including 58DFA and 58GP models

5-inch ceramic block and 7

and Richmond LP gas water heaters

and is approved for use with POE oils

Nordyne 664348 Valve 319825-402 including 58DFA and 58GP modelsThe Nordyne 664348 is a heavy duty TR6 R410A TXV Outdoor Valve specifically engineered for 4 ton residential and commercial condenser units. As a veteran grade thermostatic expansion valve, this component provides critical refrigerant flow control by monitoring the superheat at the evaporator outlet. By adjusting the orifice opening in real time, it optimizes heat exchange efficiency and prevents liquid slugging, protecting the compressor from