The Danfoss 060B205091 Differential Oil Pressure Control with 36-inch capillary tube, MP54, is a safety control designed to monitor differential oil pressure in refrigeration and HVAC compressor systems. It operates by sensing the pressure difference between the compressor oil pump outlet and crankcase, helping ensure adequate lubrication during operation. When oil pressure falls belo... https://www.partshnc.com/060b205091-danfoss-mp54-36-captube-diffpresscontl