Control valves are elements used in process control loops to adjust process variables such as flow, liquid levels, pressure, temperature etc. Control valves essentially consist of a valve and an actuator, more valve control elements may also be present in certain cases. These valves achieve the desired controlling effect essentially by throttling the flow.
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Control valves controls the flow of liquid from the pipelines the proper sealing of these valves is necessary to work efficiently.
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Henry Jordan
Hydraulic Seal Kits