Clow Valve Company
ConstructionIowa, United States201-500 Employees
Clow Valve Company manufactures waterworks valves and fire hydrants from two sites in the United States, located in Oskaloosa, Iowa, and Riverside, California. The Oskaloosa facility houses iron and brass foundries, a machine shop, assembly, finished goods warehousing, and offices, while the Riverside operation functions as a distribution center for wet barrel hydrants and inventories of other Clow products. The company traces its roots to 1878 as James B. Clow & Sons and emphasizes that its products are produced in accordance with Made in the USA requirements. In 2023, Clow Valve Company announced a $75 million expansion at its Oskaloosa foundry to install new manufacturing equipment and boost capacity. The project is intended to double production using the existing workforce, underscoring the company's ongoing growth in the water infrastructure market.