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  • AS 2638.2-2006

    Superseded A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.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

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

    Superseded date:  16-08-2017

    Language(s):  English

    Published date:  01-01-2006

    Publisher:  Standards Australia

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

    1 - AS 2638.2-2006 GATE VALVES FOR WATERWORKS PURPOSES - RESILIENT SEATED
    4 - PREFACE
    5 - CONTENTS
    7 - SECTION 1 SCOPE AND GENERAL
    7 - 1.1 SCOPE
    7 - 1.2 REFERENCED DOCUMENTS
    7 - 1.3 DEFINITIONS
    7 - 1.3.1 Allowable operating pressure (AOP)
    7 - 1.3.2 Allowable site test pressure (ASTP)
    7 - 1.3.3 Bulkhead test
    8 - 1.3.4 Bypass arrangement
    8 - 1.3.5 Coating
    8 - 1.3.6 Coating defect
    8 - 1.3.7 Distortion
    8 - 1.3.8 DN (nominal size)
    8 - 1.3.9 Effective length
    8 - 1.3.10 Face to face dimensions
    8 - 1.3.11 Free-end seat test
    8 - 1.3.12 Maximum allowable gearbox input torque
    8 - 1.3.13 Maximum allowable operating pressure (MAOP)
    8 - 1.3.14 Maximum functional test torque
    8 - 1.3.15 Maximum operator input torque
    8 - 1.3.16 Maximum possible input torque
    9 - 1.3.17 Maximum operating temperature
    9 - 1.3.18 Minimum strength test torque
    9 - 1.3.19 Non-rising spindle design
    9 - 1.3.20 Pressure Classification (PN)
    9 - 1.3.21 Rising spindle design
    9 - 1.3.22 Type test
    9 - 1.4 DESIGNATION OF SIZE
    9 - 1.5 ALLOWABLE PRESSURES
    10 - SECTION 2 MATERIALS AND COMPONENTS
    10 - 2.1 MATERIALS
    10 - 2.2 DEZINCIFICATION-RESISTANT MATERIALS
    10 - 2.3 CONTAMINATION OF WATER
    10 - 2.4 O-RINGS (ELASTOMERIC TOROIDAL SEALING RINGS)
    12 - SECTION 3 DESIGN
    12 - 3.1 GENERAL
    12 - 3.2 DIMENSIONS
    12 - 3.2.1 General
    12 - 3.3 END CONNECTIONS
    12 - 3.3.1 General
    12 - 3.3.2 Flanged ends
    12 - 3.3.3 Socket ends
    12 - 3.3.4 Spigot ends
    12 - 3.3.5 Shouldered or grooved ends
    12 - 3.4 GATE
    12 - 3.4.1 Coating
    12 - 3.4.2 Gate guides
    12 - 3.4.3 Gate travel
    13 - 3.5 COMPONENT JOINTING
    13 - 3.5.1 Connections
    13 - 3.5.2 Fasteners
    13 - 3.6 WATERWAY
    13 - 3.7 SPINDLE
    13 - 3.7.1 Spindle diameter
    13 - 3.7.2 Spindle thread
    13 - 3.7.3 Spindle sealing
    13 - 3.7.4 Thrust collar
    13 - 3.7.5 Spindle seal retainer
    14 - 3.8 OPERATION
    14 - 3.8.1 General
    14 - 3.8.2 Spindle cap and key
    14 - 3.8.3 Extension spindle
    14 - 3.8.4 Handwheels
    14 - 3.8.5 Direction of closure
    14 - 3.9 LIFTING DEVICES
    14 - 3.10 SUPPORT FEET
    14 - 3.11 BYPASS ARRANGEMENTS
    19 - SECTION 4 COATINGS
    19 - 4.1 GENERAL
    19 - 4.2 DESIGN
    20 - SECTION 5 TESTING
    20 - 5.1 TYPE TESTS
    20 - 5.1.1 General
    20 - 5.1.2 Strength test (thrust collar, spindle, nut and cap) (Test A)
    20 - 5.1.3 Body pressure test (Test B)
    21 - 5.1.4 Gate strength test (Test C)
    21 - 5.1.5 Torque test (Test D)
    21 - 5.1.6 Valve seat test (Test E)
    21 - 5.1.7 Sensitivity test (Test F)
    21 - 5.1.8 Functional test (Test G)
    21 - 5.1.9 Spindle seal replacement or repair test (Test H)
    21 - 5.1.10 Final inspection
    21 - 5.1.11 Cyclic flow test (Test I)
    22 - 5.1.12 Endurance cyclic flow test (Test J)
    23 - 5.1.13 Gate rubber adhesion test (Test K)
    23 - 5.1.14 Strength test (valve key) (Test L)
    23 - 5.1.15 Strength test (spindle extension) (Test M)
    23 - 5.2 PRODUCTION TESTS
    23 - 5.2.1 General
    23 - 5.2.2 Body test (Test 1)
    24 - 5.2.3 Valve seat test (Test 2)
    24 - 5.2.4 Coating tests
    25 - SECTION 6 GEARBOXES
    25 - 6.1 DESIGN
    25 - 6.1.1 Gearbox
    25 - 6.1.2 Gearbox selection
    25 - 6.1.3 Geared valves
    25 - 6.2 COATINGS
    25 - 6.3 MARKINGS
    26 - SECTION 7 MARKING AND PACKAGING
    26 - 7.1 BODY MARKINGS
    26 - 7.2 VALVE KEY AND SPINDLE EXTENSION MARKINGS
    26 - 7.3 DIRECTION OF CLOSURE FOR HANDWHEELS AND CAPS
    26 - 7.4 PACKAGING
    27 - APPENDIX A - MEANS FOR DEMONSTRATING COMPLIANCE WITH THIS STANDARD
    27 - A1 SCOPE
    27 - A2 RELEVANCE
    27 - A3 PRODUCT CERTIFICATION
    27 - A4 DEFINITIONS
    27 - A4.1 Batch release test (BRT)
    27 - A4.2 Lot
    27 - A4.3 Production batch
    28 - A4.4 Sample
    28 - A4.5 Sampling plan
    28 - A4.6 Type testing (TT)
    28 - A4.7 Valve batch
    28 - A5 TESTING
    28 - A5.1 General
    28 - A5.2 Retesting
    31 - APPENDIX B - PURCHASING GUIDELINES
    31 - B1 GENERAL
    31 - B2 INFORMATION TO BE SUPPLIED BY THE PURCHASER
    33 - B3 INFORMATION TO BE SUPPLIED BY THE MANUFACTURER
    33 - B4 MATTERS FOR AGREEMENT BETWEEN THE PURCHASER AND THE MANUFACTURER
    34 - APPENDIX C - REFERENCED DOCUMENTS
    36 - APPENDIX D - ALTERNATIVE MATERIAL REQUIREMENTS
    37 - APPENDIX E - GUIDELINES FOR GEARBOX SELECTION AND APPLICATION
    37 - E1 GENERAL
    37 - E2 INFORMATION REQUIRED FOR GEARBOX SELECTION
    37 - E3 TORQUE REQUIREMENTS OF A VALVE
    37 - E3.1 General
    38 - E3.2 Torque to seal
    38 - E3.3 Running torque
    38 - E4 STANDARD GEARBOX RATIOS
    38 - E5 GEAR RATIO SELECTION
    39 - E6 FINAL CHECK

