Science Fair Project Encyclopedia
Flow control valve
A valve which regulates the flow or pressure of a fluid. Control valves normally respond to signals generated by independent devices such as flow meters , temperature gauges, etc. Control valves are normally fitted with actuators and positioners. Pneumatically-actuated globe valves are widely used for control purposes in many industries, although quarter-turn types such as (modified) ball and butterfly valves may also be used.
10-26-2009 08:16:03
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The contents of this article is licensed from www.wikipedia.org under the GNU Free Documentation License. Click here to see the transparent copy and copyright details