• AS 4795-2002

    Superseded A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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    Double-flanged butterfly valves for waterworks purposes

    Available format(s):  Hardcopy, PDF 1 User, PDF 3 Users, PDF 5 Users, PDF 9 Users

    Superseded date:  06-25-2021

    Language(s):  English

    Published date:  01-01-2002

    Publisher:  Standards Australia

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

    1 - AS 4795-2002 DOUBLE-FLANGED BUTTERFLY VALVES FOR WATERWORKS PURPOSES
    4 - PREFACE
    5 - CONTENTS
    6 - SECTION 1 SCOPE AND GENERAL
    6 - 1.1 SCOPE
    6 - 1.2 REFERENCED DOCUMENTS
    6 - 1.3 DEFINITIONS
    6 - 1.3.1 Bonded
    6 - 1.3.2 Ring body flange valve
    6 - 1.3.3 Seal on disc
    6 - 1.3.4 Seal in body
    7 - 1.3.5 Seal on body
    7 - 1.3.6 Vulcanize
    7 - 1.4 DESIGNATION OF SIZE
    7 - 1.5 ALLOWABLE OPERATING PRESSURES
    8 - SECTION 2 MATERIALS AND COMPONENTS
    8 - 2.1 GENERAL
    8 - 2.2 CORROSION-RESISTANT MATERIALS
    8 - 2.3 CONTAMINATION OF WATER
    8 - 2.4 O-RINGS (ELASTOMERIC TOROIDAL SEALING RINGS)
    10 - SECTION 3 DESIGN
    10 - 3.1 GENERAL
    10 - 3.2 END CONNECTIONS
    11 - 3.3 COMPONENT DESIGN
    11 - 3.3.1 Welding and post-weld heat treatment
    11 - 3.3.2 Castings
    11 - 3.3.3 External drainage holes
    11 - 3.3.4 Face-to-face dimensions
    12 - 3.3.5 Supports
    12 - 3.3.6 Seal options
    13 - 3.3.7 Shaft
    13 - 3.3.8 Shaft seal
    13 - 3.3.9 Bearings
    13 - 3.3.10 End thrust
    13 - 3.3.11 Position indicator
    14 - 3.3.12 Manual actuators and gearboxes
    14 - 3.3.13 Portable actuators
    14 - 3.3.14 Position-stops
    14 - 3.3.15 Torque-limiting devices
    15 - 3.3.16 Handwheels and caps
    15 - 3.4 MANUAL ACTUATOR
    15 - 3.4.1 Manual actuator orientation
    15 - 3.4.2 Tolerances
    15 - 3.5 LIFTING DEVICES
    15 - 3.6 EXTENSION SPINDLE ASSEMBLY
    16 - 3.7 FASTENERS
    17 - SECTION 4 PROTECTIVE COATINGS
    17 - 4.1 GENERAL
    17 - 4.2 COMPONENTS
    18 - SECTION 5 PERFORMANCE TESTS
    18 - 5.1 GENERAL AND TEST SEQUENCE
    18 - 5.1.1 General
    18 - 5.1.2 Test sequence
    18 - 5.2 TYPE TESTS
    18 - 5.2.1 Body strength test (Test A)
    18 - 5.2.2 Disc strength test (Test B)
    18 - 5.2.3 Shaft strength test (Test C)
    18 - 5.2.4 Cyclic test (Test D)
    19 - 5.3 PRODUCTION TESTS
    19 - 5.3.1 Manual actuator test (Test 1)
    19 - 5.3.2 Disc strength test (Test 2)
    19 - 5.3.3 Seat test (Test 3)
    19 - 5.3.4 Body test (Test 4)
    19 - 5.3.5 Disc strength reverse test (Test 5)
    19 - 5.3.6 Seat reverse test (Test 6)
    20 - 5.3.7 Functional test (Test 7)
    21 - SECTION 6 MARKING AND PACKAGING
    21 - 6.1 BODY MARKINGS
    21 - 6.2 DIRECTION OF CLOSURE FOR HANDWHEELS AND CAPS
    21 - 6.3 PACKAGING
    22 - APPENDIX A - MEANS FOR DEMONSTRATING COMPLIANCE WITH THIS STANDARD
    22 - A1 SCOPE
    22 - A2 RELEVANCE
    22 - A3 PRODUCT CERTIFICATION
    22 - A4 DEFINITIONS
    22 - A4.1 Valve batch
    22 - A4.2 Production batch
    22 - A4.3 Lot
    23 - A4.4 Sample
    23 - A4.5 Sampling plan
    23 - A4.6 Batch release test (BRT)
    23 - A4.7 Type testing (TT)
    23 - A5 MINIMUM SAMPLING AND TESTING FREQUENCY PLAN
    23 - A5.1 General
    23 - A5.2 Type testing
    23 - A5.3 Batch release testing
    23 - A5.4 Retesting
    27 - APPENDIX B - PURCHASING GUIDELINES
    27 - B1 GENERAL
    27 - B2 INFORMATION TO BE SUPPLIED BY THE PURCHASER
    31 - APPENDIX C - REFERENCED DOCUMENTS
    33 - APPENDIX D - ALTERNATIVE MATERIAL REQUIREMENTS
    34 - APPENDIX E - ALTERNATIVE COATING REQUIREMENTS - TWO-PACK HIGH-BUILD EPOXY COATING
    34 - E1 SCOPE
    34 - E2 SURFACE PREPARATION
    34 - E3 MATERIALS
    34 - E4 APPLICATION AND FINISH

