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ISO 21159:2018

Ships and marine technology -- Butterfly valves for use in low temperature applications -- Design and testing requirements

General information

Valid from 29.10.2018
Directives or regulations
None

Standard history

Status
Date
Type
Name
29.10.2018
Main
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.

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