Busch Dingo and Cat Roots type blowers and vacuum pumps are air-cooled, positive displacement and are operating according to the rotary lobe principle.
The Dingo model is available in seven sizes, from 45 to 1850 CFM. It can achieve 15 in. of Hg (500 mbar) in vacuum configuration and 15 psig (1 bar) in pressure configuration.
The Cat model is available in 6 sizes, from 15 to 115 CFM. It can achieve 15 in. of Hg (500 mbar) in vacuum configuration and 9 psig (0.6 bar) in pressure configuration.
The Dingo/Cat three-lobe Roots type rotary lobe blowers and vacuum pumps operate without oil in the compression chamber and is contact free.
Sturdy design and a sophisticated manufacturing
Labyrinth-seal between cylinder and gear housing
Due to high volumetric and mechanical efficiency
Vertical gas flow
Pump and motor dimensions can be adjusted for
Many accessories available
Can be used for suction as well as over pressure duties
Easy to service
Modular construction principle
Maintenance reduced to gear oil change and lubrication