A.Y. McDonald Mfg. Co. is a major manufacturer of water works valves and fittings, natural gas valves, and residential and commercial water pumping systems. The Company has distinguished itself with a proud tradition of quality and reliability since its founding in 1856.The mission of A.Y. McDonald Mfg. Co., in the words of our founder, is "to make good products and sell them honestly."​ We, the stockholders and co-workers, accomplish this by extending the McDonald family culture through excellent customer service and by focusing on our customers'​ needs.Our VisionTo be the leading producer of water and gas distribution products to benefit the current and next generation of employees, customers, and stockholders by continually growing and strengthening our business.We believe in:Making good products and selling them honestly. The Customer is the boss. Employees are a part of the A.Y. McDonald family. None of us is as smart as all of us. Leaving the company in better shape than it was received.A.Y. McDonald Mfg. Co. has a long tradition of trusted quality and dependable service. These attributes are advanced through the commitment of every employee. Everyone is challenged to capture the opportunity to excel and move upward to achieve a better product or process. A.Y. McDonald Mfg. Co. employees strive to meet and exceed this challenge everyday. Customers like to buy from A.Y. McDonald Mfg. Co. Why?The customer is "the boss,"​ and every effort is exerted to exceed expectations.Customer service is the number one priority.Customers find quality products linked with outstanding people.A.Y. McDonald Mfg. Co. Corporate headquarters, brass foundry and main manufacturing plant are located in Dubuque, Iowa. We also have locations in Albia, IA and Elizabethton, TN.