ISO 21011:2008
Cryogenic vessels — Valves for cryogenic service
Cryogenic vessels — Valves for cryogenic service
- Статус документа:
- Действующий
- Формат:
- Электронный (PDF)
- Количество страниц:
- 12
- Дата публикации:
- 24 января 2008 г.
- Издание:
- ISO IS 21011 edition 1 version 1
- ICS:
- 23.020.40
ISO 21011:2008 specifies the requirements for the design, manufacture and testing of valves for a rated temperature of -40 °C and below (cryogenic service), i.e. for operation with cryogenic fluids in addition to operation at temperatures from ambient to cryogenic. ISO 21011:2008 applies to all types of cryogenic valves, including vacuum jacketed cryogenic valves up to size DN 150. ISO 21011:2008 is not applicable to pressure relief valves covered by ISO 21013-1.
Abstract
Overview - ISO 21011:2008 (Cryogenic valves)
ISO 21011:2008 specifies requirements for the design, manufacture and testing of valves for cryogenic service - valves rated for temperatures of −40 °C and below. It applies to all types of cryogenic valves, including vacuum‑jacketed cryogenic valves up to DN 150, for use with cryogenic fluids and for operation from ambient down to cryogenic temperatures. This standard excludes pressure relief valves covered by ISO 21013‑1.
Key topics and technical requirements
- Scope and definitions: Nominal size (DN), rated pressure, rated minimum temperature, valve categories (Category A = 2 000 cycle operation simulation; Category B = 100 cycles), flow coefficients (Kv and Cv) and other terms.
- Materials: Metallic and non‑metallic material selection requirements, including conformity with ISO 21028‑1 / ISO 21028‑2 for toughness at cryogenic temperatures; requirements for oxygen compatibility (see ISO 21010), hydrogen compatibility (ISO 11114‑1/2) and specific guidance (e.g., copper content
Технические детали
- Технический комитет
- ISO/TC 220 - Cryogenic vessels
- SKU
- ISO 21011:2008
Похожие стандарты
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