Mueller Steam Specialty was founded in the early 1900s as a specialty manufacturer serving the valve industry. Since that time, it has become one of the leading suppliers of strainers in the industry. The company s product line has grown to include a multitude of products that serve a wide range of industries. Mueller Steam Specialty moved in 1992 to a 300,000-square-foot manufacturing facility in St. Pauls, N.C. In 2000, Mueller Steam Specialty was acquired by Watts Water Technologies, which designs, manufactures and sells an extensive line of valves and other products to the water quality and water regulation and control markets. Mueller Steam Specialty is located in St. Pauls.