Gravity sewerage systems are the most common method of collecting and removing sewage and wastewater from properties and transporting it through a network of pipes for treatment and disposal. Vinidex has a comprehensive range of non-pressure PVC and PP pipe and fittings which are specifically intended for this purpose.
PVC drain waste and vent pipes, in sizes DN 150 to DN375, have a proven track record for sewerage pipes. As well as being cost-effective, lightweight and easy to install, they are resistant to infiltration, exfiltration and root penetration, which is an enormous benefit in a dry continent such as Australia. The Plastics Industry Pipe Association of Australia (PIPA) reports: In tests conducted by the CSIRO Building, Construction and Engineering Division, to measure the performance of various pipe materials to root penetration, PVC pipes came out with a perfect score in that there was nil root intrusion in any of the samples tested….(read more)
Lismore City Council says “Council strongly recommends unplasticised poly-vinyl chloride pipes when laying new sewer pipes or replacing old sewer pipes in areas at risk of tree root intrusion. Roots find it virtually impossible to infiltrate well-constructed UPVC pipes, while the older style vitreous clay pipes are known to be prone to root infiltration.”
Vinidex’s SewerPRO® pipe and fitting system represents the new generation of structured wall sewer pipes. SewerPRO® pipe is extremely material efficient. Its corrugated cross-section achieves levels of lateral stiffness that would otherwise require far greater wall thickness with a corresponding need for more raw materials. It’s cost-effective and provides significant project savings over traditional materials. Even large diameters of up to 900mm are light enough to be easily transported, handled and installed. A complete range of fittings is available for SewerPRO®.
Polyethylene pipe is particularly effective in the rehabilitation of existing sewers in need of renewal. Relining the existing pipe with polyethylene is a proven and effective solution. PE is fully resistant to corrosive attack by the constituents of sewerage, including sulphide gas. Vinidex Sewertech is dual wall co-extruded black over light grey high density polyethylene pipe. It is the first-ever purpose built pipe for pipe bursting and sliplining applications and is designed specifically for the waste-water industry, making it most suitable for gravity sewerage and drainage applications. The black external layer provides high scratch and UV resistance, while the light coloured internal surface is non-light scattering providing good reflection properties for manual and video inspection purposes.
In situations where gravity pipelines are not feasible, sewage is pumped under pressure in sewer rising mains. In these applications, pressure pipes are required and Vinidex PVC pressure pipes, including Supermain PVC-O and Hydro PVC-M and PE pressure pipes can be used. Cream is commonly used as the identification colour for pressure sewer applications in Australia. PVC pressure pipes are coloured cream and PE pipes are black with cream stripes.