Is the 70-23110-30K compatible with older Rheem units using the 70-23110-30

requiring no external power supply to operate

This part number (0780336) refers specifically to the bronze valve arm

providing a broad application scope across residential and commercial units

you would typically require an SPDT model like the FF15MH

Johnson Controls A19ABA-45 Utility Thermostat Els PW 17895 Is the 70-23110-30K compatible withThe Johnson Controls A19ABA 45 Utility Thermostat is a rugged, mechanical single stage temperature control engineered for demanding commercial refrigeration and HVACR environments. This remote bulb thermostat features a 3 foot capillary and a liquid filled sensing element, ensuring highly accurate thermal response in walk in coolers, freezers, and greenhouses. Designed with an SPST (Open Low) switch action, the contacts open on a temperature drop,