Most technicians can complete the swap with a 5/16-inch screwdriver and an adjustable wrench

Fail-Safe Protection: The spring return actuator ensures the valve returns to its original state during power interruptions

and interlocking retainer washers for a complete installation

75A draw to ensure compatibility with electronic control boards

this Single Piece Ring Pack ensures a leak-free interface under high-pressure HVAC conditions

Johnson Controls A19AAF-21 Temperature Control 30067439-890 Most technicians can complete theFor contractors servicing HVACR systems, the Johnson Controls A19AAF 21 Temperature Control provides a dependable mechanical solution for high accuracy thermal regulation. This single stage, remote bulb temperature control is specifically engineered for precision in heating or cooling applications, featuring a 40 to 90 degree F setpoint range and a tight 1. 5 degree F fixed differential. As the A19AGF 23 direct replacement, this unit integrates