D711-301G-DTR-CS 6″ ANSI Class 150# flgd., API 6D, Type III, non-lubricated, resilient, double seated, trunnion mounted, double block and bleed plug valve, c.s. body with external shop coat primer, internally plated, electroless nickel plated plug, ductile iron slips with Viton seals, includes gear operator, and cavity relief system with sst. manual bleed valve