This part of SANS 966 specifies requirements for unplasticized polyvinyl chloride) (PVC-U) pipes and injection-moulded fittings that are intended for above-ground and below-ground pressure applications for the conveyance of potable water in reticulation systems and for other applications in which continuous temperatures in excess of 25 °C are not encountered. Minimum wall thicknesses are given, based on a design stress rating of 10 MPa for pipes of nominal outside diameter 90 mm or less and 12,5 MPa for pipes of nominal outside diameter 110 mm and more. Seven classes of pipes and three classes of fittings for reticulation systems are covered.
Twenty-five nominal sizes of pipes for reticulation systems (ranging from 16 mm to 630 mm) are specified.
Fittings are restricted to those for use in reticulation systems and manufactured by injection moulding, and of nominal sizes in the range 16 mm to 200 mm. Fittings made by hot-gas fusion and hot-plate fusion techniques are not covered in this part of SANS 966. This part of SANS 966 includes requirements for the components of two types of joints in reticulation systems, i.e. solvent-weld joints (for pipes of nominal size not exceeding 200 mm) and rubber ring joints.
NOTE
1 Although the PVC-U pipes and fittings covered by this part of SANS 966 are intended for the conveyance of cold potable water, they may, subject to the approval of the manufacturer, be used for the conveyance of other liquids at other temperatures.
2 This part of SANS 966 does not cover pressure pipe systems that involve a PVC liner for chemical resistance and a fibre-reinforced plastics (FRP) wrapping for strength.
SANS 966-1:2006 history
1970SANS 966-1:2019 Components of pressure pipe systems Part 1: Unplasticized poly(vinyl chloride) (PVC-U) pressure pipe systems
2008SANS 966-1:2008 Components of pressure pipe systems Part 1: Unplasticized poly(vinyl chloride) (PVC-U) pressure pipe systems
2006SANS 966-1:2006 Components of pressure pipe systems Part 1: Unplasticized poly(vinyl chloride) (PVC-U) pressure pipe systems