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  • BSI
    BS EN ISO 28921-1:2017 Industrial valves. Isolating valves for low-temperature applications - Design, manufacturing and production testing
    Edition: 2017
    $442.60
    / user per year

Description of BS EN ISO 28921-1:2017 2017

This part of ISO 28921 specifies requirements for design, dimensions, material, fabrication and production testing of isolation valves for low-temperature applications.

It applies to gate, globe, check, butterfly and ball valves and can be used for other valve types used in low-temperature services.

This part of ISO 28921 covers isolation valves for use in cryogenic temperature service where the design low-temperature service is –50 °C down to –196 °C.

This part of ISO 28921 does not apply to valves for cryogenic services, designed in accordance with ISO 21011 , used with cryogenic vessels.

Where the requirements of this part of ISO 28921 vary from those given in the valve product standards, the requirements of this part of ISO 28921 apply.

This part of ISO 28921 covers valves with body, bonnet, bonnet extension or cover made of metallic materials.

It covers valves of nominal sizes DN: 10; 15; 20; 25; 32; 40; 50; 65; 80; 100; 125; 150; 200; 250; 300; 350; 400; 450; 500; 600; 650; 700; 750; 800; 850; 900,

corresponding to nominal pipe sizes NPS: 3/8; 1/2; 3/4; 1; 11/4; 11/2; 2; 21/2; 3; 4; 5; 6; 8; 10; 12; 14; 16; 18; 20; 24; 26; 28; 30; 32; 34; 36,

and applies to pressure designations:

  • PN 16; 25; 40; 100; 160; 250.

  • Class 150; 300; 600; 800; 900; 1 500.

NOTE

PN 250 and Class 1 500 in sizes DN > 100 and NPS > 4 are not covered in this part of ISO 28921 .



Standard NumberBS EN ISO 28921-1:2017
TitleIndustrial valves. Isolating valves for low-temperature applications - Design, manufacturing and production testing
StatusWithdrawn
Publication Date2017-03-31
Withdrawn Date2022-07-21
ReplacesBS EN 12567:2000
Replaced ByBS EN ISO 28921-1:2022
Identical National Standard OfEN ISO 28921-1:2017, ISO 28921-1
CorrectsBS ISO 28921-1:2013, BS EN 12567:2000
DescriptorsTest equipment, Petroleum technology, Gas valves, Leak tests, Valves, Liquid valves, Industrial, Metals, Pressure testing, Fluid equipment
ICS23.060.01 Valves in general
CommitteePSE/18
ISBN978 0 580 94527 4
PublisherBSI
Pages34

About BSI

BSI Group, also known as the British Standards Institution is the national standards body of the United Kingdom. BSI produces technical standards on a wide range of products and services and also supplies certification and standards-related services to businesses.
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