BS ISO 4437-3:2014
$167.15
Plastics piping systems for the supply of gaseous fuels. Polyethylene (PE) – Fittings
| Published By | Publication Date | Number of Pages |
| BSI | 2014 | 42 |
This part of ISO 4437 specifies the characteristics of fusion fittings made from polyethylene (PE) as well as of mechanical fittings for piping systems in the field of the supply of gaseous fuels.
It also specifies the test parameters for the test methods referred to in this part of ISO 4437.
In conjunction with ISO 4437-1, ISO 4437-2, ISO 4437-4, and ISO 4437-5, it is applicable to PE pipes, fittings and valves, their joints, and joints with components of PE and other materials intended to be used under the following conditions:
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the maximum operating pressure (MOP) is based on the design stress, determined from the compound minimum required strength (MRS) divided by the C factor, and taking into account rapid crack propagation (RCP) requirements;
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a temperature of 20 °C as reference temperature for the design basis.
NOTE 1 For other operating temperatures, derating coefficients are given in ISO 4437-5:2014.
NOTE 2 It is the responsibility of the purchaser or specifier to make the appropriate selections from these aspects, taking into account their particular requirements and any relevant national regulations and installation practices or codes.
This part of ISO 4437 is applicable for fittings of the following types:
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electrofusion socket fittings;
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electrofusion saddle fittings;
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spigot end fittings (for butt fusion using heated tools and electrofusion socket fusion);
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socket fusion fittings;
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mechanical fittings.
The fittings can for example be in the form of couplers, saddles, equal and reduced tees, reducers, elbows, bends, or end caps.
NOTE 3 Fabricated fittings are normally not used for gas applications except for larger dimensions or in the absence of other solutions. Guidance can be found in ISO 4427-3:2007, Annex B.[2]
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 6 | Foreword |
| 7 | Introduction |
| 9 | Section sec_1 Section sec_2 1 Scope 2 Normative references |
| 11 | Section sec_3 Section sec_3.1 Section sec_3.2 Section sec_3.2.1 Section sec_3.2.2 Section sec_3.3 Section sec_3.4 Section sec_3.5 Section sec_3.6 3 Terms and definitions, symbols, and abbreviations |
| 12 | Section sec_3.7 Section sec_4 Section sec_4.1 Section sec_4.2 Section sec_4.2.1 Section sec_4.2.2 Section sec_4.2.3 4 Materials 4.1 PE compound 4.2 Material for non-polyethylene parts |
| 13 | Section sec_4.2.4 Section sec_5 Section sec_5.1 Section sec_5.2 Section sec_5.3 Section sec_5.4 Section sec_5.5 5 General characteristics 5.1 Appearance 5.2 Colour 5.3 Design 5.4 Appearance of factory made joints 5.5 Electrical characteristics for electrofusion fittings |
| 14 | Section sec_6 Section sec_6.1 Section sec_6.2 Section sec_6.2.1 Table tab_a Figure fig_1 6 Geometrical characteristics 6.1 Measurement of dimensions 6.2 Dimensions of electrofusion socket fittings |
| 15 | Table tab_1 |
| 16 | Section sec_6.2.2 Table tab_2 Section sec_6.2.3 Section sec_6.2.4 Section sec_6.2.5 Section sec_6.3 6.3 Dimensions of electrofusion saddle fittings |
| 17 | Table tab_b Figure fig_2 Section sec_6.4 Section sec_6.4.1 6.4 Dimensions of spigot end fittings |
| 18 | Table tab_c Figure fig_3 |
| 19 | Table tab_3 Section sec_6.4.2 |
| 20 | Section sec_6.4.3 Section sec_6.4.4 Section sec_6.5 Section sec_6.6 Section sec_6.6.1 Section sec_6.6.2 Section sec_6.6.3 Section sec_6.6.4 Section sec_7 Section sec_7.1 6.5 Dimensions of socket fusion fittings 6.6 Dimensions of mechanical fittings 7 Mechanical characteristics 7.1 General |
| 21 | Section sec_7.2 Section sec_7.3 Section sec_7.4 7.2 Requirements 7.3 Performance requirements 7.4 Modifications of the fitting |
| 22 | Table tab_4 |
| 23 | Table tab_5 |
| 24 | Table tab_6 Section sec_8 Section sec_8.1 Section sec_8.2 8 Physical characteristics 8.1 Conditioning 8.2 Requirements |
| 25 | Table tab_7 Section sec_9 Section sec_10 9 Performance requirements 10 Technical file |
| 26 | Section sec_11 Section sec_11.1 Section sec_11.1.1 Section sec_11.1.2 Section sec_11.1.3 Section sec_11.1.4 Section sec_11.1.5 Section sec_11.2 Table tab_8 11 Marking 11.1 General 11.2 Minimum required marking of fittings |
| 27 | Section sec_11.3 Section sec_11.4 Section sec_12 11.3 Additional marking 11.4 Fusion system recognition 12 Delivery conditions |
| 28 | Annex sec_A Table tab_A.1 Table tab_A.2 Annex A (normative) Socket fusion fittings |
| 29 | Table tab_d Figure fig_A.1 |
| 30 | Annex sec_B Annex sec_B.1 Table tab_e Figure fig_B.1 Annex B (informative) Examples of typical terminal connection for electrofusion fittings |
| 31 | Table tab_f Figure fig_B.2 |
| 32 | Annex sec_B.2 Table tab_g Figure fig_B.3 |
| 33 | Annex sec_C Annex sec_C.1 Annex sec_C.2 Annex sec_C.2.1 Annex sec_C.2.2 Annex sec_C.2.3 Annex sec_C.3 Annex sec_C.4 Annex C (normative) Short-term pressure test method |
| 34 | Annex sec_C.5 |
| 35 | Annex sec_D Annex sec_D.1 Annex sec_D.2 Annex sec_D.3 Annex sec_D.4 Annex sec_D.5 Annex D (normative) Tensile test for fitting/pipe assemblies Tensile test for fitting/pipe assemblies |
| 37 | Annex sec_E Annex sec_E.1 Annex sec_E.2 Annex sec_E.3 Annex sec_E.4 Annex sec_E.5 Annex E (informative) Formulae for calculating the equivalent dimensions of non-metric electrofusion socket fitting series Formulae for calculating the equivalent dimensions of non-metric electrofusion socket fitting series |
| 38 | Annex sec_E.6 Annex sec_E.7 |
| 39 | Reference ref_1 Reference ref_2 Reference ref_3 Reference ref_4 Reference ref_5 Reference ref_6 Reference ref_7 Reference ref_8 Bibliography Bibliography |
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