Hot Spot Publication of ISO 28921-1 Isolating Valves for Low-temperature Applications- Design Manufacture and Production Testing

What is it?

ISO 28921-1:2022 Isolating valves for low-temperature applications — Part 1: Design, manufacturing and production testing has now been published by BSI as BS EN ISO 28921-1:2022 and is available to purchase.

This document specifies the requirements for the design, manufacture and testing of gate, globe, ball / plug and butterfly valve types used as isolation and check valves for low and cryogenic temperature service between −50 °C and −196°C.

The revised standard now covers isolating valves of sizes DN:10 – 1,800 (NPS 3/8 - 72) and extended pressure designations PN16 – 400 and Class 150 – 2500. This document excludes safety valves and control valves and it does not apply to valves for cryogenic vessels which are designed in accordance with ISO 21011.


Why is it Important?

This revised standard extends the size range and pressure designations of the first edition, and now clearly excludes control valves and safety valves from its scope.

Annex A covering production testing has been updated and changes have also been made to the referenced type testing procedures covered by ISO 28921-2 which is also currently under revision by ISO TC 153.

If you are involved in the design and manufacture of cryogenic valves this standard contains requirements that may directly affect your products and business.


Supersedes

This second edition will cancel and replace ISO 28921-1:2013.


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


Published: 17th August 2022

BVAA Technical Activity - August 2022

Each month, the BVAA Principal Technical Consultant, Peter Dix, writes a ...

Share on Twitter Share on LinkedIn Read full article

Visit the BVAA Group Stand at Valve World Expo 2022

The BVAA’s large Group Stand will again be proudly representing its 180+ ...

Share on Twitter Share on LinkedIn Read full article

Hot Spot IOGP JIP33 Publication of S-739 Specification for Pressure Regulators

What is it? IOGP JIP33 have released a new specification S-739 Specification ...

Share on Twitter Share on LinkedIn Read full article

BVAA AGM 18 November – Keynote Speakers Announced

This year’s Annual Meetings and Gala Ball is taking place 18 November at ...

Share on Twitter Share on LinkedIn Read full article

Comment by BVAA CEO Rob Bartlett

Like many, I experienced the most profound sense of loss when the news came ...

Share on Twitter Share on LinkedIn Read full article

First Valve Star Award at VALVE WORLD EXPO 2022 in Düsseldorf

Industry is in the starting blocks In about two months it will finally be time ...

Share on Twitter Share on LinkedIn Read full article

Hydrogen Technology Expo Europe

Hydrogen Technology Expo Europe - Share on Twitter Share on LinkedIn Read full article

Valmet’s Valve Solutions for P2X

Looking for valve solutions for Power-to-X, Power-to-Ammonia and green hydrogen ...

Share on Twitter Share on LinkedIn Read full article