Electromechanical or mechanical device that controls the flow of liquid, gas, slurry, dry loose material. 3 maintypes.1. Isolation, 2. Switching, 3, Control.
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Electromechanical or mechanical device that controls the flow of liquid, gas, slurry, dry loose material. 3 maintypes.1. Isolation, 2. Switching, 3, Control.
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