This European Standard applies to all industrial process control valves (hereafter referred to as control valves).This European Standard specifies the design and performance requirements including material, pressure/temperature ratings, dimensions, testing and marking.The range of nominal size is:- DN 10; DN 15; DN 20; DN 25; DN 32; DN 40; DN 50; DN 65; DN 80; DN 100; DN 125; DN 150; DN 200; DN 250; DN 300; DN 350; DN 400; DN 450; DN 500; DN 600; DN 700; DN 750; DN 800; DN 900; DN 1 000; DN 1 200.The range of PN is:- PN 10; PN 16; PN 25; PN 40; PN 63; PN 100; PN 160; PN 250; PN 320; PN 400.The range of Class is:- Class 150; Class 300; Class 600; Class 900;