Fully welded ball valve, standard model, available in the sizes DN 250 (10”) and DN 300 (12”) full bore or from DN 300 (12”x10”) to DN 400 (16”x12”) reduced bore, PN 10÷50 or ANSI 150-300, in carbon steel with trunnion mounted ball in stainless steel or nickel plated carbon steel, with a fixed gear operator with handwheel or –in case of fixed stem extension- with a fixed gear operator with 90° deviation (see Optional devices and Operating devices), with butt welding ends.