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my first pneumatic

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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my first pneumatic

Unread postAuthor: FishBoy » Sun Jun 08, 2008 8:59 pm

So far i've made 4 combustions and i want to make a pneumatic. It will most likely use a sprinkler valve (modded?) & it will probably have 2 or 3 barrels (.5", .75", 1"). Anyway, i am always open to tips and suggestions, especially regarding the attachment of shrader (tire?) valves and psi guages. Also, do 1" or 3/4" sprinkler valves work with threaded pvc adaptors of the same size and pvc cement? Also, what is the pressure rating of a sprinkler valve and how much pressure can you generate with a bike pump? Any other tips/hints/suggestions regarding small pneumatics will be appreciated.
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Unread postAuthor: Lentamentalisk » Sun Jun 08, 2008 9:45 pm

all (well most...) sprinkler valves use standard threaded fittings, so no pvc cement. Always use a 1" sprinkler valve, because sprinkler valves restrict the flow a ton.
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Unread postAuthor: jr » Mon Jun 09, 2008 1:11 am

same rules as combustions.....always tap hole in 2layers of pvc
you will want to tread the hole with a tap when you install your gauge and shrader.
I like to use jar top valves..they mod easier and are easier to clean/maintain

here is one of my basic guns...
http://www.spudfiles.com/forums/fresh-paint-t13297.html
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