How to choose water supply line

How to choose a water supply line

The choice of water pipes is crucial and is related to the health and safety of every family member. This article will give you a detailed introduction to how to buy water pipes so that you can choose a healthy and safe water supply line.

Galvanized pipes

For galvanized pipes that have not been used for a long time, "yellow" water will flow out, especially in galvanized iron pipes in old houses, which is very easy to occur and harmful to human health.

Since 2000, many countries have explicitly banned galvanized pipes, but some old communities, especially those that have not been renovated for more than 20 years, still use galvanized pipes as water pipes. After the galvanized pipes have been used for a period of time, there is a lot of rust in the pipes. The yellow water that flows out not only pollutes the sanitary ware, but also contains bacteria that grow on the rough inner wall. The rust causes the heavy metal content in the water to be too high, which seriously endangers human health.

At present, galvanized pipes are mostly used as gas, heating, and other pipelines.

PPR pipe

As a new type of water pipe material, PPR pipe has unique advantages. It can be used as both cold pipe and hot water pipe. Because of its non-toxicity, lightweight, pressure resistance, and corrosion resistance, it is the preferred water pipe material for decoration now.

PPR pipe is not only suitable for cold water pipes, but also for hot water pipes and even pure drinking water pipes.

The interface of the PPR pipe adopts hot melt technology, and the pipes are completely fused together. Once the installation pressure test is passed, there will be no aging and leakage for a long time, and the PPR pipe will not scale.

PPR water pipe is moderately priced and has stable performance. Under ideal conditions, the service life is up to 50 years, but its high-temperature resistance is slightly worse, and the long-term working temperature needs to be lower than 70℃.

① Environmental protection: The main material is random copolymer polypropylene, which is non-toxic and odorless and will not pollute the water source.

② High-temperature resistance: The temperature resistance range is about -15°~95°. Although the highest temperature is slightly lower than that of aluminum-plastic pipes, it is enough to meet the household water temperature.

Blue and red lines are generally used to mark cold water pipes and hot water pipes on water pipes.

③ Long service life: Strong pressure resistance, the working pressure of its water pipe system can reach 2.0Mpa~2.5Mpa, and many brands promise that it can be used for 50 years.

④ No water leakage: PPR pipe connection uses hot melt technology. As long as the water pipe is qualified and the hot melt connection technology is reliable, it can be guaranteed to be leak-proof forever.

Copper pipe

Copper pipes have stable performance, corrosion resistance, long service life, and will not breed bacteria, but can also sterilize.
There are two ways to connect copper pipes: ferrules and welding. Using ferrules is like aluminum-plastic pipes, which are prone to aging and leaking. Using welding is like hot melting of PPR pipes, which will never leak. However, copper pipes have poor thermal insulation properties. When using copper pipes as hot water pipes, they must be wrapped with thermal insulation cotton.

Stainless steel pipes
Stainless steel pipes are the best metal water pipes at present. They are highly resistant to corrosion and impact. The water pipe system pressure can reach more than 2.5Mpa. The temperature range is -40°~120°. They are environmentally friendly and hygienic. The installation is the same as copper pipes. It is best to use welding.

The size of the supply line is determined by the flow rate of the water coming into your home. The larger the flow rate, the larger the diameter pipe you need.

The diameter of water pipes usually has many specifications such as 16mm, 20mm, 25mm, 32mm, etc. For daily household water use, 16mm and 20mm water pipes are suitable for small water-using equipment such as water dispensers and wash basins. 25mm and 32mm water pipes are more suitable for large-flow water-using occasions such as showers, washing machines, and kitchens.