White Rodgers AAE 1SZ-02 Thermostatic Expansion Valve A-SERIES THERMOSTATIC EXPANSION VALVE, EXTERNALLY EQUALIZED, 1 TON CAPACITY, REFRIGERANT CODE S (R-404A), CHARGE CODE Z (LOW TEMP), CAP. TUBE 60", 3/8" ODF X 1/2" ODF, STRAIGHT THRU BODY