BS EN ISO 28921-1:2017

What is ISO 28921-1 - Isolating valves for low-temperature applications about?

ISO 28921-1 is a series of international standards on industrial valves that discusses

the best procedures and specifications required for manufacturing high-quality industrial valves.

ISO 28921-1 specifies requirements for design, dimensions, material, fabrication, and production testing of isolation valves for low-temperature applications. ISO 28921-1applies to gate, globe, check butterfly, and ball valves and can be used for other valve types used in low-temperature services.

ISO 28921-1 covers isolation valves for use in cryogenic temperature service where the design low-temperature service is –50 °C down to –196 °C. ISO 28921-1 covers valves with body, bonnet, bonnet extension, or cover made of metallic materials.

ISO 28921-1 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

Who is ISO 28921-1 - Isolating valves for low-temperature applications for?

ISO 28921-1 on isolating valves for low-temperature applications is relevant to:

• Manufacturer of industrial valves
• Mechanical engineer

Why should you use ISO 28921-1 - Isolating valves for low-temperature applications?

Isolating valves, also known as isolation valves, are used to regulate the flow of water from the mains to a water service pipe. They can be used to repair a dripping tap where there is no need to turn off the mains water if one of these valves is installed.

The purpose of ISO 28921-1 is the establishment of basic requirements and practices for design, fabrication, material selection, and production testing of valves used in low-temperature services.

As a user of ISO 28921-1, you can be ensured of test methods for testing isolating valves. With obedience and compliance to ISO 28921-1, you can efficiently design and manufacture high-quality isolating valves for low-temperature applications. With ISO 28921-1 you can be ensured

that the products consistently meet and exceed quality assurance targets. ISO 28921-1 provides you with comprehensive information useful throughout the process of production.