White Rodgers NBE 15ZAA-07 Heat Exchangers NXT SERIES THERMOSTATIC EXPANSION VALVE WITH ADJUSTABLE SUPERHEAT, NO CHECK, EXTERNALLY EQUALIZED, 15 TON CAPACITY, REFRIGERANT CODE Z (R-410A), CHARGE CODE AA (WIDE RANGE), CAP. TUBE 60", 5/8" ODF X 7/8" ODF, BLEED 15%, STRAIGHT THRU BODY