CSA/AM - ANSI Z21.22A-1983
RELIEF VALVES AND AUTOMATIC GAS SHUTOFF DEVICES FOR HOT WATER SUPPLY SYSTEMS
Organization: | CSA/AM |
Publication Date: | 1 January 1983 |
Status: | inactive |
Page Count: | 5 |
scope:
PREFACE
The standards set forth herein apply to the fifth edition of the Standard for Relief Valves and Automatic Gas Shutoff Devices for Hot Water Supply Systems, ANSI Z21.22-1979, and superesede corresponding standards therein. Following their preparation by the supervising subcommittee, they were accepted by American National Standards Committee Z21 and subsequently approved as American National Standard by the American National Standards Institute, Inc
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