T/ZZB 1704-2020 Active Group standards

T/ZZB 1704-2020 Oxygen valve

Publish Date: 2020-09-16 Implement Date: 2020-09-30 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/ZZB 1704-2020

Standard Type: Group standards

Standard Status: Active

is_force_gb: no

CCS Name: \nValve

ICS Name: \nValve Comprehensive

Publish Date: 2020-09-16

Implement Date: 2020-09-30

Scope

Main technical content: This standard specifies the terms and definitions, structural forms and models, basic requirements, technical requirements, test methods, inspection rules, marking, supply requirements, and quality commitments for valves used for oxygen. This standard applies to valves used for oxygen with a working pressure not exceeding 21 MPa, a nominal size of DN10 to DN1000 (NPS3/8 to NPS40), an oxygen medium temperature of -29 ℃ to 200 ℃, a dew point not higher than -30 ℃, and a purity (by volume fraction) of more than 23.5%. These valves include gate valves, ball valves, butterfly valves, and check valves, hereinafter referred to as valves.