Nordyne 669821 TXV Valve 321702-401 the KS70SZ180 is essential for

the KS70SZ180 is essential for maintaining mechanical synchronization in Carrier

Complete Assembly Solution: Eliminates the need to source individual sealing rings and high-temp adhesives separately for 88 series blocks

Dual SPDT Snap Switches: Provides independent control for high-voltage burner shutdown and automatic water feeder activation

The Lennox 50M18 Ring

The Parker 202940 Coil is a professional-grade 120V solenoid actuator specifically engineered for integration with Flo Con A8 and A9 series pressure regulators

Nordyne 669821 TXV Valve 321702-401 the KS70SZ180 is essential forThe Nordyne 669821 TXV Valve is an OEM 4 ton R410A expansion valve engineered for precise refrigerant metering in high capacity split systems and packaged units. As a direct replacement for Nortek 669821R, this thermostatic expansion valve regulates flow based on evaporator load, ensuring optimal superheat levels and preventing liquid slugging in the compressor. For technicians servicing 48,000 BTU cooling systems, this Nordyne HVAC part provides the