7B proportional control switch that provides a 135-ohm potentiometer signal

A licensed HVAC technician must perform the swap and conduct a combustion analysis to ensure the system is operating safely

featuring a robust Parker valve diaphragm and plunger assembly designed to restore tight shut-off and precise flow control

this is a thermal safety switch and operates independently of the fuel source (Natural Gas or Propane)

Compatibility is determined by the valve series prefix (such as EF8210) and the voltage requirements found on your existing nameplate

Johnson Controls A-4423-1 Air Dryer THPU32HP7Y 7B proportional control switch thatThe Johnson Controls A 4423 1 Air Dryer is a critical component for maintaining the integrity of pneumatic control systems by effectively removing moisture and preventing line freeze ups. This refrigerated air dryer utilizes a hermetically sealed compressor and R 134a refrigerant to provide consistent compressed air treatment for building automation and HVAC controls. Operating on a standard 115 Vac power supply, it is designed for a 125 psig maximum