ensuring a reliable fit for older 115V furnace and AC units

you should verify if the 8145 series is required for your specific wiring schematic

38" WC safety margin

a spring-return model or an electronic fail-safe (EFS) equivalent should be selected

ensuring the system remains in full compliance with local plumbing codes and safety regulations

Johnson Controls M9000-532 Linkage 30067439-890 ensuring a reliable fit forThe Johnson Controls M9000 532 is a heavy duty linkage kit engineered for mounting tandem electric actuators onto flanged iron globe valves. Designed for high torque applications, this linkage facilitates the installation of M9116, M9124, and M9220 non spring return actuators or M9220 spring return models. Specifically, it supports 3 inch valves when utilizing tandem M9116, M9124, or M9220 units, and 4 inch valves with tandem M9124 or M9220