As a high-performance replacement float valve stem

you can test the switch's continuity and pressure activation points with appropriate gauges and meters

What is the thread size for the Carrier 10HB50106801

Designed for robust performance and extended operational life

Is this a direct drop-in for the R39008C002

Johnson Controls A19AAA-49 Utility Thermostat 320074-702 As a high-performance replacement floatThe Johnson Controls A19AAA 49 Utility Thermostat is a technician grade single pole, single throw (SPST) control designed for heavy duty HVAC R applications. Engineered to open on temperature drop, this low limit control is essential for preventing freeze ups in refrigeration systems and maintaining setpoint integrity in walk in coolers and industrial storage units. It features a wide temperature range of 30F to 100F ( 34C to 38C), making it a