The air vacuum pump is a venturi-type AC pump that eliminates moisture from air-con systems, which makes it safe and simple to add refrigerant. The air flow vacuum pump is simple to run and pulls full vacuum within two minutes of being linked to an air collection. Includes 1/2 in. ACME (R134a) and R12 connectors.
Air-powered vacuum pumps work when compressed air passing through an orifice increases its velocity and lowers its air pressure. Ambient air is drawn in through stations in the generator, creating suction and vacuum. The atmosphere stream exits through the exhaust. … These operations require vacuum pumps.