Valves
A Valve is a device or natural object that regulates, directs, or controls the flow of a fluid by opening, closing, or partially obstructing various passageways. SMC, Festo, Parker, MAC Swagelok, ASCO, Humphrey, Proportion-Air, Siemens, Plast-O-Matic, Clippard, Numatics, Spears, Entegris, Asahi, Burkert,