90.60 Close of review Mar 4, 2024
ISO
ISO/TC 8/SC 3 Piping and machinery
International Standard
47.020.30 Piping systems
Published
This document specifies requirements for design, manufacture, and test methods of cryogenic butterfly valves in order to have an excellent quality leakage stability in a very low temperature service (−196 °C to 80 °C).
It is applicable to valves of nominal sizes: DN: 80, 100, 150, 200, 250, 300, 350, 400, 450, 500, 550, 600 corresponding to nominal pipe size (NPS): 3, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24.
PUBLISHED
ISO 21159:2018
90.60
Close of review
Mar 4, 2024