Emerson Flow Control (Alco) 065630 Thermal Expansion Valve TXV 1/4" x 1/2", Sweat, Straight Body, 5' Capillary Tube, R12/R134A Capacity-1/2 Ton, Medium Temp. Charge, Externally Equalized, (Model AAE 1/2 MC 5FT 1/4 x 1/2 ODF S/T)