This Standard provides material requirements and performance tests for air valves in wastewater systems, together with default conformance requirements for use by manufacturers and certification bodies.
Table of contents
Header
About this publication
Preface
1 Scope and general
1.1 Scope
1.2 Demonstration of conformity with this standard
1.3 Normative references
1.4 Definitions
1.5 Types and functions
1.5.1 Anti-slam air valves
1.5.2 Double-orifice air valve (or combination air valve)
1.5.3 Full-port air valve
1.5.4 Large-orifice air valve (or air/vacuum valve)
1.5.5 Reduced-port air valve
1.5.6 Small-orifice air valve (or air-release valve)
1.6 Designation of size
1.7 Allowable pressures
2 Materials and components
2.1 General
2.2 Corrosion-resistant materials
2.3 Elastomeric components
2.4 Plastics components
3 Design
3.1 General
3.2 End connection
3.2.1 General
3.2.2 Flanged connection
3.2.3 Threaded connection
3.3 Castings
3.4 Components design
3.4.1 Cover
3.4.2 Double-orifice valve
3.4.3 Drain valve
3.4.4 Fasteners
3.4.5 Large-orifice valve
3.4.6 Lifting devices
3.4.7 Small-orifice valve
3.4.8 Valve outlet
4 Protective coatings
4.1 General
4.2 Design
5 Performance tests
5.1 General
5.2 Type tests—static tests
5.2.1 General
5.2.2 Test T1: Body strength test
5.2.3 Test T2: Seat test
5.2.4 Test T3: Seat sensitivity test
5.2.5 Test T4: Ultraviolet light test
5.2.6 Test T5: Endurance test
5.2.6.1 General
5.2.6.2 Large-orifice valve and anti-slam valve
5.2.6.3 Small-orifice valve
5.2.7 Test T6: Unseating test
5.2.8 Test T7: Disinfection product resistance test
5.3 Type tests—dynamic tests
5.3.1 General
5.3.2 Test T8: Air discharge test
5.3.3 Test T9: Air intake test
5.4 Production tests
5.4.1 General
5.4.2 Test P1: Coating test for metal components
5.4.3 Test P2: Body strength test
5.4.4 Test P3: Seat test
5.4.5 Test P4: Seat sensitivity test
6 Marking and packaging
6.1 Body markings
6.1.1 On body of valve
6.1.2 Nameplate or label
6.2 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
Appendix C
Appendix D
Appendix E
E1 Scope
E2 Surface preparation
E3 Materials
E4 Application and finish
Appendix F
F1 Scope
F2 Principle
F3 Apparatus
F4 Procedure
F5 Report
Appendix G
G1 Scope
G2 Variables
G3 Air flow measurement
G3.1 General
G3.2 Air flow test installation
G3.3 Mass air flow rate for large-orifice valves
G4 Normal flow rate for small-orifice valves
G5 Conversion of mass flow rate (ṁ) to ‘normal’ flow rate (Q)
G6 Air valve discharge and intake flow coefficient
