For terminals (rail, marine storage) loading as well as retail gasoline station unloading applications, an activated-carbon based Vapor Recovery Unit is preferred. While our VRU designs continue to evolve based on constant field feedback from our service technicians, customers, and changing industry requirements, we rely primarily on dry vacuum pumps technology (manufactured by industry leaders Busch and HORI) due to its overall reliability and lower contamination of recovered vapors by lubricating-oils and glycol.