Quote:
Originally Posted by Daniel_LaFleur
Copper pipe is good.
Conduit may or may not be good. If it is plastic (especially PVC), do not use it. If it's metal conduit, that should work.
Copper 1/16" wall is enough for the ~60PSI shock that the barrel should see max.
The biggest thing with the valve is safety and leakage. Make sure the valve is GAS rated for the max pressure it will see. The gas rating is important because most other valves will leak as well as possibly burst.
The most important thing here is safety. Remember that this will be in the public eye. Any failure, especially one that results in unexpected release of pressurized air, is very bad.
If you cannot afford to ensure it is completely safe at all times then don't build it. That being said, with some leftover KOP/FirstChoice parts you should be able to build a decent safe single shooter for a few hundred dollars.
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What valve do you recommend.