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Pipe Valves

What is a valve? Valve, in mechanical engineering, device for controlling the flow of fluids (liquids, gases, slurries) in a pipe or other enclosure. Control is by means of a movable element that opens, shuts, or partially obstructs an opening in a passageway. Valves are of seven main types: globe, gate, needle, plug (cock), butterfly, poppet, and spool. How do valves work? A valve is a mechanical device that blocks a pipe either partially or completely to change the amount of fluid that pa...

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