White Rodgers TRAE+ 20SZ-01 Thermostatic Expansion Valve TRAE SERIES THERMOSTATIC EXPANSION VALVE, EXTERNALLY EQUALIZED, 20 TON CAPACITY, REFRIGERANT CODE S (R-404A), CHARGE CODE Z (LOW TEMP), CAP. TUBE 120", 5/8" ODF X 7/8" ODF, STRAIGHT THRU BODY