Control Valves Pdf

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Control Valves Introduction:

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• A Control Valve is a power-operated device used to modify the fluid flow rate in a process system.

There are two basic types of control valves

a) Rotary motion valves having ball, butterfly or plug type closures.

b) Linear motion valves having globe, diaphragm or pinch type closures.

Linear Valve Features

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i. TORTUOUS FLOW PATH 

ii. LOW RECOVERY 

iii. CAN THROTTLE SMALL FLOW RATES 

iv. OFFERS VARIETY OF SPECIAL TRIM DESIGNS 

v. SUITED TO HIGH-PRESSURE APPLICATIONS 

vi. USUALLY FLANGED OR THREADED 

vii. SEPARABLE BONNET

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