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ballvalve pneumatic

Built a pneumatic cannon? Then post it here! This section is for completed, finished cannons that you have built. Please include pictures and information.
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ballvalve pneumatic

Unread postAuthor: thespeedycicada » Thu Aug 16, 2007 12:24 pm

here is my ball valve pneumatic although its a ball valve it can shoot golf balls very far (much farther than my golf ball combustion) the golf ball barrel is not pictured here.
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Attachments
P1010106.JPG
the gun
P1010106.JPG (28.82 KiB) Viewed 792 times
P1010107.JPG
the valve
P1010107.JPG (24.72 KiB) Viewed 792 times
P1010108.JPG
twin chambers
P1010108.JPG (39.78 KiB) Viewed 792 times
P1010109.JPG
schrader
P1010109.JPG (14.49 KiB) Viewed 792 times
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Unread postAuthor: frankrede » Thu Aug 16, 2007 12:32 pm

Nice DWV fittings!( don't take it past 65 psi)
Plastic ball valves are a [female doggy]:(
but looks fun.
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Unread postAuthor: thespeedycicada » Thu Aug 16, 2007 12:49 pm

actually its sch 40 i have taken it to 90 psi
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Unread postAuthor: frankrede » Thu Aug 16, 2007 12:55 pm

actually you have no idea what your talking about and when I tell you its DWV, its because its DWV.
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Unread postAuthor: spud yeti » Thu Aug 16, 2007 12:56 pm

This looks like a decent cannon. Approximately how far can it shoot golfballs?

actually its sch 40 i have taken it to 90 psi


sch is just the wall thickness, so you must get pressure rated fittings, they two different things. Otherwise you might get some pretty silver and blue additions to your body in the form of schrapnel :? .
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Unread postAuthor: Panzerfaust » Thu Aug 16, 2007 12:56 pm

Sch 40 does not mean pressure rated, you can tell by the shape that your fittings are DWV. Be carefull taking that above 60 ish psi... and never use it in cold weather. Also as frankrede said, plastic ball valves kind of suck. If you can get a meral on it will be much easier and faster openeing, which will improve your performance.
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Unread postAuthor: thespeedycicada » Thu Aug 16, 2007 1:01 pm

It is pressure rated to more than 100 psi i think if it wasnt painted i would show you.As for the distance i dont know but its far and at 90 psi it can make a hole in half inch ply wood at close range.
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Unread postAuthor: spud yeti » Thu Aug 16, 2007 1:02 pm

We are talking about your fittings, not the actual pipe by the way.
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Unread postAuthor: frankrede » Thu Aug 16, 2007 1:04 pm

thespeedycicada wrote:It is pressure rated to more than 100 psi i think if it wasnt painted i would show you.As for the distance i dont know but its far and at 90 psi it can make a hole in half inch ply wood at close range.
How many freakin people does it take to tell you something? Get it though your head, your Wye is DWV, not pressure rated.
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Unread postAuthor: thespeedycicada » Thu Aug 16, 2007 1:08 pm

ok sorry im still a noob with this.But hey i learned something! thanx
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Unread postAuthor: spud yeti » Thu Aug 16, 2007 1:10 pm

ok sorry im still a noob with this.But hey i learned something! thanx

Its all good, maybe next time just be a little more accepting of the facts given :wink:
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Unread postAuthor: frankrede » Thu Aug 16, 2007 1:13 pm

thespeedycicada wrote:ok sorry im still a noob with this.But hey i learned something! thanx
No problem, just trying to help you out, as harsh as I might be, excuse me.
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Unread postAuthor: noname » Thu Aug 16, 2007 3:08 pm

Cut the Wye fitting off and replace it with a T and a 45* elbow if you still want that configuration. It is NOT Sch 40, as a matter of fact. DWV PVC fittings are now SDR 35, ABS is usually Sch 40.
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Unread postAuthor: frankrede » Thu Aug 16, 2007 3:55 pm

I have seen sch-40 pvc dwv noname. but that is beside the point/
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Unread postAuthor: mike1010 » Thu Aug 16, 2007 10:18 pm

actually i have seen sch-40 dwv too at home depot and it was solid wall and rated to at 200 psi for 2 inch but i still stay away from it. if you want to use wye's just make an abs gun and keep the psi below 60 then if you do take it up too high you wont actually kill yourself
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