Norm

NEN-ISO 28921-1:2013 en

Industri?le afsluiters - Isolerende afsluiters voor lage temperatuur applicaties - Deel 1: Ontwerp, vervaardiging en productiebeproeving

106,87

Over deze norm

Status Definitief
Aantal pagina's 23
Gepubliceerd op 01-05-2013
Taal Engels
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.

Details

ICS-code 23.060.01
Nederlandse titel Industri?le afsluiters - Isolerende afsluiters voor lage temperatuur applicaties - Deel 1: Ontwerp, vervaardiging en productiebeproeving
Engelse titel Industrial valves - Isolating valves for low-temperature applications - Part 1: Design, manufacturing and production testing

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