Dry Processing
www.foodengineeringmag.com/articles/94959-rotary-airlock-valves

Rotary airlock valves
December 9, 2015
Prater rotary airlock valves are used as a component in bulk material handling systems. They are NPFA 69 certified for explosion resistance.
Prater; 630-759-9595; www.praterindustries.com