Questions we get asked before an order.
Materials, pressure classes, hot water, jointing and supply. If the answer you need is not here, the enquiry form at the foot of the page reaches the same people.
Frequently asked questions
Questions we are asked about Wasser Pipes
Short, factual answers taken from the manufacturer's technical data. If your question is about a specific project, send it through the enquiry form and the team will answer directly.
Ask about your projectWasser Pipes covers three piping families. PP-R includes the plain standard range, UV Protected, Composite, UV Composite and Thermal Insulated pipes. PVC-U includes S.W.R. drainage pipes, Pressure pipes and Acoustic pipes. HDPE pipes are produced for water and gas from 20 mm to 110 mm.
PP-R is polypropylene random copolymer, used for hot and cold water inside buildings. HDPE is high-density polyethylene, joined by heat fusion into leak-free joints and supplied in long lengths for water and gas mains. PVC-U is unplasticised PVC, used for pressurised cold water supply and for soil, waste and rainwater drainage.
The PP-R range. Standard PP-R pipes can be used in cold and hot water facilities. PP-R Composite pipes are suitable for hot and cold water transfers in buildings as well as under-floor and central heating. PP-R Thermal Insulated pipes are made to attain better insulation than normal PP-R for hot and cold water.
PP-R UV Protected and PP-R UV Composite pipes. Both carry a UV protected layer comprised of UV resistant materials, which protects the pipe from flaking when exposed to sunlight over time. The UV Composite pipe adds a composite layer that gives rigidity with memory so runs can be laid straighter.
The PVC-U S.W.R. range, which stands for Soil, Waste and Rainwater. It is supplied in golden brown, grey and white, in 6 metre lengths. The PVC-U Acoustic pipe is also a drainage pipe, designed to reduce the noise that drainage makes inside a building.
The colour indicates where the pipe is installed. Golden brown drainage pipes are used in underground waste and rainwater systems. Grey pipes are used in above ground waste and rainwater systems. White pipes are used in both above ground and underground systems, and cannot be manufactured from recycled PVC.
The PVC-U Acoustic pipe. It is a multilayer pipe with outer and inner layers of conventional PVC and a middle hollow grid layer in the 110 mm and 160 mm sizes. That hollow layer gives an acoustic effect and reduces noise levels by more than 6 dB, while internal vanes reduce vortex and direct the flow.
Start from the application, then the temperature and pressure the line will actually see. The published data gives maximum operating pressures that fall as temperature rises, along with outside diameter, inside diameter and wall thickness for each size. Final pipe sizing and pressure selection should be confirmed by a qualified plumber or engineer.
Yes. Astral Industries Limited has a client base country-wide which includes hospitals, institutions, commercial offices, government parastatals, residential areas and farms. The range spans in-building plumbing in PP-R, drainage in PVC-U, and pressure mains in HDPE and PVC-U.
Use the enquiry form on this page. Tell us your location or county, the type of project, the product you are interested in and a short description of the work, and the Astral Industries Limited team will respond with a quotation. Specifications and product codes for every system are published on the product range page if you want to review them first.
Request a quote
Tell us about the project
Send the details and the Astral Industries Limited team will come back with a quotation and the right specification for the work.
Prefer to review the range first?
All 11 piping systems — PP-R, HDPE and PVC-U — are listed on the products page.