Founded in Mansfield, Ohio, in 1965 by Warren E. Rupp and Charles E. Young Jr., Warren Rupp engineers and manufactures air-operated and electrically operated double-diaphragm pumps for demanding fluid-handling work. Its pumps are sold in more than 60 countries through independent, factory-authorized distributors, while the company remains closely tied to its Ohio workforce and community. Warren Rupp is now a business unit of IDEX Corporation, with a workplace culture shaped by long employee tenures, hands-on training, and internal career growth.