British Standards Document
BS EN 558
Industrial valves. Face-to-face and centre-to-face dimensions of metal valves for use in flanged pipe systems. PN and Class designated valves

https://doi.org/10.3403/30410944U

BS EN 558 is maintained by PSE/18/1. The current release of this standard is:

BS EN 558:2022 Industrial valves. Face-to-face and centre-to-face dimensions of metal valves for use in flanged pipe systems. PN and Class designated valves

https://doi.org/10.3403/30410944 (published 30/06/2022)

This standard is available from the following sources:

Other historical versions of this standard document also exist:

BS EN 558:2017 [current until 30/06/2022]
BS EN 558:2008+A1:2011 [current until 28/02/2017]
BS EN 558:2008 [current until 27/01/2012]