Standard
UPDATE AVAILABLE
AS 6401-2003
[Superseded]Specifies requirements for Class 10 flanged, wafer and lugged, rising and non-rising spindle, uni-directional and bi-directional, gland box and bonneted knife-gate valves of sizes DN 50 to DN 1500 inclusive for cold potable water supply (up to 40 degrees Celsius) and drainage and sewerage systems continuous flow up to 45 degrees Celsius.
Published: 03/03/2003
Pages: 22
Table of contents
Cited references
Content history
Table of contents
Header
About this publication
Preface
1 Scope and general
1.1 Scope
1.2 Referenced documents
1.3 Definitions
1.4 Valve type
1.5 Designation of size
1.6 Allowable pressures
2 Materials and components
2.1 General
2.2 Corrosion-resistant materials
2.3 Contamination of water
3 Design
3.1 General
3.2 End connections
3.3 Component design—Welding and post weld heat treatment
3.4 Dimensions
3.5 Gate
3.5.1 General
3.5.2 Guides
3.5.3 Gate travel
3.5.4 Gland sealing
3.6 Component connections
3.7 Spindle
3.7.1 Spindle strength
3.7.2 Spindle thread
3.7.3 Spindle sealing
3.8 Lifting devices
3.9 Fasteners
3.10 Operation
3.10.1 General
3.10.2 Hand wheels
3.10.3 Direction of closure
4 Performance tests
4.1 General
4.2 Type tests
4.2.1 General
4.2.2 Body design pressure test
4.2.3 Strength test—Spindle, nut and gate connection
4.2.4 Gate strength test
4.2.5 Gate leakage test
4.2.6 Functional test
4.3 Production tests
4.3.1 Gate leakage test
4.3.2 Body test
5 Marking and packaging
5.1 Body markings
5.2 Packaging
Appendix A
A1 Scope
A2 Relevance
A3 Product certification
A4 Testing
A4.1 General
A4.2 Retesting
A4.3 Rejection after retest
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
Appendix D
D1 General
D2 Protective coatings
Cited references in this standard
AS/NZS 2938
Gears – Spur and helical—Guide to specification and rating
SAI HB18.28
Guidelines for third-party certification and accreditation, Guide 28: General rules for model third-party certification system for products