AS 4087-1996

1 - AS 4087:1996 METALLIC FLANGES FOR WATERWORKS PURPOSES
4 - PREFACE
5 - CONTENTS
6 - FOREWORD
7 - SECTION 1 - SCOPE AND GENERAL
7 - 1.1 SCOPE
7 - 1.2 REFERENCED DOCUMENTS
8 - 1.3 DEFINITIONS
8 - 1.4 CONFIGURATION
8 - 1.4.1 General
8 - 1.4.2 Type
9 - 1.4.3 Flange face
9 - 1.5 MARKING
9 - 1.5.1 General
9 - 1.5.2 Size
9 - 1.5.3 Information
11 - SECTION 2 - WORKING AND TEST PRESSURES
12 - SECTION 3 - MATERIALS
13 - SECTION 4 - MANUFACTURING REQUIREMENTS, DIMENSIONS AND TOLERANCES
13 - 4.1 MANUFACTURING METHOD
13 - 4.2 DIMENSIONS AND TOLERANCES
13 - 4.2.1 Thickness of flange
13 - 4.2.2 Outside diameter of flange
13 - 4.2.3 O-ring groove
13 - 4.2.4 Height of raised face
13 - 4.2.5 Diameter of raised face
13 - 4.2.6 Bolt holes
14 - 4.3 CONTACT SURFACES
14 - 4.3.1 General
14 - 4.3.2 Determination of surface roughness
14 - 4.3.3 Tolerances
14 - 4.4 SPOT-FACING AND BACK-FACING OF FLANGES
14 - 4.4.1 Parallelism of bearing surfaces
14 - 4.4.2 Diameter of spot-facing
14 - 4.4.3 Back-facing
14 - 4.4.4 Thickness of flanges after spot-facing or back-facing
14 - 4.5 PREPARATION FOR THE ATTACHMENT OF FLANGES
14 - 4.5.1 Screw-on flanges
15 - 4.5.2 Plate flanges
15 - 4.5.2.1 Plate flanges for welding
15 - 4.5.2.2 Plate flanges for brazing
16 - APPENDIX A - PURCHASING GUIDELINES
16 - A1 GENERAL
16 - A2 INFORMATION TO BE SUPPLIEDBY THE PURCHASER
16 - A3 INFORMATION TO BE SUPPLIED BY THE MANUFACTURER
17 - APPENDIX B - DIMENSIONS OF FLANGES
17 - B1 SCOPE
17 - B2 DIMENSIONS
27 - APPENDIX C - SELECTION OF BOLTING
27 - C1 SCOPE
27 - C2 BOLTING
27 - C3 SELECTION OF STUDBOLTS
27 - C4 GALVANIZED COATING
28 - APPENDIX D - ASSEMBLY OF FLANGED JOINTS
28 - D1 SCOPE
28 - D2 FLANGE FACES
28 - D3 GASKETS
28 - D3.1 Selection
28 - D3.2 Material
28 - D3.3 Dimensions
28 - D4 O-RINGS (ELASTOMERIC TOROIDAL SEALS)
28 - D4.1 Material
28 - D4.2 Method of manufacture
28 - D4.3 Dimensions
28 - D4.4 Assembly
28 - D5 BOLTING
29 - D6 TESTING
29 - D6.1 Flanges
29 - D6.2 Flanged joints

Specifies flanges principally intended for waterworks purposes, with working and test pressures for Classes 14, 16, 21 or 35 at temperatures not exceeding 80 degrees Celsius, that have bolting details compatible with the appropriate table of AS 2129. Dimensions are given for copper alloy plate and integral without neck flanges, ductile cast iron screw-on and integral with neck flanges, grey cast iron integral with neck (for pipe fittings) and integral without neck (for other than pipe fittings) flanges and steel blank, plate and integral without neck flanges for ranges of DN (nominal size) and class. Specifies grades of material and requirements for selection of bolting and assembly of flanged joints.

This Standard specifies requirements for circular flanges manufactured from copper alloy, ductile cast iron, grey cast iron, or steel. It covers nominal sizes (see Table 2.1) with pressure ratings for Classes 14, 16, 21 or 35 at temperatures not exceeding 80C. The flanges are for use on pipes, pipe fittings, valves and other equipment that are primarily intended for the conveyance or storage of water or wastewater. NOTE: Guidelines to purchasers on information that should be supplied at the time of enquiry ororder are detailed in Appendix A.

First published as AS 4087-1993.
Second edition 1996.