BS EN 558: Industrial valves Face-to-face

BS EN 558: 201 7

industrial valve Face-to-face and centre-to-face dimensions of metal valves for use in flanged pipe systems PN and Class designated valves

BS EN 558 Standard specifies the “face-to-face” (FTF) and “centre-to-face” (CTF) dimensions for PN and Class designated metal valves used in flanged pipe systems.

This European Standard covers valves with the fo llowing PN , Class and DN values:

PN 2 , 5; PN 6; PN 10; PN 16; PN 25; PN 40; PN 63; PN 100; PN 160; PN 250; PN 320; PN 400;

Class 125; Class 150 ; Class 250; Class 300; Class 600 ; Class 900; Class 1 500; Class 2 500;

DN 150;

DN 800 ;

DN 125;

DN 750;

DN 10; DN 15; DN 20; DN 25; DN 32; DN 40; DN 50; DN 65; DN 80; DN 100;

DN 200; DN 250; DN 300; DN 350; DN 400; DN 450; DN 500; DN 600; DN 700;

DN 900; DN 1 000; DN 1050; DN 1 200; DN 1 400; DN 1600 ; DN 1 800; DN 2000.

For valves in other shell materials than metal the same FTF and CTF dimensions may be used.

For relationship between DN and NPS see Annex B.