60" WC pressure switch operates on SPST (Single Pole Single Throw) logic

replacing the drier during every system opening is standard practice to prevent HVAC compressor failure and ensure the long-term stability of synthetic polyolester (POE) oils

simplifying terminal connections for service technicians

In many York and Johnson Controls configurations

the fluid temperature range is 32° to 200°F

Emerson Alco 097719 Control Valve 322057-301 60" WC pressure switch operatesThe Emerson Alco 097719, also known as the EX4 I21, is a high performance stepper motor driven electrical control valve engineered for precise refrigerant mass flow management. Designed for veteran contractors, this bipolar stepper motor valve provides continuous modulation across a 10% to 100% capacity range, making it ideal for superheat control, hot gas bypass, and liquid injection. Featuring a 3 8" x 5 8" sweat ODF connection and a 24Vdc supply