Instead of using a ball valve or other such contrivance to dump air directly from a reservoir into the chamber of this PVC air cannon, [Ben] is using a much more clever design. This is a barrel ...

Description: The MUELLER 300 Ball Valve is an optimized design combining a strong, reliable ball/stem connection with other desired features, including a blow-out-proof stem, double O-rings and a 300 ...

There are many types of plastic valves. Ball valves provide tight shut-offs, but are not suitable for sanitary applications. Butterfly valves permit flow in only one direction. Check valves are ...