    Abstract - (Show below) - (Hide below)

    Specifies requirements for manually operated resilient-seated double-flanged butterfly valves for waterworks purposes, Classes 10, 16, 21 and 35, with a maxiumum operating temperature of 40 degrees Celsius.

    Scope - (Show below) - (Hide below)

    This Standard specifies requirements for Classes 10, 16, 21 and 35, manually operated resilient-seated double-flanged butterfly valves for waterworks purposes, with a maximum operating temperature of 40C. This standard covers the following: (a) Manual actuators, gearboxes and standard spindle caps. (b) Water supply applications including potable water and recycled water as well as screened wastewater. (c) Valves of nominal size: (i) Seal-on-disc DN 300 to DN 2000.(ii) Seal-in-body: DN 80 to 2000.(iii) Seal-on-body: DN 80 to 2000. (d) The capability of the valves to be fitted with electric, hydraulic or pneumatic actuators and to be operated using portable actuators. Class 35 valves are only supplied with Ring Body Flanges while Class 21 may also be supplied with Ring Body Flanges. Means for demonstrating compliance with this Standard are given in Appendix A. NOTE: See Appendix B for purchasing requirements that should be agreed upon at time of inquiry or order.

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

    Committee WS-022
    Document Type Standard
    Publisher Standards Australia
    Status Superseded
    Superseded By
    Supersedes
    Under Revision

    History - (Show below) - (Hide below)

    First published as AS 4795-2002.

    Standards Referenced By This Book - (Show below) - (Hide below)

    AS 1833-2002 Austenitic cast iron
    AS 1111.1-2000 ISO metric hexagon bolts and screws - Product grade C - Bolts
    AS 1646.2-2000 Elastomeric seals for waterworks purposes Material requirements for pipe joint seals used in water and wastewater applications - Specifies by prescription formulation
    AS 1627.4-2002 Metal finishing - Preparation and pretreatment of surfaces - Abrasive blast cleaning
    AS 1831-2002 Ductile cast iron
    AS 1830-2002 Grey cast iron
    AS 1111.2-2000 ISO metric hexagon bolts and screws - Product grade C - Screws
    AS 2345-1992 Dezincification resistance of copper alloys
    AS 4087-1996 Metallic flanges for waterworks purposes
    AS/NZS 3678:1996 Structural steel - Hot-rolled plates, floorplates and slabs
    HB 18.28-1991 Guidelines for third-party certification and accreditation - Guide 28: General rules for a model third-party certification system for products
    AS 1646.1-2000 Elastomeric seals for waterworks purposes - General requirements
    AS 1210-1997 Pressure vessels
    AS/NZS 4020:2002 Testing of products for use in contact with drinking water
    AS 1214-1983 Hot-dip galvanized coatings on threaded fasteners (ISO metric coarse thread series)
    AS 1683.15.1-2000 Methods of test for elastomers International rubber hardness (Reconfirmed 2018)
    AS 1554.1-1991 Structural steel welding (known as the SAA Structural Steel Welding Code) - Welding of steel structures
    AS 1939-1990 Degrees of protection provided by enclosures for electrical equipment (IP Code)
    AS 1565-1996 Copper and copper alloys - Ingots and castings (Reconfirmed 2020)
    AS 1646.3-2000 Elastomeric seals for waterworks purposes - Material requirements for pipe joints seals used in water and wastewater applications with the exception of natural rubber and polyisoprene compounds
    AS/NZS 1554.1:2000 Structural steel welding Welding of steel structures
    AS 2074-1982 Steel castings
    AS/NZS 4680:1999 Hot-dip galvanized (zinc) coatings on fabricated ferrous articles
    AS/NZS 1567:1997 Copper and copper alloys - Wrought rods, bars and sections (Reconfirmed 2021)
    AS/NZS 1568:1998 Copper and copper alloys - Forging stock and forgings
    AS 3894.1-2002 Site testing of protective coatings Non-conductive coatings - Continuity testing - High voltage (brush) method (Reconfirmed 2013)
    AS 2317-1998 Collared eyebolts
    AS 2938-1993 Gears - Spur and helical - Guide to specification and rating
    AS/NZS 4158:1996 Thermal-bonded polymeric coatings on valves and fittings for water industry purposes
    AS 2738-2000 Copper and copper alloys - Compositions and designations of refinery products, wrought products, ingots and castings (Reconfirmed 2018)
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