A.Y. McDonald Mfg. Co. is a leading manufacturer of Waterworks Brass, Plumbing Valves, Pumps and Water Systems and High Pressure Gas Valves and Meter Bars.The Company has distinguished itself with a proud tradition of quality and reliability since its founding in 1856.
A.Y. McDonald Mfg. Co. Corporate headquarters, brass foundry and main manufacturing plant are located in Dubuque, Iowa. They also have locations in Albia, IA; Elizabethton, TN; and Sparks, NV.