This Appraisal is for the Viking Johnson UltraGrip range of polymeric coated ductile iron wide tolerance restrained flexible joint couplings manufactured to EN 14525:2004 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.

When the couplings are used on PE pipes a Grade 316 stainless-steel support sleeve, supplied by Viking Johnson, is required to be inserted into the end of the pipe prior to installation of the coupling.

Viking Johnson literature advises suitability for PVC and GRP pipes, however WSAA does not recommend the use of gripping mechanisms on PVC or GRP pipes, due to the known propensity of failure at points of induced scratches or scores in the pipe wall. Accordingly, the use of UltraGrip couplings on PVC or GRP pipes is not endorsed in this Appraisal.

 

Product categoryRestrained flexible joint couplings
PA NumberPA 1827
Report holderCrane Building Services and Utilities
BrandViking Johnson UltraGrip
StandardEN 14525:2004 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
Publication date
Expiry date


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PA 1827 - CERTIFICATE - Viking Johnson UltraGrip Restrained Joint Couplings-Final.docx.pdf PDF