This Part of this standard specifies face-to-face (FTF) and centre-to-face (CTF) dimensions for PN designated metal valves used in flanged pipe systems.
This Part of this standard covers valves having the following PN and DN values:
- PN 2,5; PN 6; PN 10; PN 16; PN 25; PN 40; PN 63; PN 100.
- 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 800; DN 900; DN 1 000; DN 1 200; DN 1 400; DN 1 600; DN 1 800; DN 2 000.
Face-to-face dimensions of automatic steam traps are specified in EN 26554.
BS EN 558-1:1996 history
2017BS EN 558:2017 Industrial valves. Face-to-face and centre-to-face dimensions of metal valves for use in flanged pipe systems. PN and Class designated valves
2008BS EN 558:2008+A1:2011 Industrial valves. Face-to-face and centre-to-face dimensions of metal valves for use in flanged pipe systems. PN and Class designated valves
2008BS EN 558:2008 Industrial valves - Face-to-face and centre-to-face dimensions of metal valves for use in flanged pipe systems - PN and Class designated valves
1996BS EN 558-1:1996 Industrial valves - Face-to-face and centre-to-face dimensions of metal valves for use in flanged pipe systems - PN-designated valves