The William Powell Company is a manufacturer of gate, globe, and check valves in bronze, iron, steel, and corrosion resistant alloys for Class 125 thru Class 2500 pressure service. The William Powell Company's experience as a pioneer in the development of industrial valves, since 1846, encompasses over a century of craftsmanship and know-how. Through modern engineering, laboratory, research and testing facilities, The William Powell Co. has been able to keep pace with the changing times.

Powell Cast Steel Pressure Seal Valves Powell Pressure Seal Valves are intended for high pressure, high temperature applications in all types of fluid except where severe coking is a factor. The design and materials selection provide excellent service in fossil and nuclear steam generating stations, industrial and chemical plants, and refineries. The Powell design Pressure Seal Valves provide the most efficient flow passage and sealing features possible resulting in significant weight savings, ease of installation and maintenance features. Manufacturing and quality assurance procedures include extra controls on dimensional, non-destructive examination and testing of critical areas such as the gasket seating, welding end and stellited seating surfaces.