30.20 Jun 9, 2026
ISO
ISO/TC 131/SC 5
International Standard
Specifies rules for the identification. Applies in particular to valves which will be developed in future with two and three ports, where today's practice of marking valve ports is different. The identification rules apply to those ports which provide the connection between two valves or between a valve and a pipe.
PUBLISHED
ISO 9461:1992
PROJECT
ISO/CD 9461
30.20
CD study/ballot initiated
Jun 9, 2026
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