Downpipe is an important part of the drainage system in buildings, houses, etc. Its main function is to divert rainwater from roofs, canopies, etc. to sewers or to disperse it to the surrounding environment. A PVC downpipe is a kind of drainage pipe made of polyvinyl chloride (PVC) material, which is mainly used in building rainwater drainage systems. PVC downpipe has many advantages, including corrosion resistance, high-temperature resistance, UV resistance, easy installation, and other characteristics, making it one of the most commonly used drainage system materials in modern buildings.
The role of downpipes
The main function of downpipes is to quickly drain water and reduce roof water accumulation, thereby preventing the impact of roof water accumulation on the building and load-bearing problems. The downpipe system collects rainwater from the roof and directs it to the rainwater pipes laid below the ground, effectively reducing roof water accumulation and avoiding possible building damage caused by rainwater accumulation.
The design and installation of downpipes take into account many factors to ensure the realization of their functions. First, the downspout system usually consists of a grille drain, a rain gutter, and a downspout, which work together to divert water from the gutter to the ground. Secondly, the choice of downspout materials is also very important, including metal pipes (such as cast iron pipes, colored aluminum pipes, copper pipes, colored steel pipes, etc.) and plastic pipes (such as PVC pipes, etc.). These materials are not only durable but also can adapt to the outdoor environment and withstand wind and rain for a long time.
PVC downpipe sizes australia
The size of PVC downpipe sizes australia is mainly based on the AS/NZS4441:2008 standard, which specifies the specifications and sizes of PVC downpipes in detail.
According to the AS/NZS4441:2008 standard, the specifications and sizes of PVC downpipes are usually classified by outer diameter and wall thickness. Common specifications and sizes include:
Outer diameter (mm): 20mm, 25mm, 32mm, 40mm, 50mm, 63mm, 75mm, 90mm, 110mm, 160mm, 200mm.
Wall thickness (mm): For small-diameter pipes, the wall thickness is usually 2.0mm, 2.5mm, 3.0mm, 3.2mm, and 4.0mm.
How to choose PVC downpipe?
When choosing a PVC downpipe, you need to decide the appropriate specifications and sizes based on the specific drainage needs and installation space. Common applications include drainage systems for residential and commercial buildings. During the selection process, the following installation steps should be noted:
1. Set fixed brackets at intervals of 1.5-2.0 meters according to the downpipe positions marked on the drawings.
2. After measuring the length of the pipe, it can be cut with a hacksaw, hand saw, or grinding wheel cutter. After sawing, the cross-section should be kept flat, and the burrs should be removed and chamfered with a steel file.
3. Clean the outer wall of the pipe and the inner wall of the pipe fitting with a dry cloth with detergent to remove pollutants.
4. Apply the solvent evenly to the outer wall of the pipe and the inner wall of the pipe fitting, then quickly insert the pipe into the pipe fitting and rotate it forcefully for at least 1/4 turn to ensure that the joint is tight and leak-free.
5. After bonding, wipe off the excess solvent and fix the pipe in place for a period of time. It should not be affected by external forces within 60 minutes.
6. After the pipe fitting is fully bonded, put it in the set bracket and tighten the bracket.
