High-pressure pipeline filter (A): Located in the pump outlet pipe, there is protection of pollutants from entering the system role. Therefore, the system's pollutant concentration can be controlled. However, because it is a high pressure main line, to be affected by the pulsation and pressure of the pump impact, so the filter element material, strength should be carefully considered.

1, the air filter: located in the tank, with the prevention of pollutants due to changes in the fuel tank with the air mixed with the fuel tank. Therefore, the filter accuracy to have the same performance with the filter, the capacity to leave sufficient room to prevent the hole due to obstruction to make the tank pressure becomes negative pressure, causing pump cavitation. Pay particular attention to the harsh environment.

2, high-pressure pipeline filter (A): located in the pump outlet pipe, there is protection of pollutants do not enter the system role. Therefore, the system's pollutant concentration can be controlled. However, because it is a high pressure main line, to be affected by the pulsation and pressure of the pump impact, so the filter element material, strength should be carefully considered.

3, suction filter: The filter is located in the suction pipe of the pump, filter out the residual fuel in the tank through the air holes into the contaminants, a protective pump. However, in order to avoid cavitation in the pump, sufficient attention should be paid to the pressure loss. Generally, a coarse metal mesh or notch wire material of 100-200 mesh is used. Therefore, it is not a filter that controls the pollution concentration of the system

4, back to the filter: located in the system of the return line, its role is to produce or in-system pollutants captured before returning to the tank. It is therefore the most effective and important filter that controls the concentration of contaminants in the system. Although it is a low-pressure pipe, pulsation or pressure shock may occur depending on the operating conditions of the transmission. Therefore, the material and strength of the element should be fully considered.

5, high-pressure pipeline filter (B): In the system, in order to protect the pollution-sensitive hydraulic parts, install this filter, also called the terminal filter. It is therefore often smaller than other filters. Therefore, when used to choose a large capacity. In addition to the components of the material, the same intensity (A) should be fully taken into account.

6, circulating filter: Located in the tank circuit of the oil return, the system capacity, so in demanding cleanliness requirements are often used, even if the system is not working, you can also capture the fuel tank, and therefore , The most effective way to reduce the concentration of pollution. In addition, the cooler is installed, which has the advantages of being capable of cooling at the same time and being easy to be repaired. But need to use special pumps and motors, high cost.