AS 4883-2008

1 - AS 4883-2008 AIR VALVES FOR SEWERAGE
4 - PREFACE
5 - CONTENTS
6 - SECTION 1 SCOPE AND GENERAL
6 - 1.1 SCOPE
6 - 1.2 APPLICATION
6 - 1.3 NORMATIVE REFERENCES
6 - 1.4 DEFINITIONS
6 - 1.4.1 Allowable operating pressure
6 - 1.4.2 Allowable site test pressure
6 - 1.4.3 Coating
6 - 1.4.4 Coating defect
6 - 1.4.5 Distortion
7 - 1.4.6 Isolating valve
7 - 1.4.7 Maximum allowable operating pressure
7 - 1.4.8 Nominal size (DN)
7 - 1.4.9 Pressure class (PN)
7 - 1.4.10 Type test
7 - 1.5 TYPES AND FUNCTIONS
7 - 1.5.1 Full-port air valve
7 - 1.5.2 Reduced-port air valve
7 - 1.5.3 Large-orifice air valve (or air/vacuum valve)
7 - 1.5.4 Small-orifice air valve (or air-release valve)
7 - 1.5.5 Double-orifice air valve (or combination air valve)
7 - 1.5.6 Anti-slam air valves
8 - 1.6 DESIGNATION OF SIZE
8 - 1.7 ALLOWABLE PRESSURES
9 - SECTION 2 MATERIALS AND COMPONENTS
9 - 2.1 GENERAL
9 - 2.2 CORROSION-RESISTANT MATERIALS
9 - 2.3 DEZINCIFICATION-RESISTANT MATERIALS
9 - 2.4 O-RINGS (ELASTOMERIC TOROIDAL SEALS)
11 - SECTION 3 DESIGN
11 - 3.1 GENERAL
11 - 3.2 END CONNECTIONS
11 - 3.2.1 General
11 - 3.2.2 Flanged connection
11 - 3.2.3 Threaded connection
11 - 3.3 CASTINGS
11 - 3.4 COMPONENTS DESIGN
11 - 3.4.1 Large orifice valve
12 - 3.4.2 Small orifice valve
12 - 3.4.3 Double orifice valve
12 - 3.4.4 Cover
12 - 3.4.5 Valve outlet
12 - 3.4.6 Drain valve
12 - 3.4.7 Lifting devices
12 - 3.4.8 Fasteners
12 - 3.5 INTERCHANGEABILITY
13 - SECTION 4 PROTECTIVE COATINGS
13 - 4.1 GENERAL
13 - 4.2 DESIGN
14 - SECTION 5 PERFORMANCE TESTS
14 - 5.1 GENERAL
14 - 5.2 TYPE TESTS-STATIC TESTS
14 - 5.2.1 General
14 - 5.2.2 Test 1: Body strength test
14 - 5.2.3 Test 2: Seat test
14 - 5.2.4 Test 3: Seat sensitivity test
14 - 5.2.5 Test 4: Endurance test
15 - 5.2.6 Test 5: Unseating test
15 - 5.3 TYPE TESTS-DYNAMIC TESTS
15 - 5.3.1 General
15 - 5.3.2 Test 6A: Air discharge test
16 - 5.3.3 Test 6B: Air discharge test
16 - 5.3.4 Test 7: Air intake test
17 - 5.4 BATCH RELEASE TESTS
17 - 5.4.1 General
17 - 5.4.2 Test 1: Coating test
17 - 5.4.3 Test 2: Body test
17 - 5.4.4 Test 3: Seat test
17 - 5.4.5 Test 4: Seat sensitivity test
18 - SECTION 6 MARKING AND PACKAGING
18 - 6.1 BODY MARKINGS
18 - 6.1.1 On body of valve
18 - 6.1.2 Nameplate or label
18 - 6.2 PACKAGING
19 - APPENDIX A - MEANS FOR DEMONSTRATING COMPLIANCE WITH THIS STANDARD
19 - A1 SCOPE
19 - A2 RELEVANCE
19 - A3 PRODUCT CERTIFICATION
19 - A4 TESTING
19 - A4.1 General
19 - A4.2 Retesting
20 - A4.3 Rejection after retest
22 - APPENDIX B - PURCHASING GUIDELINES
22 - B1 GENERAL
22 - B2 INFORMATION TO BE SUPPLIED BY THE PURCHASER
23 - B3 INFORMATION TO BE SUPPLIED BY THE MANUFACTURER
24 - APPENDIX C - NORMATIVE REFERENCES
26 - APPENDIX D - ALTERNATIVE MATERIALS REQUIREMENTS
27 - APPENDIX E - ALTERNATIVE COATING REQUIREMENTS-TWO-PACK HIGH-BUILD EPOXY COATING
27 - E1 SCOPE
27 - E2 SURFACE PREPARATION
27 - E3 MATERIALS
27 - E4 APPLICATION AND FINISH

This Standard specifies requirements for metallic-bodied PN 10, PN 16 and PN 21 air valves for sewerage.

This Standard specifies requirements for metallic-bodied PN 10, PN 16 and PN 21 air valves for sewerage. This Standard is applicable to valve sizes DN 50 to DN 200 suitable for wastewater, with a maximum operating temperature of 60°C (see Note 2).This Standard covers the following types of valves:(a) Large-orifice air valve(b) Small-orifice air valve (c) Double-orifice air valve (d) Anti-slam air valveNOTES:1. Purchasing guidelines are given in Appendix B.2. Based upon a maximum sewage temperature of 40°C within the main and the air valve being located on the top of an above-ground pipeline.

First published as AS 4883-2008.