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CSA/AM - ANSI Z21.22-1979

RELIEF VALVES AND AUTOMATIC GAS SHUTOFF DEVICES FOR HOT WATER SUPPLY SYSTEMS FIFTH EDITION; ADDENDA Z21.22A - 1983, ADDENDA Z21.22B - 1984

inactive
Organization: CSA/AM
Publication Date: 1 January 1979
Status: inactive
Page Count: 43
scope:

PREFACE

This publication represents a basic standard for safe operation, substantial and durable construction, and acceptable performance for relief valves and automatic gas shutoff devices for hot water supply systems. It is the result of years of experience in the utilization of gas supplemented by extensive research.

Nothing in this standard is to be considered in any way as indicating a measure of quality beyond compliance with the provisions it contains. It is designed to allow compliance of relief valves and automatic gas shutoff devices, the construction and performance of which may exceed the various provisions specified in any respect. In its preparation full recognition has been given to possibilities of improvement through ingenuity of design. As progress takes place, revisions may become necessary. When they are believed desirable, recommendations should be forwarded to the Chairman of American National Standards Committee Z21, 8501 East Pleasant Valley Road, Cleveland, Ohio 44131.

Document History

January 1, 2015
Relief valves for hot water supply systems
A description is not available for this item.
January 1, 2015
Relief valves for hot water supply systems
This Standard applies to the following types of relief valves constructed entirely of new, unused parts and materials: a) combination temperature and pressure relief valves for use on storage tanks...
Relief Valves for Hot Water Supply Systems
This standard applies to the following types of relief valves constructed entirely of new, unused parts and materials: a. Combination temperature and pressure relief valves for use on storage tanks...
Relief Valves for Hot Water Supply Systems
PREFACE The standards set forth herein apply to the first edition of the Standard for Relief Valves for Hot Water Supply Systems, ANSI Z21.22-1999 · CSA 4.4-M99, and Addenda ANSI Z21.22a-2000 · CSA...
January 1, 2001
Relief Valves For Hot Water Supply Systems
This standard applies to the following types of relief valves constructed entirely of new, unused parts and materials: a. Combination temperature and pressure relief valves for use on storage tanks...
Relief Valves for Hot Water Supply Systems
PREFACE The standard set forth herein apply to the first edition of the Standard for Relief Valves for Hot Water Supply Systems, ANSI 221.22-1 999 . CSA 4.4-M99, and supersede corresponding...
RELIEF VALVES FOR HOT WATER SUPPLY SYSTEMS
The standard set forth herein apply to the first edition of the Standard for Relief Valves for Hot Water Supply Systems, ANSI Z21.22-1999 · CSA 4.4-M99, and supersede corresponding standards therein....
January 1, 2000
RELIEF VALVES FOR HOT WATER SUPPLY SYSTEMS
PREFACE The standard set forth herein apply to the first edition of the Standard for Relief Valves for Hot Water Supply Systems, ANSI Z21.22-1999 · CSA 4.4-M99, and supersede corresponding standards...
April 1, 1999
Relief Valves for Hot Water Supply Systems
This standard applies to the following types of relief valves constructed entirely of new, unused parts and materials: a. Temperature relief valves and combination temperature and pressure relief...
Relief Valves for Hot Water Supply Systems
This standard applies to the following types of relief valves constructed entirely of new, unused parts and materials: a. Temperature relief valves and combination temperature and pressure relief...
April 1, 1999
Relief Valves for Hot Water Supply Systems
PREFACE This publication represents a basic standard for safe operation, substantial and durable construction, and acceptable performance of relief valves for hot water supply systems. It is the...
January 1, 1999
RELIEF VALVES FOR HOT WATER SUPPLY SYSTEMS
PREFACE This publication represents a basic standard for safe operation, substantial and durable construction, and acceptable performance of relief valves for hot water supply systems. It is the...
January 1, 1990
Relief Valves and Automatic Gas Shutoff Devices for Hot Water Supply Systems
A description is not available for this item.
January 1, 1986
Relief Valves and Automatic Gas Shutoff Devices for Hot Water Supply Systems Sixth Edition
PREFACE This publication represents a basic standard for safe operation, substantial and durable construction, and acceptable performance of gas-fired gravity and fan type floor furnaces. It is the...
January 1, 1984
RELIEF VALVES AND AUTOMATIC GAS SHUTOFF DEVICES FOR HOT WATER SUPPLY SYSTEMS
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 Addenda,...
January 1, 1983
RELIEF VALVES AND AUTOMATIC GAS SHUTOFF DEVICES FOR HOT WATER SUPPLY SYSTEMS
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...
ANSI Z21.22-1979
January 1, 1979
RELIEF VALVES AND AUTOMATIC GAS SHUTOFF DEVICES FOR HOT WATER SUPPLY SYSTEMS FIFTH EDITION; ADDENDA Z21.22A - 1983, ADDENDA Z21.22B - 1984
PREFACE This publication represents a basic standard for safe operation, substantial and durable construction, and acceptable performance for relief valves and automatic gas shutoff devices for hot...
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