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Opening a Ball Valve faster

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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Opening a Ball Valve faster

Unread postAuthor: TheTrooper » Mon Nov 12, 2007 10:47 pm

Any ideas on how to open a simple ball valve faster than just with your hand?
I'm looking for a smooth way to open it so i may be able to look down the barrel while firing. I remember seeing a pneumatic that could do it before but i forgot where i found it and how it worked.

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If you do find anything please post it and how to make it. Thanks.
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Unread postAuthor: ShowNoMercy » Mon Nov 12, 2007 10:48 pm

Spring power! Get a reasonably tight spring and have it so that when you pull a pin the spring yanks the ball valve open.

http://www.sentex.net/~mwandel/cannon/air_gun.html
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Last edited by ShowNoMercy on Mon Nov 12, 2007 10:52 pm, edited 1 time in total.
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Unread postAuthor: TheTrooper » Mon Nov 12, 2007 10:49 pm

Can you post a Picture of what one looks like?
Thx for link. (Is there anyplace that actually shows how to build it? Because that would be real helpful too.)
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Unread postAuthor: Hubb » Mon Nov 12, 2007 11:00 pm

It may be a little far fetched for this design, but somewhere (I tried to find the link but I couldn't) there was someone who actually built a small pneumatic ram to actuate his ball valve.
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Unread postAuthor: LikimysCrotchus5 » Mon Nov 12, 2007 11:00 pm

OOOOOOOOOOOOOO, LOL OMG IM AN IDIOT, WOW, i was thinking of him looking down the other way, ook my bad. Um for the design, it would be kindof hard to do so. But possible, just gotta spring load it.
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Last edited by LikimysCrotchus5 on Mon Nov 12, 2007 11:02 pm, edited 1 time in total.
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Unread postAuthor: TheTrooper » Mon Nov 12, 2007 11:01 pm

Oh come on LikimysCrotchus5 arn't you smarter than that lol, im not stupid enough to look "down" the barrel, i meant for aiming purposes! :D
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Unread postAuthor: ShowNoMercy » Mon Nov 12, 2007 11:02 pm

@ Hub , it was that strange looking gun right? With air lines all over the place and like two different air chambers?
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Unread postAuthor: TheTrooper » Mon Nov 12, 2007 11:03 pm

ShowNoMercy do you have a tutorial on how that person built there cannon (The spring part)
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Unread postAuthor: Hubb » Mon Nov 12, 2007 11:04 pm

It was something to that effect. I remember the guy had DWV and was criticized for it. It was also blue and yellow.
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Unread postAuthor: TheTrooper » Mon Nov 12, 2007 11:05 pm

Oh hubb i think i have seen that cannon with all the painting and the hoses, but using a smaller pneumatic to actuate a ball valve on a small pneumatic is kind of pointless
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Unread postAuthor: ShowNoMercy » Mon Nov 12, 2007 11:07 pm

Its really simple, the spring is used to pull the valve open, get that ?
So the valve is pulled closed and then a pin is used to hold it that way, and the spring is now pulled open and is putting a force on the valve handle trying to close it. Once the pin is pulled out the spring pulls the valve open with great force. As for specifics I cant help you, I would say its gonna be a lot of guess and check. And in the long run I would suggest a modded sprinkler valve, up to you though.
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Unread postAuthor: Hubb » Mon Nov 12, 2007 11:10 pm

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Unread postAuthor: TheTrooper » Mon Nov 12, 2007 11:10 pm

I guess, but as someone was saying before with my design and no actual stock it would be hard to do, i just want a accurate way to fire this thing because it took my like 10 tries to hit a soda can with one of the darts. When i did hit it, it flew straight through it was awsome
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Unread postAuthor: ShowNoMercy » Mon Nov 12, 2007 11:11 pm

If your really set on making it spring loaded then good luck, but really bite the bullet and get a sprinkler valve. So much easier and it will allow you to shoot accurately.
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Unread postAuthor: TheTrooper » Mon Nov 12, 2007 11:13 pm

How much does a sprinkler valve cost anyway? and i'm not the greatest with tools so how hard do you think it would be to mod it?
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