Flow Control Valve:
A flow control valve regulates the flow or pressure of a fluid. Control valves normally respond to signals generated by independent devices such as flow meters or temperature gauges.
Control valves are normally fitted with actuators and positioners. Pneumatically-actuated globe valves and Diaphragm Valves are widely used for control purposes in many industries, although quarter-turn types such as (modified) ball, gate and butterfly valves are also used.
D |
D |
A |
Opening |
Inches |
MM |
MM |
"C"MM |
1 1/2 |
38.1 |
90.0 |
6.0 |
2 |
50.8 |
108.0 |
8.0 |
2 1/2 |
63.5 |
128.0 |
10.0 |
3
|
76.2
|
135.0
|
12.0
|