ONORM EN 14525 : 2005
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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DUCTILE IRON WIDE TOLERANCE COUPLINGS AND FLANGE ADAPTORS FOR USE WITH PIPES OF DIFFERENT MATERIALS: DUCTILE IRON, GREY IRON, STEEL, PVC-U, PE, FIBRE-CEMENT
05-01-2023
12-01-2013
Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Technical requirements
4.1 General
4.1.1 Diameter range
4.1.2 Surface condition and repairs
4.1.3 Types of joints and interconnection
4.2 Dimensional requirements
4.2.1 Wall thickness
4.2.2 Joint gap and depth of engagement
4.3 Mechanical properties of ductile iron
4.3.1 Tensile properties
4.3.2 Hardness
4.4 Coatings
4.4.1 General
4.4.2 Coating of ductile iron components
4.4.3 Coating of bolts and nuts
4.5 Product information
4.5.1 Marking requirements
4.5.2 Additional information
4.6 Leak tightness
4.6.1 Couplings and flange adaptors
4.6.2 Joints
5 Performance requirements for joints
5.1 General
5.2 Pressure rating
5.3 Flexible joints
5.3.1 General
5.3.2 Angular deflection
5.3.3 Test conditions
5.3.4 Test parameters
5.4 Restrained flexible joints
5.5 Flanged joints
6 Test methods
6.1 Tensile testing
6.1.1 Samples
6.1.2 Preparation of test bar
6.1.3 Apparatus and test method
6.1.4 Test results
6.2 Brinell hardness
6.3 Works leak tightness test
6.3.1 General
6.3.2 Air test
6.3.3 Hydrostatic pressure test
7 Performance tests
7.1 Leak tightness of joints to positive internal pressure
7.1.1 Coupling
7.1.2 Flange adaptor
7.2 Leak tightness of joints to negative internal pressure
7.3 Leak tightness of joints to dynamic internal pressure
Annex A (informative) Outside diameters of existing pipes
Annex B (informative) Quality assurance
Bibliography
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