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AS 4795-2002

Superseded
Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

View Superseded by
superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

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Superseded date

25-06-2021

Language(s)

English

Published date

01-01-2002

Preview

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

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.

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.

Committee
WS-022
DocumentType
Standard
ISBN
0 7337 4930 5
Pages
29
PublisherName
Standards Australia
Status
Superseded
SupersededBy
Supersedes
UnderRevision

First published as AS 4795-2002.

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 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 2738-2000 Copper and copper alloys - Compositions and designations of refinery products, wrought products, ingots and castings (Reconfirmed 2018)
AS 1111.1-2000 ISO metric hexagon bolts and screws - Product grade C - Bolts
AS 1627.4-2002 Metal finishing - Preparation and pretreatment of surfaces - Abrasive blast cleaning
AS/NZS 1554.1:2000 Structural steel welding Welding of steel structures
AS/NZS 4158:1996 Thermal-bonded polymeric coatings on valves and fittings for water industry purposes
AS 1833-2002 Austenitic cast iron
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 1831-2002 Ductile cast iron
AS 1830-2002 Grey cast iron
AS 2074-1982 Steel castings

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