3.6 LITER. Pressure valve. A safety switch that monitors the Pressure of the refrigerant. A/C Refrigerant Pressure Sensor. A/C Service Valve Core. Air Conditioning (A/C) Refrigerant Sensor. Air Conditioning (A/C) Service Core. Air Conditioning Refrigerant Charging Port Schrader. HVAC Switch. Low CUT - Off SWITCH. Included with: Discharge line, Liquid line, Suction and Discharge AC line, Suction and Liquid AC line, Tube assembly, Tube assy.