types of control valves & working principles

Question

Accepted Answer

Control valves are used to regulate the flow, pressure, temperature, or level of a fluid in a process system.

There are several types of control valves, including globe valves, butterfly valves, ball valves, and plug valves.
The working principle of control valves involves the use of a valve body, actuator, and positioner.
Globe valves have a linear motion disk that moves perpendicular to the flow, controlling the flow rate.
Butterfly valves have a disk that rotates to control the flow.
Ball valves have a spherical ball with a hole that rotates to control the flow.
Plug valves have a cylindrical or conical plug that rotates to control the flow.
Control valves can be operated manually, pneumatically, electrically, or hydraulically.
They are commonly used in industries such as oil and gas, chemical, power generation, and water treatment.

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