on the pipeline for medium transmission, usually installed at the import side in the valves,
pressure relief valves, water valves or other devices, used to remove impurities to protect the
normal use of valves and the equipments. When the fluid enters the home of a certain
size of filter cartridge, its impurities are blocked, and the clean filtrate discharged from the filter outlet,
and when clean is needed, it simply needs to remove the removable cartridge, and re-processed it into
the can after cleaning, therefore, the use and maintenance of the filter is extremely easy and convenient.
According to the different filter medium, filters can be divided into air filters, liquid filters, network filters,
light filters and water filters.
Air filter is the filter generally used to clean the air, usually used in the clean of workshops, plant rooms,
laboratories and rooms, or for the dust prevention of electronic communication devices and so on.
There are primary air filters, the efficient filters, HEPA filters and sub-efficient versions.
Various models have different standards and efficiency. The prototype of air filter is the breathing protective apparatus
people used to protect breath. According to records, early in the first century at Rome, people protected themselves
with masks made from hemp in the purification of mercury. A long time afer this, the air filter has also made progress,
but it is mainly used as a breathing apparatus to protect people in some dangerous industries,
such as in the production process of hazardous chemicals. In 1827, Brown discovered the movement of tiny particles,
then people got a better understanding of the air filtering mechanism.
In the liquid filters, tap water filter is one of the normally used filterss, which is used to filter tap water to fully meet the
standards of drinking and of cooking in the kitchen. This kind of purification equipment is called the water filter,
which is also known as pure water machine or water purifier. The tap water is in line with the national standards
when prepared to be out of the factory. However, the water flows through a few kilometers or tens of kilometers of
pipelines, then the quality of the water changed. The majority of the water pipe networks we daily used are the
cast iron pipes and galvanized pipes. In the accumulated oxidation in the water, the cast iron pipe
could become into iron hydroxide, which is the yellow floc material, and will produce precipitate while
encountered impurities. That's how the rust comes out that we encounter in daily life.
The same situation with the galvanized pipes. The inadequate protection of water pipe networks can easily lead to
the produce of moss, bacteria, organic chemicals and other harmful substances to our body that we often can not
see with the naked eye. Therefore, we need to install the water filters for our daily drinking water
(such as the cooking water and drinking water). Unhealthy water is easy to cause many diseases such as gastroenteritis,
cancer, gallstones, liver disease and a series of other illness. Therefore, the installation of water filtration equipments is needed.
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