【Daily Question】August 11, 2015
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The difference between a self-acting control valve and other control valves is ( ). A. The actuator is powered by air or electrical energy. B. The actuator is powered by the pressure of the medium in the process pipeline. C. It has no reverse action. D. It does not have air-operated or electric-operated modes.
B. The actuator generates power based on the pressure of the medium in the process pipeline
The difference between a self-acting control valve and other control valves is (B). A. The actuator gets its power from an air source or electrical power source. B. The actuator gets its power from the pressure of the medium in the process pipeline. C. It has no reverse action. D. It doesn’t have air-operated or electric-operated modes.
The difference between a self-acting control valve and other control valves is (B). A. The actuator gets its power from an air source or electrical power source. B. The actuator gets its power from the pressure of the medium in the process pipeline. C. It has no reverse action. D. It doesn’t have air-operated or electric-operated modes.
The difference between a self-acting control valve and other control valves is that (B. the actuator is powered by the pressure of the medium in the process pipeline)
Choose B; a self-acting control valve relies on the pressure and temperature of the medium flowing through it as the energy source to operate the valve automatically, without the need for an external power supply or auxiliary instruments
B. The actuator generates power based on the pressure of the medium in the process pipeline
B. The actuator is powered by the pressure of the medium in the process pipeline.
B. The actuator generates power based on the pressure of the medium in the process pipeline
B. The actuator is powered by the pressure of the medium in the process pipeline.
B. The actuator generates power based on the pressure of the medium in the process pipeline