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There is a Tradition of Innovation at A.Y. McDonald, Mfg. Co.  A.Y. McDonald, Mfg. Co. Provides Superior Quality Products Exceptional Service is our Number One Priority

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.

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