... such as recovery, regeneration, vacuum,filling(oil,refrigerant)and monitoring. Manually-operated Refrigerant Recovery and Filling Machine HS-520Connection:1/4SAE quick ... R134a or R404a .Features: functions for recovery, regeneration, vacuum,filling(oil,refrigerant)and monitoring. large screen LCD display to guide ... of dry filter: 100KGS Manually-operated Refrigerant Recovery and Filling Machine HS-520