The internal automatic heat-cool changeover ensures seamless temperature regulation between 45°F and 99°F

Chemical Compatibility: High-grade Viton seals allow for the safe handling of various media

even at higher operating temperatures

Key Benefits Internal Safety: Factory-assembled Overpressure Protection Device (OPD) limits downstream pressure in the event of a primary regulator failure

For the most accurate thermal transfer and response time

Carrier EF19ZG227 Coil 320074-702 The internal automatic heat-cool changeoverThe Carrier EF19ZG227 Reversing Valve Coil is a critical OEM replacement part designed for heat pump systems requiring precise refrigerant flow control. Operating at 208 230V, this solenoid coil provides the necessary electromagnetic force to actuate the reversing valve, allowing your system to switch seamlessly between heating and cooling modes. Built to meet rigorous factory specifications, the EF19ZG227 ensures high efficiency performance and long