669568R Nordyne 4 Ton R-410A Thermostatic Expansion Valve

Product Description

The 669568R is a factory-original R-410A thermostatic expansion valve engineered for 4 ton residential and light-commercial heat pump or air-conditioning systems. It delivers precise refrigerant metering to match evaporator load, stabilizing superheat and maximizing cooling efficiency. Featuring a balanced-port diaphragm assembly, external sensing bulb, and robust copper flare connections, it ensures consistent performance across wide load and ambient conditions.

Key Features

• Balanced-port design for accurate superheat control

• Rated capacity: 48 000 BTU/h (4 ton)

• 3/4 in OD flare-type inlet and outlet connections

• External copper sensing bulb with steel capillary tube

• Adjustable superheat setting with locking nut

• Maximum working pressure: 600 PSIG

• Operating ambient range: –40 °F to 150 °F

• Corrosion-resistant protective cap and integrated bracket

Technical Specifications

Compatibility

Fits Nordyne and OEM condensing units designed for a 4 ton R-410A TXV. Always verify coil specs, connection type, and capacity before ordering.