The DIASTAR Six Valve shall be used in open/close applications and available in a fail-safe to close configuration.  The actuator housing shall be glass-filled polypropylene.  The pneumatic connection shall be threaded BSP.  The actuator bonnet to valve body connection shall be threaded with permanent markings on both the bonnet and body to ensure proper diaphragm compression.  Union and spigot style bodies shall be fully molded.  Standard versions shall include 304 stainless steel threaded mounting inserts.  The stroke shall be indicated by a graduated indicator.  ANSI flanged versions shall meet ANSI B16.5 150lb standards.  All valves shall be tested in accordance to ISO9393 and designed to ISO16138 standards.  All valves shall be manufactured under ISO9001 for Quality and ISO14001 for Environmental Management.  Following assembly, every valve shall be tested and certified bubble-tight exceeding Class VI standards.  PVC valves shall meet ASTM D1784 cell classification 12454 standards.  CPVC valves shall meet ASTM D1784 cell classification 23447-B standards.  ABS valves shall meet ASTM D3965 cell classification 42222 standards.  Valves of all materials shall be RoHS compliant.