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 surroundings vacuum pump is simple to function and pulls full vacuum within two mins of being connected to an air range. Includes 1/2 in. ACME (R134a) and R12 connectors.

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