Water-saving taps are not water-saving? Foreign “super energy-saving” faucets encounter water pressure embarrassment

In the summer again, more demand for water meets the desire to save water. We found that in the market, water-saving faucets are also more active than usual, and they have come forward to show off their water-saving capabilities. Are water-saving faucets really water-saving? When people are buying water-saving faucets one after another, some opinions shake consumers’ choices, “Improper spool of water-saving faucet leads to running and dripping”, “foreign water-saving faucet products have no water-saving effect in China “…At the same time, there are many brands in the market with “super energy-saving”, consumers do not know whether it is true or false.

Recently, the “Water-Saving Sanitary Ware” standard was promulgated, imposing stricter requirements on related products. So how should consumers judge the market’s attraction of “super energy-saving” and “water-saving taps are not water-saving”? “Guangsha Times” asked industry insiders for help.

Flow is not a single indicator

The quality of the faucet spool determines its water-saving performance

When it comes to water saving, the control of water flow has often become a core indicator for consumers to measure the performance of water-saving faucets. However, the consumer Ms. Zhang said of her distress: “The water flow has indeed changed significantly after installing the water-saving faucet, but after a long period of time, I found that it did not save much water.”

In fact, in addition to controlling the size of the water flow, another skill that a water-saving faucet should possess is to reduce dripping. Yan Jing, general manager of Beijing Millennium Lejia Building Materials, said that some old faucet spools will choose rubber and rubber materials, which are relatively low cost, but the frequency of dripping is high, and the water saving effect is very unsatisfactory. Generally speaking, the spool made of ceramic material has more stable physical properties, better sealing performance and longer service life.

Poor quality ceramic seals may also be sensitive and scratched to the sand and stones in the water. After dripping occurs, they need to be repaired and replaced in time. Once a line flow is formed, it may not only save water, but also become a source of waste water. , It is necessary to choose products of big brands as much as possible and avoid buying from small shops. At the same time, copper valve cores and stainless steel valve cores are also common in the market. Consumers need to be reminded that metal valve cores have higher requirements on the quality of materials. Once water rust, scale and other substances appear, they will be Water quality causes pollution.

Foreign “super energy-saving” faucets encounter water pressure embarrassment

In the case of domestic use

Many consumers who do not want to choose small brands have turned their attention to foreign brands, and the saying that “water-saving products of foreign brands have no effect in China” has never stopped. What are the facts?

Yan Jing gave his own answer to this: In the domestic market, water-saving faucets mainly include water-saving faucets and so-called ultra-energy-saving faucets. As long as the former is a big brand and can produce relevant inspection reports, it can basically achieve water-saving effects, but For the super energy-saving faucets in foreign brands, there are indeed problems with their use.

It is understood that general water-saving faucets mainly achieve water-saving purposes by limiting the flow to reduce unnecessary water loss, shortening the faucet switching time, reducing waste in the switching process, and ceramic sealing to reduce dripping. However, many foreign brands have ” The “super energy saving” effect requires a certain value of water pressure to control the flow, and the foreign water pressure is often greater than the domestic value. This type of product is not used in China to save water, but excessive water saving, resulting in low water pressure. The amount of water flowing through is too small, causing a lot of inconvenience to people’s lives.

The national standard has requirements for “water saving”

Consumers should pay attention to product test reports

Regarding how consumers should choose water-saving faucets, Yan Jing said that the simplest way is to look at the product’s test report. There will be data on each performance. If you can’t even get the test report, there is no need to choose the product.

At the same time, relevant experts stated that the assessment standards for the environmental safety of faucets such as the “Safety Evaluation of Drinking Water Distribution Equipment and Protective Materials” and “Lead Outlet Limits” should be in line with the recently released “Water-Saving Sanitation” Sanitary ware” (GB/T31436-2015) common reference. The standard makes requirements for ceramic sheet sealing nozzles, non-contact faucets and other appliances. The flow range of the scrubber faucet and non-contact faucet is 2.0 to 7.5 liters/minute, and the water supply time for one opening is 4 to 6 seconds. It is understood that the standard will be formally implemented at the end of the year.