    Abstract - (Show below) - (Hide below)

    Sets out requirements for PN 16 and PN 25 metal-bodied resilient-seated gate valves for waterworks purposes, with a maximum operating temperature of 40 Degrees Celsius.

    Scope - (Show below) - (Hide below)

    This Standard specifies requirements for PN 16 and PN 25 metal-bodied resilient-seated gate valves for waterworks purposes, with a maximum operating temperature of 40°C. This Standard is applicable to the following versions: (a) Valves of nominal sizes DN 80 to DN 750 with inside screw and non-rising spindle design, operated by a removable key, with or without a gearbox, for buried applications.(b) Valves of nominal size DN 80 to DN 750 with inside screw and non-rising spindle design, operated by a hand wheel, with or without a gearbox, for aboveground applications.(c) Valves of nominal size DN 80 to DN 300 with outside screw and rising spindle design, operated by a hand wheel, for aboveground applications where the position of the gate is required to be visible.(d) Valves of nominal sizes DN 450 to DN 750 with an integral bypass arrangement.The design criteria of the valve and fasteners should be based on a minimum life expectancy of 50 years.Means for demonstrating compliance with this Standard are given in Appendix A.note: Purchasing guidelines are given in Appendix B.

    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 2638-1983.
    Revised and redesignated as Int 88006-1988.
    Int 88006-1988 withdrawn 1988.
    AS 2638-1983 revised 1988.
    Third edition 1991.
    AS 2638-1991 ervised and redesignated in part as AS 2638.2-1999.
    Second edition 2002.
    Third Edition 2006. Originated as AS 2638-1983. Third Edition 1991. AS 2638-1991 revised and redesignated in part as AS 2638.2-1999. Third Edition 2006.

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

    AS/NZS 4158:2003 Thermal-bonded polymeric coatings on valves and fittings for water industry purposes
    AS 1594-1992 Hot-rolled steel flat products
    AS/NZS 1567:1997 Copper and copper alloys - Wrought rods, bars and sections (Reconfirmed 2021)
    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 1111.1-2000 ISO metric hexagon bolts and screws - Product grade C - Bolts
    AS 2317-1998 Collared eyebolts
    AS 1831-2002 Ductile cast iron
    AS 2345-2006 Dezincification resistance of copper alloys
    HB 18.28-2005 Conformity assessment - Guidance on a third-party certification system for products
    AS/NZS 4020:2005 Testing of products for use in contact with drinking water
    AS 3894.13-2002 Site testing of protective coatings Inspection report - Daily (Reconfirmed 2019)
    AS 1683.15.1-2000 Methods of test for elastomers International rubber hardness (Reconfirmed 2018)
    AS 4087-2004 Metallic flanges for waterworks purposes
    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 1442-1992 Carbon steels and carbon-manganese steels - Hot-rolled bars and semifinished products
    AS B202-1962 General purpose Acme screw threads
    AS 3894.1-2002 Site testing of protective coatings Non-conductive coatings - Continuity testing - High voltage (brush) method (Reconfirmed 2013)
    AS 1646.1-2000 Elastomeric seals for waterworks purposes - General requirements
    AS 3894.12-2002 Site testing of protective coatings Inspection report - Coating (Reconfirmed 2019)
    AS 3894.11-2002 Site testing of protective coatings Equipment report (Reconfirmed 2019)
    AS 60529-2004 Degrees of protection provided by enclosures (IP Code) (Reconfirmed 2018)
    AS 1565-1996 Copper and copper alloys - Ingots and castings (Reconfirmed 2020)
    AS 1646.4-2005 Elastomeric seals for waterworks purposes - Material requirements for pipe joint seals used in water and wastewater applications - Thermoplastic elastomers and vulcanizates
    AS 3894.14-2002 Site testing of protective coatings Inspection report - Daily painting (Reconfirmed 2019)
    AS 3894.10-2002 Site testing of protective coatings Inspection report - Daily surface and ambient conditions (Reconfirmed 2019)
    AS 1111.2-2000 ISO metric hexagon bolts and screws - Product grade C - Screws
    AS/NZS 2280:2004 Ductile iron pipes and fittings
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