Document
WIS 4-21-02 Issue 1: Specification for mechanical couplings and repair clamps for iron pipes for the conveyance of cold potable water (underground use) for the size range 40 to 1600mm / 1.5 to 48″ inclusive
Replaced by:
BS 8561: 2013 (now replaced in turn by BS 8561: 2021).
Notes:
WIS 4-32-11 (20mm – 63mm) and BS 8561: 2021 (63mm – 630mm) should be used to specify fittings for use with PE barrier pipes.
BS 8561: 2021 should be used to specify fittings for use in the repair, connection and renovation of pressurized (iron, steel, PE and PVC) water supply pipelines.
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