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

This document specifies the requirements and associated test methods applicable to wide tolerance ductile iron couplings and wide tolerance flange adaptors intended for use with pipe components made from a number of pipe materials (ductile iron, grey iron, PE, PVC-U, steel, fibre-cement), for providing a leak tight seal over a wide range of pipe external diameters : ⎯ to convey water (e.g. potable water) ; ⎯ with or without pressure ; ⎯ to be installed below or above ground, inside or outside buildings. This document is not intended to cover sewerage or gas applications, where other requirements may be necessary. This document specifies requirements for materials, dimensions and tolerances, mechanical properties and standard coatings of ductile iron products