Devices and assemblies that isolate, regulate, divert, relieve or prevent reverse flow of liquids, gases or conveyed media: process and utility valves, hydraulic and pneumatic valves, pressure regulators, gas-path dampers, slide gates, penstocks and valve manifolds. Includes taps, valve bodies, internal parts and dedicated valve or damper actuators and operating accessories. Pipe connection fittings, filtration devices, ejectors and complete fluid-power assemblies have separate families.