BS 437:2008
$102.76
Specification for cast iron drain pipes, fittings and their joints for socketed and socketless systems
| Published By | Publication Date | Number of Pages |
| BSI | 2008 | 18 |
This British Standard specifies the requirements for cast iron drain systems for use in buried applications or suspended within a basement, in areas not subject to fire regulations, where any pressure likely to occur is a maximum of 3.5 bar.
NOTE In this standard, all pressures are relative pressures, expressed in bars (100 kPa = 1 bar).
The nominal sizes of the drain systems are DN 100, DN 150 and DN 225 inclusive.
The standard specifies the requirements for materials, dimensions and tolerances, mechanical properties and surface condition for cast iron pipes and fittings. It also indicates performance requirements for all components, including joints.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 3 | Contents 1 Scope 1 2 Normative references 1 3 Terms and definitions 1 4 Technical requirements 3 5 Performance requirements for flexible joints 8 Annexes Annex A (normative) Test methods 9 Bibliography 12 List of figures Figure 1 – Socket dimensions 4 Figure 2 – Sealing zones for couplings 5 Figure A.1 – Crush test apparatus for pipes 11 List of tables Table 1 – Dimensions of pipes and fittings 3 Table 2 – Socket dimensions 4 Table 3 – Sealing zone lengths 6 Table 4 – Mechanical properties of pipes, fittings and couplings 6 |
| 4 | Foreword a) performance requirements for the joints, based on the requirements of BS EN 877; b) socketless fittings not previously covered in BS 437; c) ductile iron couplings for jointing socketless systems. |
| 5 | 1 Scope 2 Normative references 3 Terms and definitions 3.1 cast iron 3.2 coupling 3.3 drain 3.4 fitting |
| 6 | 3.5 flexible joint 3.6 gasket 3.7 joint 3.8 joint assembly 3.9 length 3.10 nominal size (DN) 3.11 pipe 3.12 rigid joint 3.13 sewer 3.14 type test 3.15 waste water |
| 7 | 4 Technical requirements 4.1 General 4.2 Surface condition 4.3 Dimensions 4.3.1 Nominal size 4.3.2 External diameter (DE) Table 1 Dimensions of pipes and fittings Dimensions in millimetres 4.3.3 Internal diameter of pipes 4.3.4 Wall thickness |
| 8 | 4.3.5 Socket dimensions for rigid joints Figure 1 Socket dimensions Table 2 Socket dimensions Dimensions in millimetres |
| 9 | 4.3.6 Straightness of pipes 4.3.7 End faces 4.3.8 Length of pipes 4.3.9 Length of fittings and sealing zones/socket depths Figure 2 Sealing zones for couplings |
| 10 | Table 3 Sealing zone lengths 4.3.10 Angles of fittings 4.3.11 Access components and traps 4.4 Mass 4.5 Material characteristics of pipes and fittings Table 4 Mechanical properties of pipes, fittings and couplings |
| 11 | 4.6 Coatings for pipes, fittings and couplings 4.7 Joints 4.7.1 General 4.7.2 Flexible joint materials 4.7.2.1 Couplings 4.7.2.2 Gaskets 4.8 Marking |
| 12 | 5 Performance requirements for flexible joints 5.1 General 5.2 Test conditions a) joint assembly aligned withdrawn and pressurized in accordance with BS EN 877; b) joint assembly deflected and pressurized in accordance with BS EN 877; c) joint assembly sheared and pressurized in accordance with BS EN 877. |
| 13 | Annex A (normative) Test methods A.1 Surface condition A.2 External diameter (DE) A.3 Internal diameter A.4 Wall thickness A.5 Socket dimensions A.6 Straightness of pipes A.7 End faces |
| 14 | A.8 Lengths A.9 Mass A.10 Crushing test A.10.1 Principle A.10.2 Apparatus A.10.3 Preparation of test pieces A.10.4 Procedure A.10.5 Results |
| 15 | Figure A.1 Crush test apparatus for pipes |
| 16 | Bibliography |
