According to EN 12201-3
7.3 Requirements
when tested in accordance with the test methods as specified in Table 4 using the parameters given in Table 4G the fitting shall have mechanical characteristics conforming to the requirements given in Table 4.
7.4 Retest in case of failure at 80 C
A fracture in a brittle mode in less than 165 h shall constitute a failure. However, if a sample in the 165 h test fails in a ductile mode in less than 165 h a retest shall be performed at a selected lower stress in order to achieve the minimum required time for the selected stress obtained from the line through the stress/time points given in Table 5.
7.5 Pressure drop
If required the manufacturer shall declare the pressure drop of a fitting for sizes up to 63 when determined in accordance with ISO 4059:1978.
7.6 Performance requirements
When 6.2.2 b- applies electrofusion socket fittings shall also be in accordance with Table 6.
8 Physical characteristics
8.1 Conditioning
Unless otherwise specified by the applicable test method, the test pieces shall be conditioned at (23 ± 2) °C before testing in accordance with Table 7.
8.2 Requirements
When tested in accordance with the test methods as specified in Table 7 using the indicated parameters, the fittings shall have physical characteristics conforming to the requirements given in Table 7.
According to EN 1555-3
7 Mechanical characteristics
7.1 General
The technical descriptions of the manufacturer shall include the following information:
a) field of application:
1) pipe and fitting temperature limits;
2) pipe series or SDRs;
3) out of roundness (ovality);
b) assembly instructions;
c) fusion instructions:
1) fusion parameters with limits;
d) data for saddles and tapping tees:
1) the means of attachment (tools and/or under clamp);
2) the need to maintain the under clamp in position in order to ensure the performances of the assembly. In the event of modification of the fusion parameters, the manufacturer shall ensure that the joint conforms to EN 1555-5.
NOTE Sample test assemblies should take account of manufacturing tolerances, assembly tolerances and ambient temperature variations at which the fittings can be used. The manufacturer should take due consideration of the recommended practices for installation of PE fittings, given in EN 12007-2:2000 [1]. Fittings shall be tested using pipes, which conform to EN 1555-2. Jointed pipe and fitting test pieces shall be assembled in accordance with the technical instructions of the manufacturer and take into account the extreme conditions of utilization described in EN 1555-5. The sample test assemblies shall take account of manufacturing and assembly tolerances. In the event of modification of the jointing parameters, the manufacturer shall ensure that the joint conforms to the requirements given in 7.2.
7.2 Requirements
Unless otherwise specified by the applicable test method, the test pieces shall be conditioned at (23 ± 2) °C before testing in accordance with Table 4.
When tested in accordance with the test methods as specified in Table 4 using the indicated parameters, the fittings shall have mechanical characteristics conforming to the requirements given in Table 4, as applicable to the following types of fitting:
(A) electrofusion socket fitting;
(B) electrofusion saddle fitting;
(C) spigot end fitting.
For mechanical fittings, the requirements of ISO 10838-1, ISO 10838-2 or ISO 10838-3, shall apply.
NOTE The ISO 10838 series of standards may be replaced by a new standard in the future.
7.3 Performance requirements
Where 6.2.2 b) applies, electrofusion socket fittings shall, additionally, be in accordance with Table 6.
8 Physical characteristics
8.1 Conditioning
Unless otherwise specified by the applicable test method, the test pieces shall be conditioned at (23 ± 2) °C before testing in accordance with Table 7.
8.2 Requirements
When tested in accordance with the test methods as specified in Table 7 using the indicated parameters, the fittings shall have physical characteristics conforming to the requirements given in Table 7.
