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BS 8561:2021 – TC:2022 Edition

BS 8561:2021 – TC:2022 Edition

$186.33

Tracked Changes. Specification for mechanical fittings for use in the repair, connection and renovation of pressurized water supply pipelines. Requirements and test methods

Published By Publication Date Number of Pages
BSI 2022 106
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PDF Catalog

PDF Pages PDF Title
1 30448315
79 A-30426386
83 Foreword
85 Section 1: General
1 Scope
2 Normative references
86 3 Terms and definitions
88 4 Material characteristics
4.1 Effect on water quality
4.2 Materials
89 Table 1 — Materials for fitting body or components
4.3 Elastomers
4.4 Corrosion protection measures
5 General requirements
90 Section 2: Mechanical fittings for polyethylene barrier pipe
6 Dimensional requirements
6.1 Dimensions of couplings
6.2 Dimensions of flanged joints
7 Performance requirements
7.1 General
7.2 Test conditions
7.3 Hydrostatic pressure test for leak tightness under positive internal pressure
91 Table 2 — Parameters for long term test at elevated temperature
Table 3 — Parameters for short term test at elevated temperature
Table 4 — Parameters for short term test at 20 °C
7.4 Leak tightness of joints under negative internal pressure
7.5 Pull out performance
92 8 Marking for mechanical fittings for polyethylene barrier pipe
8.1 Marking
8.2 Additional information
93 Section 3: Mechanical fittings for use in the repair, connection, and renovation of pressurized water supply pipelines
9 Dimensional requirements
9.1 Dimensions of fittings
9.2 Dimensions of flanged joints
10 Performance requirements
10.1 General
94 10.2 Test assembly
Table 5 — Test assemblies
96 Figure 1 — External profile of grooved steel/ductile pipe: surface defects
97 Figure 2 — Test assembly for all fittings excluding flange adaptors
Figure 3 — Test assembly for flange adaptors
98 Table 6 — Minimum angular deflection of a flexible joint
10.3 Test conditions
10.4 Performance requirements
100 11 Marking and additional information for mechanical fittings connecting, repairing and renovating water supply pipes
11.1 Marking
11.2 Additional information
101 Annex A (normative)  Strength and resistance to distortion test
102 Table A.1 — Flange bolt torque in Nm [1.5 × nominal torque to seal at the respective flange (PN and DN)]
103 Annex B (informative)  Test matrix for mechanical fittings for use in the repair, connection, and renovation of pressurized water supply pipelines
Table B.1 — Test matrix for wide tolerance coupling, wide tolerance stepped coupling, wide tolerance flange
Table B.2 — Test matrix for repair clamp, joint encapsulation, UPT with full pipe surface contact sealing
104 Table B.3 — Test matrix for UPT with local sealing
105 Bibliography

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BS 8561:2021 - TC
$186.33