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    I.S. EN 12729:2002

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    Superseded A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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    DEVICES TO PREVENT POLLUTION BY BACKFLOW OF POTABLE WATER - CONTROLLABLE BACKFLOW PREVENTER WITH REDUCED PRESSURE ZONE - FAMILY B - TYPE A

    Available format(s):  Hardcopy, PDF

    Superseded date:  02-03-2023

    Language(s):  English

    Published date:  01-01-2002

    Publisher:  National Standards Authority of Ireland

    For Harmonized Standards, check the EU site to confirm that the Standard is cited in the Official Journal.
    Only cited Standards give presumption of conformance to New Approach Directives/Regulations.

    Dates of withdrawal of national standards are available from NSAI.

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    Table of Contents - (Show below) - (Hide below)

    Foreword
    Introduction
    1 Scope
    2 Normative references
    3 Terms and definitions
    4 Denomination
    5 Designation
    6 Symbolization
    7 Physico-chemical characteristics
       7.1 Materials
       7.2 Nature of the materials
    8 Design
       8.1 General
       8.2 Relief valve
    9 Characteristics and tests
       9.1 General
       9.2 General tolerances
       9.3 Expression of the results
       9.4 Dimensional characteristics
       9.5 Mechanical characteristics
       9.6 Tightness characteristics
       9.7 Hydraulic characteristics
    10 Order of testing
    11 Marking and technical documents
       11.1 Marking
       11.2 Technical documents
    12 Presentation at delivery
    Annex A (informative) Examples of presentation of test results
    Bibliography

    Abstract - (Show below) - (Hide below)

    Provides the field of application, the dimensional, the physico-chemical, the design, the hydraulic, the mechanical, and the acoustic characteristics of controllable backflow preventer with reduced pressure zone Family B Type A.

    General Product Information - (Show below) - (Hide below)

    Document Type Standard
    Publisher National Standards Authority of Ireland
    Status Superseded
    Superseded By

    Standards Referencing This Book - (Show below) - (Hide below)

    EN 806-1:2000/A1:2001 SPECIFICATIONS FOR INSTALLATIONS INSIDE BUILDINGS CONVEYING WATER FOR HUMAN CONSUMPTION - PART 1: GENERAL
    EN 1717:2000 Protection against pollution of potable water in water installations and general requirements of devices to prevent pollution by backflow
    ISO 7-1:1994 Pipe threads where pressure-tight joints are made on the threads Part 1: Dimensions, tolerances and designation
    ISO 9227:2017 Corrosion tests in artificial atmospheres — Salt spray tests
    EN ISO 3822-1:1999/A1:2008 ACOUSTICS - LABORATORY TESTS ON NOISE EMISSION FROM APPLIANCES AND EQUIPMENT USED IN WATER SUPPLY INSTALLATIONS - PART 1: METHOD OF MEASUREMENT
    EN ISO 6509 : 1995 CORROSION OF METALS AND ALLOYS - DETERMINATION OF DEZINCIFICATION RESISTANCE OF BRASS
    EN 1092-2:1997 Flanges and their joints - Circular flanges for pipes, valves, fittings and accessories, PN designated - Part 2: Cast iron flanges
    EN 1267:2012 Industrial valves - Test of flow resistance using water as test fluid
    ISO 228-1:2000 Pipe threads where pressure-tight joints are not made on the threads Part 1: Dimensions, tolerances and designation
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