90.20 Standard under periodical review Apr 15, 2024
ISO
ISO/TC 8/SC 3 Piping and machinery
International Standard
47.020.30 Piping systems
Published
This document specifies requirements of design, manufacture, and test methods for cryogenic gate valves to have excellent quality of leakage stability in very low temperature environments (−50 °C to −196 °C).
PUBLISHED
ISO 19037:2019
90.20
Standard under periodical review
Apr 15, 2024