Why does the sewer pipe of the sink often bend?

An S-type or P-type water seal pipe is arranged in the sewer pipe below the sink, in order to use a certain height of hydrostatic pressure to resist the change of air pressure in the drainage pipe, prevent the odor in the pipe from entering the room and avoid indoor pollution. Because of its special structure, the water seal pipe still has a certain height of water column after drainage, which prevents the gas in the pipe from being distributed indoors through sewer pipes such as sink, so it is named "water seal".

A sink is a device that collects gas or holds a lot of water by draining water, and can be used to wash tableware and food. Its main material is stainless steel. Besides stainless steel, there are also iron enamels and ceramics.

Kitchen sinks are divided into cast iron enamel, ceramics, stainless steel, artificial stone, granite sink (quartz mixed resin), steel plate enamel, acrylic, crystal stone sink, etc. According to the style, it is divided into single basin, double basin, large and small double basin and special-shaped double basin.

① The steel plate enamel sink is beautiful.

② Ceramic sink is durable and wear-resistant.

③ Granite sink is a mixture of quartz stone and natural resin. Patented technology is used to control the ratio of the two materials, so that the stone is firm and dense, and the resin is light and tough and durable. On the basis, you can also customize various colors, which are seamless and easier to match with kitchen decoration. It is the most popular new material on the market at present. Quartz stone sink was invented in Europe and America, and its market share is increasing day by day.

4 If you pay attention to the overall color of kitchen utensils, you can choose acrylic sink. Not only white, but also other colors that can match kitchen utensils.

⑤ Crystal stone sinks are mostly iron gray and beige, so be careful when using them. Sharp knives and rough things will scratch the surface and destroy the finish.

⑥ Stainless steel sinks have been popular for a long time, and they are widely used. This choice is not only because the metal texture of stainless steel is quite modern, but more importantly, stainless steel is easy to clean, the panel is light and thin, and it also has the advantages of corrosion resistance, high temperature resistance and moisture resistance. In terms of price, it ranges from several hundred yuan to several thousand yuan.

⑦ Cast iron enamel sink is durable, but it is rare in the market. Occasionally, there are imported products, the price is more than several thousand yuan, and ordinary people are afraid to ask.