AS 2845.2-2010
AS 2845.2-2010
Water supply - Backflow preventions devices Registered air gaps and registered break tanks
Standards Australia
Specials
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IEC 61340-2-1 : 2.0
$78.00 (-56%) $34.32
Table of Contents
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<pageno>1</pageno>
<text>AS 2845.2-2010 WATER SUPPLY-BACKFLOW PREVENTIONS DEVICES - REGISTERED AIR GAPS AND REGISTERED BREAK TANKS</text>
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<pageno>4</pageno>
<text>PREFACE</text>
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<pageno>5</pageno>
<text>CONTENTS</text>
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<pageno>6</pageno>
<text>FOREWORD</text>
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<pageno>7</pageno>
<text>1 SCOPE</text>
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<pageno>7</pageno>
<text>2 NORMATIVE REFERENCES</text>
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<bookmark index='6'>
<pageno>7</pageno>
<text>3 DEFINITIONS</text>
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<pageno>7</pageno>
<text>3.1 Air gap-Water supply system</text>
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<pageno>7</pageno>
<text>3.2 Accessible</text>
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<pageno>7</pageno>
<text>3.3 Break tank</text>
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<pageno>7</pageno>
<text>3.4 Register</text>
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<bookmark index='11'>
<pageno>7</pageno>
<text>3.5 Spill level</text>
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<pageno>8</pageno>
<text>3.6 Storage tank</text>
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<pageno>8</pageno>
<text>4 DESIGN</text>
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<pageno>8</pageno>
<text>4.1 General</text>
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<pageno>8</pageno>
<text>4.2 Break tanks</text>
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<pageno>8</pageno>
<text>4.2.1 General</text>
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<pageno>9</pageno>
<text>4.2.2 Type A break tank unobstructed air gap</text>
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<pageno>9</pageno>
<text>4.2.3 Type B break tank air gap with overflow</text>
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<pageno>11</pageno>
<text>4.2.4 Type C break tank air gap with diverter and overflow</text>
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<pageno>12</pageno>
<text>4.2.5 Type E hygienic break tank</text>
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<pageno>12</pageno>
<text>5 MARKING</text>
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<pageno>12</pageno>
<text>5.1 Air gaps</text>
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<bookmark index='23'>
<pageno>12</pageno>
<text>5.2 Break tanks</text>
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<pageno>13</pageno>
<text>APPENDIX A - STORAGE TANKS-INFLOW AND OVERFLOW METHOD OF CALCULATION</text>
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<pageno>13</pageno>
<text>A1 GENERAL</text>
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<pageno>13</pageno>
<text>A2 INFLOW RATE</text>
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<pageno>16</pageno>
<text>A3 OVERFLOW SIZE AND SPILL LEVEL</text>
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<pageno>17</pageno>
<text>A4 AIR GAP</text>
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<pageno>17</pageno>
<text>A5 HEIGHT OF INLET ABOVE INVERT LEVEL OF OVERFLOW</text>
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Abstract
Specifies requirements for registered air gaps including those incorporated in break tanks used as backflow prevention devices for the protection of water supplies.
Scope
This Standard specifies requirements for registered air gaps, including those incorporated in break tanks, used as backflow prevention devices for the protection of water supplies.
General Product Information
| Document Type | Standard |
| Status | Current |
| Publisher | Standards Australia |
| Committee | WS-023 |
| Supersedes |
|
