A pilot-operated reversing valve relies on system pressures to change its position, offering advantages for specific scenarios. Actuators like pneumatic and hydraulic play crucial roles in valve operation.
Pilot-operated reversing valve relies on the system's operating pressures to change the position of the valve. In pilot-actuated TCVs, a thermal actuator moves a pilot valve, transferring energy in the form of pressure to a piston, which then repositions the main valve.
Compared to direct-actuated TCVs, pilot-actuated TCVs have smaller temperature sensing devices, a faster response time, and can withstand higher pressures, making them suitable for high-pressure or rapid temperature change scenarios.
Actuators are critical in providing the force necessary to open or close a valve, with pneumatic actuators having delayed responses ideal for small pressure changes, and hydraulic actuators offering instantaneous response due to using incompressible fluid.
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