... , regeneration, vacuum,filling(oil,refrigerant)and monitoring. Manually-operated Refrigerant Recovery and Filling Machine HS-520Connection:1/4SAE quick coupler ... for recovery, regeneration, vacuum,filling(oil,refrigerant)and monitoring. large screen LCD display to guide operation with prompting for convenient use. ... dry filter: 100KGS Manually-operated Refrigerant Recovery and Filling Machine HS-520