Pipeline Valve

a device in pipelines for controlling the flow of a liquid, vapor, or gas. Large valves have monolithic cast bodies with flanges; small valves are threaded for connection to pipes, pumps, and other machines. In the simplest valves the valve stem is turned manually by a handwheel; a hydraulic or electric motor, which is actuated by a change in pipe pressure, is used for automatic control. Valves are widely used in industrial pipelines and sanitary-engineering installations.

单词	pipeline valve
释义	Pipeline Valve Pipeline Valve a device in pipelines for controlling the flow of a liquid, vapor, or gas. Large valves have monolithic cast bodies with flanges; small valves are threaded for connection to pipes, pumps, and other machines. In the simplest valves the valve stem is turned manually by a handwheel; a hydraulic or electric motor, which is actuated by a change in pipe pressure, is used for automatic control. Valves are widely used in industrial pipelines and sanitary-engineering installations.
随便看	pegged you for pegger peggies pegging pegging as pegging away pegging away at pegging away at something pegging back pegging (disambiguation) pegging down pegging down as pegging down to pegging for pegging her as pegging her down pegging her down as pegging her down to pegging her for pegging him as pegging him down pegging him down as pegging him down to pegging him for pegging it as