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  • BSI
    21/30402416 DC BS EN ISO 28921-1. Industrial valves. Isolating valves for low-temperature applications - Part 1. Design, manufacturing and production testing
    Edition: 2021
    $44.66
    / user per year

Description of 21/30402416 DC 2021

This document specifies requirements for design, dimensions, material, fabrication and production testing of gate, globe, ball/plug and butterfly valve design types used as isolation valves and check valves for low-temperature applications.

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

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

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

This document 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; 950; 1 000; 1 050; 1 200; 1 350; 1 400; 1 500; 1 600; 1 650; 1 800.

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; 38; 40; 42; 48; 54; 56; 60; 64; 66; 72,

and applies to pressure designations:

  1. PN 16; 25; 40; 100; 160; 250; 400;

  2. Class 150; 300; 600; 800; 900; 1 500; 2 500.

NOTE

Not all type and size combination are available in all pressure ratings.

This document excludes testing for safety valves and control valves.



Standard Number21/30402416 DC
TitleBS EN ISO 28921-1. Industrial valves. Isolating valves for low-temperature applications - Part 1. Design, manufacturing and production testing
StatusDefinitive
Publication Date2021-04-13
Identical National Standard OfISO/DIS 28921-1
DescriptorsValve components, Valve gears, Low-temperature techniques, Thermal testing, Low-temperature testing
ICS23.060.01 Valves in general
CommitteePSE/18
PublisherBSI
Pages33

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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