In 2007, AZ supplied plug valves to a mineral sands operation in South Africa, where they were used to control sand slurry being pumped from the pit to the plant.

This article was originally published with the title “ Compound and Self-Acting Plug Valve for Wash Basins ” in Scientific American Magazine Vol. 51 No. 4 (July 1884), p. 50 doi:10.1038 ...