The Southern Machine Industries is an engineering firm dedicated in the manufacturing of precision Engineering Assemblies/ sub-assemblies, for almost sixty years. The SMI staff of over 60, is continually trying to achieve higher quality and product reliability through different Quality Management Systems. SMI&＃039;S main focus of production is High Pressure Ball Valves. The technologically advanced High pressure ball valve design is the product of an Extensive research and development. As a result we produce valves of the highest quality and performance. All SMI valves incorporate premium components, manufactured to industry standards, and are thoroughly inspected before shipment from the factory. SMI Ball valves offer a precision ground, solid alloy steel ball which is heat treated and has a high quality surface finish. The critical ball edge has blended curvatures to reduce seat wear and provide a high cycle life. Double Lock Nut Design Standard on all SMI Valve designs, allows handles to be easily and safely removed, while the valve is under full line pressure. The Valves have been tested at 2500 psi. MATERIALS: (Stainless Steel or other Body materials available on request) Body : Steel body Ball : Alloy Steel (Heat treated and plated) Handle : Stainless steel All SMI valves are manufactured in strict compliance with Quality standards and specifications.