Hydraulic actuated ball valves are similar to pneumatic actuators, only they use pressurized fluid instead of air or gas. The fluid—either water or oil—is fed to one or both sides of a piston ...

“Diaphragm and piston flush valves each have their strengths and are best suited for different environmental conditions,” says Mike Gipson, Flushometer Product Line Manager for Sloan. “It’s important ...

That's to say, the Wankel rotary engine design doesn't have valves — but quite a few rotary engine designs have incorporated them. Both rotary engines and piston engines utilize internal ...

The two major valves used most commonly are the poppet and piston spool varieties. These valves are primarily involved with controlling compressed air. “The main difference between a spool and a ...

[Ben] created a piston valve for this cannon that can be built with parts sourced from your local home supply store. Anyone can build this thing, and everyone should. Instead of using a ball valve ...