Lennox 52W76 TXV 321702-401 Thermal Resilience: Constructed from high-heat

Thermal Resilience: Constructed from high-heat gaskets materials that maintain structural integrity and sealing pressure under continuous high-fire operation

eliminating guesswork regarding flow rates and tonnage

Key Benefits: Ensures accurate BTU input rating by providing a calibrated #33 drill size opening for natural gas applications

Designed with a standard 1/4" barb connection for vacuum tubing and 3/16" male terminals

Lennox 52W76 TXV 321702-401 Thermal Resilience: Constructed from high-heatThe Lennox 52W76 is a 5 ton thermostatic expansion valve (TXV) engineered for high capacity R 410A refrigerant systems. Designed as a direct OEM replacement part, this metering device features 1 2" x 1 2" ODF connections and a 30 inch capillary tube for precise superheat regulation. As a veteran technician knows, maintaining the correct refrigerant flow is critical to preventing evaporator flooding or compressor slugging; the 52W76 achieves this by