White Rodgers AA 1SW45-01 Thermostatic Expansion Valve A-SERIES THERMOSTATIC EXPANSION VALVE, INTERNALLY EQUALIZED, 1 TON CAPACITY, REFRIGERANT CODE S (R-404A), CHARGE CODE W (45 MOP), CAP. TUBE 30", 3/8" ODF X 1/2" ODF, STRAIGHT THRU BODY