T/ZZB 2499-2021 Active Group standards

T/ZZB 2499-2021 Axial-flow check valve

Publish Date: 2021-09-08 Implement Date: 2021-10-08 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 2499-2021

Standard Type: Group standards

Standard Status: Active

is_force_gb: no

CCS Name: \nValve

ICS Name: Check valve

Publish Date: 2021-09-08

Implement Date: 2021-10-08

Scope

Main technical content: This document specifies the structural type, basic requirements, technical requirements, test methods, inspection rules, marking, packaging, storage, transportation, and quality commitments of axial flow check valves (hereinafter referred to as check valves). This document is applicable to check valves with a nominal pressure of PN 20 to PN 150, a nominal size of DN 25 to DN 1800, a pressure rating of Class 150 to Class 900, a nominal size of NPS 1 to NPS 72, and an applicable temperature range of -29 °C to 425 °C. The end connection type is flange or welded connection, and the applicable media include water, oil, gas, etc.