for a pilot, they are rated in the 1000s of psi and are usually a nice ergonomic grip. Not to mention a much simpler alternative to making my own, I prefer to use readily available materials rather than custom part when possible.
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Zeus
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Mon Nov 26, 2012 9:07 pm

They've been used a few times mate, just bear in mind they might leak a bit, water seals aren't always perfectly airtight.
/sarcasm, /hyperbole
mikehunt042084
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Mon Nov 26, 2012 10:06 pm

Awesome, leaks I can probably deal with. Do you have a better suggestion for a pilot for something in the 3000 or so psi range? I am trying to get an unreggulated HPA shooter together but there have been several issues in the process. Wrong fittings shipped, regulator broke in shipping, etc. I'm just trying to get it finished as simple as possible, all this drama and I haven't even gotten to put it together yet.
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Zeus
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Mon Nov 26, 2012 10:17 pm

There's paintball slide valves and ball valves, not much else around.
/sarcasm, /hyperbole
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saefroch
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Tue Nov 27, 2012 1:28 am

What Zeus said.

You're quite limited in your choice of valves at such high pressures, because valves that use the chamber pressure to hold the seal shut (like a blowgun) become absurdly difficult to use at high pressure.

In one of my builds, I used brass 1/4" ball valves at ~1,000psi, but one of them began to suffer a leak after a bunch of cycles. They were only rated to 450 psi, so make of that what you will.
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Gippeto
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Wed Nov 28, 2012 12:23 am

mikehunt042084 wrote:Do you have a better suggestion for a pilot for something in the 3000 or so psi range?
Poppet (hammer) valve
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Just1ofgod
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Wed Nov 28, 2012 12:30 am

http://www.discovervalve.com/102347.htm ... QgodTkwAbA

just a thought there are other valves out there how ever most of them are not cheap i know there are some custom electric qev type valves but they will run you about 800 bucks hope this helps
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