Control valve/Definition

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https://en.citizendium.org/wiki/index.php?title=Control_valve/Definition&printable=yes
A definition or brief description of Control valve.

A valve used within an industrial plant or elsewhere to control operating conditions such as pressure, temperature, liquid level and flow rate by fully or partially opening or closing in response to signals received from controllers that compare a "setpoint" to a "process variable" whose value is provided by independent sensors that monitor changes in such conditions.

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