This Appraisal is for a range of injection moulded PVC-U fittings for drain, waste and vent applications and also includes a range of Heavy Duty fittings. This Issue 10 is to clarify that some of the additional fittings in Issue 9 were actually heavy duty. The C-Mark certification has been updated. Issue 9 was to include additional fittings to the scope of the Appraisal
The range of fittings includes bends, junctions, tapers, couplings and other associated configurations in sizes DN 100, DN 150 and DN 225, DN 300 and DN 375. The jointing system is predominantly Solvent Weld Joint (SWJ), however there are some Rubber Ring Joint (RRJ) products included.
AS/NZS 1260 nominates a minimum wall thickness for injection moulded fittings and advises that they are suitable for use with pipe up to SN16. However, some water agencies have reported incidents involving mechanical failure of DN 100 and DN 150 injection moulded fittings when used in property service connection assemblies due to ground movement, subsidence and settlement related issues. In response to Water Agency requirements WSA PS 230 has been amended to include an option for Heavy Duty fittings with increased minimum wall thicknesses.
A range of CIVILTEC Heavy Duty PVC-U fittings with additional wall thickness and strengthening ribs is included within the scope of this Appraisal.