Single Pressure Controls, High Pressure, Switch Type SPDT, Switch Action Opens on High/Low Pressure, Auto Reset, 36 In. Capillary with Flare Nut Pressure Connection, Universal, Copper Capillary withFlare Nut, NEMA 1, To Protect the Compressor from Excessive System Pressure which Could be Caused by Condenser Fan Failure, Application For Refrigerants R 12, R 22, R 134A and R 502