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can the barrel be the same size as the ball 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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can the barrel be the same size as the ball valve?

Unread postAuthor: Pilgor » Mon Feb 04, 2008 7:27 pm

If I wanted a 2" barrel, can the ball valve be two inches (it is a metal ball valve) will the barrel just screw in to the valve?
sorry for all the questions. I'am new at this and I wanna build a kick @$$ cannon. Thank You in advanced.
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Re: can the barrel be the same size as the ball valve?

Unread postAuthor: Ragnarok » Mon Feb 04, 2008 7:36 pm

Pilgor wrote:I'am new at this and I wanna build a kick @$$ cannon.

If that's what you want, a ball valve is not a good choice of valve. You should really use at least a modded sprinkler valve in those cases.

You can use a valve of the same size as the barrel if you wish, but I suggest you don't use a ball valve as your main valve, or at the very least, spring load it.
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Unread postAuthor: thespeedycicada » Mon Feb 04, 2008 8:05 pm

@pilgor uhhh yes you can why wouldn't you? you need to do some research i mean please? just a little? all you have to do is look a but you dont have to even read if all you do is look at the pretty pictures! see? its that easy!
If you dont belive me it took me 3 minutes of searching to find this its not that hard make an effort please.
im really not that much of an a$$hole usually but i think it would be appreciated if you made an effort okay?
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Unread postAuthor: Alabaster » Mon Feb 04, 2008 8:12 pm

Well if its his first he really should start out with a ball valve. Pilgor your first cannon is not gonna be your best obvouisly so work from basic up.
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Unread postAuthor: thespeedycicada » Mon Feb 04, 2008 8:56 pm

why should he start with a ballvalve? if he has the ability to do better why not?
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current projects: co-axial piston valve.Status DONE!
S.P.E.C.S update mk 1 construction begining in febuary all the maths for it are done plans are drawn up and parts are listed.
NEXT project:auto piston valve.
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Unread postAuthor: Alabaster » Mon Feb 04, 2008 9:04 pm

I just thought maybe since its his first maybe he isn't capable thats all it really depends on his budgets and knowledge i guess.
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Unread postAuthor: blindbatjosh121 » Mon Feb 04, 2008 9:11 pm

id say the ball valve is good for a first but just make it so you can upgrade it when ever your ready and i wouldnt spend the money on a 2 inch ball valve jus adapt it down to smaller one
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Unread postAuthor: spudy buddy » Tue Feb 05, 2008 7:22 pm

my first one was a moded sprinkler valve and all the parts cost about $25.

for a first a ball valve is fine but like josh 121 said it would be a good idea to leave room for an upgrade.
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