The ferrous scrap-fed Clow Valve Co. ductile iron foundry in Oskaloosa, Iowa, has been selected to receive a U.S. Environmental Agency (EPA) Region 7 2020 Pollution Prevention (P2) Award. On its website, Clow Valve says its ductile iron is “made from 100 percent recycled scrap iron and steel, and the final product is recyclable after its long, useful life.” The company, which is part of Birmingham,…