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Beer tap connectors.

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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Beer tap connectors.

Unread postAuthor: SubsonicSpud » Wed Feb 04, 2009 7:53 am

G'day All,

This is my first post on the forum but i have been watching for quite some months now. I am in the process of making a new air rifle and have discovered that the connectors, one way valves, beer taps and other components from pub beer systems can make some very useful components :twisted: Managed to acquire a box full of beer tap bits from work a while ago and there are all sorts of small spud gunning goodies.

Here is a few photos of the small piston valve i have been making the last few days.
Image

The air chamber will be plumbed into the coupling in between the piston and the valve.

The piston is seated in a short length of copper pipe which was a press fit inside the connector.

Image

Here is a close up of the piston/valve. They are both made from the one way valve shuttle out of a beer system, the piston just having the sleeve cut off. Image

I have yet to put a pilot valve on the system but i should have that done in the next few days, then i can test the valve. :P
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Unread postAuthor: Gippeto » Wed Feb 04, 2009 2:51 pm

Looks quite promising. :)

I assume you're keeping the sleeve for a piston guide? It will cost you some flow.

If you don't need it (hard to say for sure, but you likely don't), I'd get rid of it.

Welcome. :)
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Unread postAuthor: SubsonicSpud » Wed Feb 04, 2009 4:59 pm

The sleeve on the valve is required for it to seat properly, but i do intend on shortening it. Hopefully it should not cause too great a loss in performance.

Thanks for the welcome


Update:

Well I soldered a schrader valve into the copper reducer to use as a filler and pilot valve for testing, it actualy worked. The valve seated well and did not leak (held it under water when pressurised). I'm definatly going to need to put a small pressure tank into the side of the cylinder to increase capacity, wish i didn't plug up the hole in the side of it now :?
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