This Appraisal is for a range of Uni-Gib unrestrained mechanical couplings manufactured to comply with AS/NZS 4998:2009 Bolted unrestrained mechanical couplings for water works purposes. This Issue 2 is to update quality certification details.
The PN 16 couplings are designed to suit a wide range of outside diameters and are suitable for joining spigot ends of PVC-O, PVC-M, PVC-U, GRP, DI, AC, and steel pipes. They are not suitable for joining PE pipes.
The range of couplings includes sizes from DN 80 to DN 150 with short barrels and DN 80 to DN 300 with long barrels. The end rings are manufactured from thermal bonded polymeric coated ductile iron and the barrels are manufactured from Grade 316 stainless steel. Grade 316 stainless steel fasteners and EPDM seals are utilised in the couplings.