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AS/NZS 2638.2:2011
[Current]Gate valves for waterworks purposes, Part 2: Resilient seated
Specifies requirements for PN 16 and PN 25 metal-bodied resilient-seated gate valves for waterworks purposes.
Published: 27/05/2011
Pages: 34
Table of contents
Cited references
Content history
Table of contents
Header
About this publication
Preface
1 Scope and general
1.1 Scope
1.2 Application
1.3 Normative references
1.4 Definitions
1.5 Designation of size
1.6 Allowable pressures
2 Materials and components
2.1 Materials
2.2 Copper alloy components
2.3 Contamination of water
2.4 Seals
3 Design
3.1 General
3.2 Dimensions
3.3 End connections
3.3.1 General
3.3.2 Flanged ends
3.3.3 Socket ends
3.3.4 Spigot ends
3.3.5 Shouldered or grooved ends
3.4 Gate
3.4.1 Coating
3.4.2 Gate guides
3.4.3 Gate travel
3.5 Component jointing
3.5.1 Connections
3.5.2 Fasteners
3.6 Waterway
3.7 Spindle
3.7.1 Spindle diameter
3.7.2 Spindle thread
3.7.3 Spindle sealing
3.7.4 Thrust collar
3.7.5 Spindle seal retainer
3.8 Operation
3.8.1 General
3.8.2 Spindle cap and key
3.8.3 Extension spindle
3.8.4 Handwheels
3.8.5 Direction of closure
3.9 Lifting devices
3.10 Support feet
3.11 Bypass arrangements
4 Coatings
4.1 General
4.2 Design
5 Testing
5.1 Type tests
5.1.1 General
5.1.2 Strength test (thrust collar, spindle, nut and cap) (Test A)
5.1.3 Body pressure test (Test B)
5.1.4 Gate strength test (Test C)
5.1.5 Torque test (Test D)
5.1.6 Valve seat test (Test E)
5.1.7 Sensitivity test (Test F)
5.1.8 Functional test (Test G)
5.1.9 Spindle seal replacement or repair test (Test H)
5.1.10 Final inspection
5.1.11 Cyclic flow test (Test I)
5.1.12 Endurance cyclic flow test (Test J)
5.1.13 Gate rubber adhesion test (Test K)
5.1.14 Strength test (valve key) (Test L)
5.1.15 Strength test (spindle extension) (Test M)
5.2 Production tests
5.2.1 General
5.2.2 Body test (Test 1)
5.2.3 Valve seat test (Test 2)
5.2.4 Coating tests
6 Gearboxes
6.1 Design
6.1.1 Gearbox
6.1.2 Gearbox selection
6.1.3 Geared valves
6.2 Coatings
6.3 Markings
7 Marking and packaging
7.1 Body marking
7.2 Valve key and spindle extension marking
7.3 Direction of closure marking for handwheels and caps
7.4 Packaging
Appendix A
A1 Scope
A2 Relevance
A3 Testing
A3.1 General
A3.2 Testing
A3.3 Retesting
Appendix B
B1 General
B2 Information to be supplied by the purchaser
B3 Information to be supplied by the manufacturer
B4 Matters for agreement between the purchaser and the manufacturer
Appendix C
C1 General
Appendix D
D1 General
D2 Information required for gearbox selection
D3 Torque requirements of a valve
D3.1 General
D3.2 Torque to seal
D3.3 Running torque
D4 Standard gearbox ratios
D5 Gear ratio selection
D6 Final check
Amendment control sheet
AS/NZS 2638.2:2011
Amendment No. 1 (2017)
Revised text
Bibliography
Cited references in this standard
[Current]
Methods of test for elastomers, Method 15.1: International rubber hardness
[Current]
Elastomeric seals — Material requirements for pipe joint seals used in water and drainage applications, Part 1: Vulcanized rubber
Content history
[Current]
[Superseded]
DR AS/NZS 2638.2
AS/NZS 2638.2:2011 REC:2022
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