Standard
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AS 2845.2-2010
[Pending Revision]Water supply — Backflow preventions devices, Part 2: Registered air gaps and registered break tanks
Specifies requirements for registered air gaps including those incorporated in break tanks used as backflow prevention devices for the protection of water supplies.
Published: 30/06/2010
Pages: 12
Table of contents
Cited references
Content history
Table of contents
Header
About this publication
Preface
Foreword
1 Scope
2 Normative references
3 Definitions
4 Design
4.1 General
4.2 Break tanks
4.2.1 General
4.2.2 Type A break tank unobstructed air gap
4.2.3 Type B break tank air gap with overflow
4.2.4 Type C break tank air gap with diverter and overflow
4.2.5 Type E hygienic break tank
5 Marking
5.1 Air gaps
5.2 Break tanks
Appendix A
A1 General
A2 Inflow rate
A3 Overflow size and spill level
A4 Air gap
A5 Height of inlet above invert level of overflow
Cited references in this standard
[Current]
Water supply — Backflow prevention devices, Part 1: Materials, design and performance requirements
[Superseded]
Water supply — Backflow prevention devices, Part 3: Field testing and maintenance of testable devices
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