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

There are several types of valves including gate valves, globe valves, check valves, ball valves, butterfly valves, and pressure relief valves.

Gate Valves

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

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

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

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

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

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

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

• Piping and plumbing fitting
• Hydraulic machinery
• Pneumatic system