The air vacuum pump is a venturi-type AC pump that eliminates moisture from air conditioning systems, which makes it safe and simple to add refrigerant. The air flow vacuum pump is simple to work and pulls complete vacuum within two mins of being connected to an air collection. Contains 1/2 in. ACME (R134a) and R12 connectors.

Air-driven vacuum pumps work when compressed air passing via an orifice increases its velocity and lowers its air pressure. Ambient air is used through channels in the generator, creating suction and vacuum. The atmosphere stream exits through the exhaust. … These functions require vacuum pumps.