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Ready for Field Use: Includes pre-stripped 16-inch wires to reduce installation time on the job site
perfect for modern heat pump applications
it features a 5-second Trial for Ignition (TFI) and a 5-second ignitor heat-up period to ensure stable combustion
this valve facilitates tiered heating—low-fire and high-fire stages—to optimize combustion efficiency and temperature stability
When the call for heat fails on a Reznor gas-fired unit
Nordyne 664350 TXV Valve 320720-756 Ready for Field Use: IncludesThe Nordyne 664350 is a high performance 4 ton R410A thermostatic expansion valve engineered for precise refrigerant metering in residential and light commercial split system evaporators. This genuine OEM component is designed to maintain target superheat across varying load conditions, protecting the compressor from liquid slugging while maximizing heat transfer efficiency. As a direct replacement for Nordyne 664350R, it features a balanced port
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