Steel Ball Valve Reasonable structure valve Reliable seal valve Good performance valve API,CE,ISO9001 Steel Ball ValveBall Valve Design & Manufacture Std.: API 600, ... BS 1414, ASME B16.34Ball Valve Face to Face Std.: API 6D, ASME B16.10, ... ASME B16.47, DIN2543-2551.Ball Valve Test Standard: ISO5208, API 600, BS 6755Ball Valve Structure Type: Rising Stem and Wedge Single ...