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