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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.
s18022
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Sat Oct 28, 2006 3:51 pm

I am building a gun (better refered to as a cannon sinse it is like 15ft long) that i need to get a valve for it, it is a 4inch * 5ft tank and a 2inch *8ft barrel And the hand valve i got doesn't work(no real suprise) but i was wondering if you thought that two sprincler valves would work. so it would break into 2 3/4 inch piches go to the valve and then go back to the barrel.
Thanks for any replies :D
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LucyInTheSky
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Sat Oct 28, 2006 4:07 pm

You could use a 3" sprinkler valve
If your getting chased off a police dog, try not to run through a tunnel then onto a small see-saw then through a ring of fire. They are trained for that!
s18022
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Sat Oct 28, 2006 4:09 pm

Where would you get e 3 inch sprinkler valve cuz if you can i am there.
Thanks
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LucyInTheSky
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Sat Oct 28, 2006 4:11 pm

Dont know were you get them, im from the uk so i dont use them but that BIG NASTY gun has 2 of them on.
If your getting chased off a police dog, try not to run through a tunnel then onto a small see-saw then through a ring of fire. They are trained for that!
squeaks
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Sat Oct 28, 2006 6:08 pm

ok, first of all, 3 inch sprinkler valves cost upwards of $400. Second, even 2 1" sprinklers would have constriction on your air flow. It's all about surface are of a circle, r^2pi. a 2 1" valves would have the surface area equivelant of 1/2 pi. A 2" valve would have the surface are of pi. So, what I'm suggesting is pay $120 for a 2 inch sprinkler, buy a supah/mauler valve, or make your own piston/diaphram valve.
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Velocity
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Sat Oct 28, 2006 6:31 pm

squeaks wrote:ok, first of all, 3 inch sprinkler valves cost upwards of $400. Second, even 2 1" sprinklers would have constriction on your air flow. It's all about surface are of a circle, r^2pi. a 2 1" valves would have the surface area equivelant of 1/2 pi. A 2" valve would have the surface are of pi. So, what I'm suggesting is pay $120 for a 2 inch sprinkler, buy a supah/mauler valve, or make your own piston/diaphram valve.
<a href="http://www.sprinkler.com/buy/item/irrit ... 0">Upwards of $400? I think not</a>
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c19o
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Mon Dec 25, 2006 10:57 pm

make a piston valve
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