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Heavy metal pollution of faucets is inevitable, and the valve core becomes the key to the process

Water consumption increases in summer, and faucets and showers are also selling seasonally. The test of these accessories in summer is mainly in two aspects. On the one hand, people use more frequently in their lives to cause certain loss; on the other hand, whether these “water switches” have good water-saving properties, so that water consumption season Increase water saving. The reporter’s investigation found that consumers are confused when choosing a faucet. It is indeed difficult for ordinary consumers to make accurate choices in terms of materials, processes, and valve cores.

Material: all copper is very different. Reminder: copper content is not equal to quality

Recently, when reporters came to a hardware market, many merchants would introduce their own superior products to consumers when selling faucets and showers. Among them, regarding the material, copper is definitely the main star. At present, the faucets on the market use copper alloys. According to merchants, this is mainly because copper casting metal has better fluidity and is not easily oxidized compared to steel. Many businesses often add a sentence about lead-free when introducing materials, and some businesses also emphasize the copper content. During the reporter’s inquiry, a business told reporters that the more copper the faucet contains, the better the quality. So is the quality of the faucet really related to the amount of copper?

The reporter interviewed a researcher from the laboratory of Beijing Construction Hardware Plumbing Product Quality Supervision and Inspection Station. The researcher told the reporter that the current faucets on the market are basically made of copper alloy, while other materials, such as stainless steel, have a very large market share. Low, the reason why copper alloy is used as the material for making faucets is mainly because copper itself has natural antibacterial properties and is more suitable for making faucets than other materials. The copper alloys used in making faucets have different grades and different grades. Copper alloys contain different amounts of copper. No matter which grade of copper alloy is, as long as it meets the national standards for that grade, it is considered a qualified product. The copper content can only indicate the manufacturer’s production cost, but not the quality.

Showers are also the most common “big accessories” in the hardware market. The material of the shower head is “copper strange”. After the reporter asked several merchants who specialize in selling hardware, the answer was that the materials are all copper. According to experts, the current shower heads on the Chinese market are mainly made of plastic, and some imported products are made of pure copper. The difference between the two is mainly in the production process and cost, but they are not comparable in terms of quality. It should be noted that my country’s current standards for the precipitation of metal pollutants are only set for lavatory and kitchen taps, and there is no mandatory metal pollutant precipitation standards for showers.

Process: Heavy metal pollution is unavoidable. Reminder: It can be solved by releasing water

In response to the problem of excessive heavy metals in copper alloy faucets and stainless steel faucets on the market, the researchers told reporters that both the material and the process may cause the heavy metals to exceed the standards. In terms of process, the heavy metals brought by electroplating exceed the standards. The material itself, because adding a small amount of lead can improve the cutting performance of brass, copper alloy faucets are prone to lead exceeding the standard, while the general stainless steel faucet often does not contain lead, but it may have the problem of cadmium and other heavy metals exceeding the standard, so consumers are recommended When buying a faucet, first choose a formal channel to purchase a certified faucet. But lead-free is not completely free of lead, but the precipitation value of lead meets the national standard that is not more than 5 micrograms/liter. If the faucet has not been used for a period of time, the water should be discharged first, and part of the water stored in the faucet should be drained to ensure the safety of water quality.

According to my country’s current “Ceramic Sheet Sealing Faucet” (GB18145-2014), there are clear regulations on the precipitation standard of metal pollutants applicable to washbasins and kitchen faucets. 17 kinds of metals including lead are in the new national standard. Mandatory standards are given. It is particularly important to note that since there is often electroplating in the process of making faucets, and some also involve secondary processing of copper, metal pollution will also occur in this series of processes. The new national standard gives The standard for the precipitation of metal contaminants is for the finished faucet.

Spool: the core of the faucet** key reminder: choose a comfortable damping feeling

The price of faucet ranges from tens of yuan to thousands of yuan. What is causing the price gap to be so huge? Does high price mean high quality? Researchers told reporters that the main reason why the price of faucet varies so much is Spool. At present, most of the faucet valve cores on the market are ceramic, and most of them are ceramic valve cores. On the one hand, ceramics have good wear resistance, and on the other hand, the cost of ceramics is low.

The reporter found that the same ceramic valve core, the ceramic used is different. The researchers explained that ceramics are indeed different, such as different hardness and different wear resistance, but for the valve core, the most important thing is not the material, but the gap in the structure and process technology of the overall valve core. The valve core not only has high hardness, strong wear resistance and long service life, but also has better adjustment performance and better adjustment accuracy during use. In addition, a good valve core can still effectively prevent water seepage under high pressure. It can also reduce the noise caused by water impact. The quality of faucets produced by regular manufacturers is basically no problem. In addition to the difference in material, the most important thing is the difference in structure, craftsmanship, and design.

There are tricks to check the valve core. Consumers can feel whether the product has a damping feel when turning the faucet handle. Good valve cores often have a comfortable damping feel. Some faucets with low damping feel are not recommended to buy. But many consumers said that the damping feel is a bit elusive like fog. If there is no professional inspection, how can I get this professional damping feeling?

How to choose Quickly choose a faucet

So how should consumers choose when actually buying a faucet? Industry insiders told reporters that when choosing a faucet, first look at the appearance. The overall appearance should conform to the current my country

“Ceramic sheet sealed faucet” (GB 18145-2014) national standard, the coating surface has a uniform gloss, and there should be no peeling, cracking, scorching, bottoming, peeling, dark spots, obvious pitting, burrs and other defects; coating surface The structure is fine, smooth, and uniform in color. There should be no defects such as sagging, bottoming, and obvious scratches and bumps; the polished surface should be smooth, and there should be no obvious burrs, scratches, and bumps.



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