Technology Sourcebook
www.foodengineeringmag.com/articles/96361-vortec-dual-force-vac-drum-pump

Vortec Dual Force Vac drum pump
December 9, 2016
The Vortec Dual Force Vac 2-way, air-powered drum pump can fill or discharge a 55-gal. drum in 2 minutes without moving parts; switching from fill to discharge mode is accomplished with the quarter-turn of a knob. The pump includes a vacuum hose and long-reach wand. Powered by compressed air, it is resistant to most nonvolatile, nonflammable liquids and can handle viscous liquids to 1,500 cPs, as well as chips and particulates.
Vortec; www.vortec.com