T/CATSI 02021-2025 Active Group standards

T/CATSI 02021-2025 Liquid hydrogen cylinder shut-off valve

Publish Date: 2025-02-07 Implement Date: 2025-02-15 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: T/CATSI 02021-2025

Standard Type: Group standards

Standard Status: Active

is_force_gb: no

CCS Name: -

ICS Name: Pressure vessels, gas cylinders

Publish Date: 2025-02-07

Implement Date: 2025-02-15

Scope

Main technical content: This standard specifies the scope, terms, basic types, design requirements, test methods, inspection rules, marking, packaging, storage and transportation, and product certificates of shut-off valves for liquid hydrogen cylinders (hereinafter referred to as valves). It is applicable to shut-off valves for liquid hydrogen cylinders with a nominal working pressure not exceeding 3.5 MPa, a temperature not lower than -253°C, and an ambient temperature of -40°C to +60°C. It defines the logical sequence of the functions of the valves for liquid hydrogen on-board cylinders, the vacuum insulation requirements of the overall system, the types of valves and their necessary structures, as well as design requirements, material requirements, and standard requirements for dimensions and interfaces; at the same time, it specifies the safety norms for various harsh on-board working conditions such as thermal expansion and contraction of liquid hydrogen, hydrogen embrittlement, resistance to oxidation, resistance to vibration, resistance to dust, and prevention of icing.