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Triggered ball valves (Spring loaded)

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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Triggered ball valves (Spring loaded)

Unread postAuthor: Mitchza89 » Mon Aug 17, 2009 3:55 am

Hey guys,

Lately I've been wrecking my brain over a good concept for a spring loaded ball valve. Yes I have seen a couple on here but I'm looking to make something really nice and compact. Not just a rusty bolt through a piece of old ply.

From all of the research I've done, I really haven't seen any nice triggered ball valves on here. The main reason why I love the concept, is just the performance that it gives and the cheapness of it.

I have all the gear at hand to bust out something nice that rests on a sear and trigger, I just have to keep on working on it I guess....
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Unread postAuthor: inonickname » Mon Aug 17, 2009 4:39 am

Have a look through the French Spudgun forum.

If you don't speak fluent french, you will need a translator.
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Unread postAuthor: CpTn_lAw » Mon Aug 17, 2009 9:40 am

inonickname wrote:[...] If you don't speak fluent french, you will need a translator.


Or i can help you with it, being french and all...
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Unread postAuthor: geardog32 » Mon Aug 17, 2009 11:04 am

or use babel fish
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Unread postAuthor: al-xg » Mon Aug 17, 2009 11:17 am

Image
This is the first spudgun I made with a spring powered ballvalve.
I'll try highlighting the mechanism in MS Paint as the picture is quite small.
If I was going to build this one again, I'd use a few more threaded fittings for maintainability.

A French spudgun made by Paul using a similar opening system:
http://patator.frbb.net/vos-pacs-person ... -t5879.htm
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Unread postAuthor: Mitchza89 » Mon Aug 17, 2009 11:33 pm

Thank you very much for the information guys.

Al-xg,

Thank you very much for the info on your gun and Pauls. It's given me some great ideas. I'll do my best to nut something out :)
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Unread postAuthor: jmadden91 » Mon Aug 17, 2009 11:51 pm

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Unread postAuthor: tomthebomb137 » Tue Aug 18, 2009 12:09 am

Im not sure if you are interested, but i would look into pneumatic cylinders to actuate a ball valve. I have a bunch of cylinders lying around, i usually use them to move the parts of my breech (for my semi-autos) but it has just occured to me that they would do exactly what you are looking for. On top of it all, they are professional looking and can be compact. they also allow for electronic triggering. I can provide more info if you are interested.
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Unread postAuthor: Mitchza89 » Tue Aug 18, 2009 12:10 am

Wow Jacob, great find mate! I reckon i'll definitely be fiddling with something like that.

Tom, that's a great idea. The only problem is the cost, I'm so strapped for cash at the moment :(
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