Technology Sourcebook
www.foodengineeringmag.com/articles/91613-pneumatic-conveyor

Pneumatic conveyor
December 5, 2013
Hapman models 30, 36 and 42 pneumatic vacuum conveyors have capacities up to 18,000 lb./hr. Built to move high-volume bulk material without the need for plant air, they feature an integral PD pump to generate the necessary vacuum. A latched side door allows access to the internal filters and changes without tools.
Hapman; www.hapman.com