this specific expansion valve is factory-charged and calibrated strictly for 4-ton R-410A refrigerant systems

as well as legacy MG and G valves

Compatibility depends on the elastomer material in the kit

The Trane SWT2978 is a heavy-duty dual pressure switch engineered for precision safety monitoring within residential and commercial HVAC units

the S1-6007533 features a factory-installed rain shield to protect the internal windings and bearings from moisture ingress

Schneider Electric (Viconics) VC3500E5000 Relay Pack 321894-709 this specific expansion valve isThe Schneider Electric (Viconics) VC3500E5000 Relay Pack is a field proven solution for line voltage fan coil applications, specifically engineered to interface seamlessly with Viconics SE8000 and SER7300 series room controllers. This transformer relay pack features a universal power supply capable of handling 90 to 277 VAC, allowing for standard 2 pipe or 4 pipe FCU configurations without the need for additional external transformers. It provides