CSA/ANSI Z21.21 : 2015
Withdrawn
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
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Hardcopy , PDF
17-07-2021
English
01-01-2015
Preface
1 Scope
2 Reference publications
3 Definitions
4 Construction
5 Performance
6 Commercial/industrial safety shutoff valves - construction
7 Commercial/industrial safety shutoff valves - performance
8 Manufacturing and production tests
9 Items unique to the United States
10 Items unique to Canada
Annex A (informative) - Preferred graphic symbols of
commonly used items, extracted from ANSI/IEEE
Standard 315, Graphic Symbols for Electrical and
Electronics Diagrams, and abbreviations for these items
Annex B (informative) - Table of conversion factors
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