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which valve

Post questions and info about pneumatic (compressed gas) powered cannons here. This includes discussion about valves, pipe types, compressors, alternate gas setups, and anything else relevant.
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which valve

Unread postAuthor: ajb12345 » Thu Aug 28, 2008 10:08 am

for my second cannon(gotta get around to posting my first) I can't figure out which type of valve to use. It's going to have a two inch barrel and a 2.5 in barrel, so it has to be powerful enough for both of them. And I have done my reserch and people have used sprinkler and piston valves. And if I do have to use a piston I want to keep it kinds small like 2" with 1.5" porting. Just thought I'd see what you guys siad
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Unread postAuthor: MaxuS the 2nd » Thu Aug 28, 2008 10:34 am

Piston valves are usually a whole lot cheaper than sprinkler valves and relatively easy to make. That should sway you somewhat.
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Unread postAuthor: mark.f » Thu Aug 28, 2008 12:48 pm

A lot of first-time piston valves are 2" housing with 1+1/2" porting. That was the first size I made.

I say, if you do make a piston valve, make your first one with more function than form in mind. You can make a perfectly flush valve the same exact size as a 2" tee, but you can also make a larger valve that takes a much shorter amount of time to make and doesn't sacrifice a significant amount of power.
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Unread postAuthor: ajb12345 » Thu Aug 28, 2008 7:20 pm

so make piston
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