Hot Spot EN 558:2022 Face-to-face and Centre-to-face Dimensions of Metal Valves for use in Flanged Pipe Systems - PN and Class Designated Valves Published

What is it?
The latest edition of EN 558 has now been published by CEN and is available to purchase. This 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.

The range of sizes and pressure designations to be covered by the updated standard is:

• DN10 to DN2000
• Class 125 to Class 2500
• PN2.5 to PN400

The presentation format of the tabular data has been revised when compared to the previous 2017 edition. The main changes in content in this edition are the inclusion of 4 new basic series of globe and wafer butterfly valves. Twenty three valve series that are considered to be special have been removed from the basic series tables and placed in a new Appendix C in an attempt to simplify the data tables.


Why is it Important?
It is important, as far as possible, to reduce the amount of variation amongst similar valve designs to promote increased standardisation and allow interchangeability. EN 558 is referenced by many current EN product standards and this revision ensures that it is up to date.

The equivalent standard ISO 5752 which also covers face-to-face and centre to face dimensions has also recently been revised. This revision of EN558 ensures that a degree of consistency between the two standards is retained.

It should be noted that EN 558 contains control valves in its scope, but ISO 5752 does not, making this an important reference standard for control valve dimensions.


Supersedes
This edition supersedes EN 558:2017.


Continuous Improvement - Did we miss anything?
Hot Spots are intended to alert members and provide a brief overview of new standards, activities or procedures that are being introduced in the industry. If there is key information missing that would be helpful, please let us know so that we can improve our future service.

Please Note: This Hotspot is for information purposes, and we invite comments from BVAA members only. Please also note that at time of publication ballots may be closed. For more information, please contact the Secretariat.

BVAA Members: Did you know we have a hotspot tab on the BVAA website? Head over to www.bvaa.org.uk/login-here.asp and log into the member only area. You then need to select ‘Hotspots’ for the latest. For information on how to access the member only area of the website please contact jane@bvaa.org.uk


BVAA Technical Activity - June 2022

Each month, the BVAA Principal Technical Consultant, Peter Dix, provides ...

Share on Twitter Share on LinkedIn Read full article

BVAA Working Groups

The BVAA has two outstanding technical discussion bodies, exclusively open to ...

Share on Twitter Share on LinkedIn Read full article

Comment by BVAA CEO Rob Bartlett

As a young greenhorn new to the trade association world, I once got drawn into ...

Share on Twitter Share on LinkedIn Read full article

BVAA Team Training Day

The BVAA are strong advocates of investing in staff, life-long learning and ...

Share on Twitter Share on LinkedIn Read full article

Advanced Valve Solutions - HD2000/200LM Thermal Compensating Globe Valve

5 Benefits of the HD2000 /200LM Thermal compensating Globe Valve

  • "Tight ...

    Share on Twitter Share on LinkedIn Read full article

  • Advanced Valve Solutions - Valves & More is back!

    Our successful Valves and More training seminar in Germany returned with our ...

    Share on Twitter Share on LinkedIn Read full article

    Gee Graphite’s FPS-GEE Energised - helping reduce costs and fugitive emissions

    The FPS-GEE Energised IQR System is a full range of products and services ...

    Share on Twitter Share on LinkedIn Read full article

    KSB Group’s future-proof diaphragm valves for drinking water

    Valves installed in drinking water transport systems have to meet stringent ...

    Share on Twitter Share on LinkedIn Read full article