This standard specifies end-to-end and centre-to-end dimensions for steel butt-weld end valves having connecting dimensions of weld ends in compliance with EN 12627, used in PN and Class designated piping systems.
The range of PN is:
PN 10; PN 16; PN 25; PN 40; PN 63; PN 100.
The range of Class is:
Class 150, Class 300, Class 600, Class 900, Class 1 500, Class 2 500.
The range of nominal size is:
DN 8; 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.
NOTE 1: DN 750 is not applicable to PN designated valves.
NOTE 2: See Annex B (informative) for the relationship between nominal size (DN) and nominal pipe size (NPS).
BS EN 12982:2000 history
2010BS EN 12982:2010 Industrial valves. End-to-end and centre-to-end dimensions for butt welding end valves
2010BS EN 12982:2009 Industrial valves - End-to-end and centre-to-end dimensions for butt welding end valves
2000BS EN 12982:2000 Industrial valves - End-to-end and centre-to-end dimensions for butt welding end valves