On the Application of UPVC Pipeline in Water Treatment

PVC is polymerized from vinyl chloride monomer (VCM). PVC material is non-toxic, anti-aging, acid and alkali resistant, so it is very suitable for use in chemical pipelines. A mixture composed of PVC raw materials and a certain amount of solid additives (without plasticizers) is called rigid polyvinyl chloride (UPVC). Due to its excellent economic performance and characteristics, UPVC pipes are widely used nationwide, and their superiority is gradually replacing traditional steel pipes.

Advantages of using UPVC pipes in water treatment engineering:

1. Stable physical and chemical properties:

UPVC pipes are non combustible and do not support combustion, and have good water pressure resistance, impact resistance, and tensile strength. Stable chemical properties, corrosion resistance, wear resistance, and resistance to acid, alkali, salt, and oil media erosion. Not conductive, and not corroded by electrolysis or current. The unique mechanical properties of UPVC material enable it to be used normally for 50 years, reduce maintenance frequency, and lower operating costs;

2. Good hydraulic performance:

According to hydraulic calculations, the maximum water flow capacity of UPVC pipes is increased by 50% compared to traditional carbon steel pipes, with low resistance, high flow rate, smooth inner wall, low fluid flow loss, and difficulty for dirt to adhere to the smooth pipe wall;

3. Convenient construction:

UPVC pipes are lightweight with a density of only 1/10 of cast iron, making transportation convenient. Its connection form is socket bonding, which can be connected with specific adhesive. Practice has proven to be reliable and safe, easy to operate, low cost, simple installation process, saving expenses and shortening the construction period;

4. Aesthetics:

The outer wall of UPVC pipe is smooth, does not require anti-corrosion treatment, is easy to clean, and maintenance is relatively simple with extremely low maintenance costs. It has a good visual effect and can improve the working environment of the water treatment workshop.

Given the above advantages, UPVC pipes are widely used in water treatment design. Based on the experience of water treatment engineering practice, the author proposes the following aspects of attention for peer reference:

1. The quality of pipes and fittings is the material guarantee of pipeline engineering, and the procurement principle is "quality first, price follows quality". At present, there are more than 400 manufacturers, big and small, producing and selling UPVC in the market, and the quality is uneven. Some manufacturers engage in disgusting competition through unprincipled price reductions (focusing on raw materials and formulas). However, it is often difficult to accurately inspect the quality of UPVC pipes from the appearance, so many users purchase inferior products only considering the price, resulting in engineering accidents and losses that greatly exceed the value of the material itself;

2. As mentioned earlier, the installation process of UPVC pipes and fittings is simple, using adhesive bonding. It is precisely because of this that some on-site installation workers may encounter problems such as uneven application of glue and inadequate interface sockets in order to pursue project progress. After water supply, they may experience leakage and leakage in a short period of time, mainly due to the lack of basic knowledge and strong sense of responsibility among on-site workers;

3. As a plastic product, UPVC pipes have poor stiffness and a large coefficient of expansion. Therefore, it is necessary to choose the support reasonably. During construction, attention must be paid to the maximum spacing of the support, and it must be strictly carried out in accordance with the design and construction specifications.

More information can be found on the official website of Shenzhen Hongjie Water Technology Co., Ltd. www.czhengwei.net. If you need it, you can call the company's hotline for free at 180 3800 0078, and we will be happy to serve you.