Valves
Valves are mechanical devices that control the flow and pressure within a system or process. They are essential components of a piping system that conveys liquids, gases, vapors, slurries etc.
Types of Valves[edit | edit source]
There are several types of valves including gate valves, globe valves, check valves, ball valves, butterfly valves, and pressure relief valves.
Gate Valves[edit | edit source]
Gate valves are used in piping systems for a straight-line flow of fluid when there is minimum restriction required. They are designed to either be fully open or fully closed.
Globe Valves[edit | edit source]
Globe valves are used for regulating flow in a pipeline. They are linear motion valves and are primarily designed to stop, start and regulate flow.
Check Valves[edit | edit source]
Check valves are used to prevent back flow in the system. They allow the fluid to flow in one direction and prevent flow in the opposite direction.
Ball Valves[edit | edit source]
Ball valves are valves that use a spherical disc to control the flow of fluid. They are quick opening valves that provide a tight seal when closed.
Butterfly Valves[edit | edit source]
Butterfly valves are used for isolating or regulating flow. They are quick to open and close and are lighter in weight than other types of valves.
Pressure Relief Valves[edit | edit source]
Pressure relief valves are used to control or limit the pressure in a system. They are safety valves designed to open at a predetermined set pressure to protect pressure vessels and other equipment from being subjected to pressures that exceed their design limits.
Applications of Valves[edit | edit source]
Valves are used in a variety of contexts, including industrial, military, commercial, residential, and transport. The industries that use valves include oil and gas, power generation, water and sewage, automotive, and pharmaceutical.
See Also[edit | edit source]
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Contributors: Prab R. Tumpati, MD