Lennox 10W77 Expansion Valve 319825-402 Flexible Compatibility: Accepts both 24V

Flexible Compatibility: Accepts both 24V AC and DC input

It features three mounting ears/tabs integrated into the housing for standard 48 Frame bracket configurations

Whether performing a routine heating system repair or an emergency HVAC part replacement

As a vital part of the Johnson Controls furnace parts ecosystem

If you measure 24V at the coil but the contacts do not pull in

Lennox 10W77 Expansion Valve 319825-402 Flexible Compatibility: Accepts both 24VThe Lennox 10W77 Expansion Valve is a critical OEM R 22 expansion valve designed for precise refrigerant metering in residential and commercial cooling systems. This thermostatic expansion valve (TXV) includes an internal check valve, making it a direct replacement for heat pump applications and air conditioning units. Engineered by Parker for Lennox, the 10W77 regulates flow based on evaporator load to prevent slugging and optimize superheat levels.