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:idea: (Torsion)-Spring-powered 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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:idea: (Torsion)-Spring-powered ball valve

Unread postAuthor: paulwagnerlux » Tue Nov 25, 2008 10:43 am

This is my idea about a new trigger system. The red line is the handle and the green is a torsion-spring from a mousetrap. You pull the trigger to close the valve and then when you leave it the valve will open very quick, like a mousetrap.

This idea currently only exists in this post. So before I will try to build it, I want to know what you think about it.
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Unread postAuthor: jimmy101 » Tue Nov 25, 2008 11:29 am

1. A mouse trap torsion spring would only be strong enough to operate a fairly small ball valve.

2. The more force you use to open the valve the more force you need to dissipate somewhere to keep from breaking the valve's stop. Might consider a pretty thick rubber or dense foam stopping bumping.
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Unread postAuthor: paulwagnerlux » Tue Nov 25, 2008 11:48 am

First point shouldn't be a problem because I will use a 1/2 inch valve. 2. I didn't took that in consideration.

Thank you for your comment.
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Unread postAuthor: psycix » Tue Nov 25, 2008 11:51 am

Spring loaded ballvalves already exist.
Though they were not torsion-spring loaded, which is quite a good idea. Could make the spring mechanism more compact.
the valve will open very quick

"Quick" is relative.
It may open 5 or 6 times as fast as a manually opened ballvalve, but still more then 5 times as slow as a piston valve.
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Unread postAuthor: paulwagnerlux » Tue Nov 25, 2008 11:57 am

Could make the spring mechanism more compact.


That's what I thought too, but I have no idea how I could do it. If I would shorten the spring, the valve would not open fast enough.
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Unread postAuthor: jackssmirkingrevenge » Tue Nov 25, 2008 2:40 pm

paulwagnerlux wrote:If I would shorten the spring, the valve would not open fast enough.


I think he meant a torsion spring would be more compact than conventional spring loaded ball valve designs like this one.
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