Schneider Electric (Barber Colman) 2390-501 Gradual Switch Els PW 17895 Fast Mounting: The 1/2" threaded

Fast Mounting: The 1/2" threaded hub and color-coded wires allow for secure

this solenoid coil is rated for dual-frequency 50/60Hz operation at 220-230V AC

but it is standard practice to inspect and replace all mating seals to ensure airtight combustion

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making it an excellent choice for heat pump systems that require precise flow control in both heating and cooling modes

Schneider Electric (Barber Colman) 2390-501 Gradual Switch Els PW 17895 Fast Mounting: The 1/2" threadedThe Schneider Electric 2390 501 Gradual Switch is a precision engineered pneumatic manual positioner designed for proportional control in commercial HVACR systems. Utilizing a reliable manual dial, this device allows technicians to modulate output pressure from 0 to 20 psig, providing direct control over pneumatic actuators, dampers, and valves. Built for durability and accuracy, the 2390 501 operates with a 20 psig main air pressure and delivers an 8