When the differential pressure of inlet and outlet reaches the pre-set value, the filter will start the cleaning process. The whole self-cleaning process includes two steps: 1. Turn on the drain valve which is on the filter top cover. 2. Two stainless steel brushes inside the filter mesh start to rotate which are driven by motor. The impurities captured by filter mesh are brushed by steel brush and discharged from drain outlet. The whole cleaning process takes about 15-60 seconds. During this time, the filtration system doesn’t interrupt the water supply and the whole operation process is controlled by a control box.

Feature and Advantage

Uninterrupted water supply: the water consumption of cleaning is very few, which is less than 5% of the total flow. The cleaning time is about 2~15 seconds. When it is cleaning and discharging, water supply is uninterrupted. 
High filtering accuracy: filtering accuracy can reach up to 20μm and there are all kinds of accuracy of filtering screen can be chosen. 
Large filtering area: effective filtering area of standard screen is 7-40 times of inlet area.
Reliable cleaning: a variety of control modes can be selected, such as manual, differential pressure, time, PLC control, etc. 
Simple and economical installation: varied structure forms, which are suitable for all kinds of site situation installation, without affecting the operating effect.
Long service life: normal life is more than 10 years. Filter screen is stainless steel, and it is convenient to change different size of filter screen according to the requirement.

•  Gravity Impurity Brush Self Cleaning Filter General Parameters

  Operating flow rate: 20-5000m3/h
  Different water quality and accuracy have different flow rate. Please contact supplier for the detail.
  Min working pressure: 2Kg
  If the working pressure is too low, then booster pump equipment can be set in the discharge pipeline.
  Max working pressure: 10Kg; 150psi
  High pressure type can be customized according to user’s requirement. Please contact supplier for the detail.
  Filtering area：3000cm2 -20000 cm2
  Inlet/outlet diameter：50,80,100,150,200,250,300,350,400,500,600,800mm;
  Max working temperature：50°C;
  Please notify us if the temperature is above this.

• 

• Cleaning Parameters

  Drain valve size：25mm; 50mm; 80mm;
  Cleaning time：30-60 seconds
  Cleaning water consumption(each time)：≤5%

• Filter Material

  Filter body: Carbon Steel with epoxy coating. SS304 or SS316L can be chosen as required.
  Filter mesh: SS316L wedge screen mesh/ SS316L woven wire mesh
  Cleaning mechanism (Internal): SS304/316L, POM
  Drain valve：Cast iron, with epoxy coating; 304，316L
  Seal ring: Synthetic rubber, PTFE

• Control and Power Distribution

  Control voltage：24V (option: 10V or 24V DC as required)
  Motor power：0.35-1.0 KW, 50Hz
  Rated operating voltage：3 Phase, 220/380V (as required)
  Electricity：1.5-2A

• Standard Filtering Rating

  Woven wire mesh accuracy：500, 300, 200, 130, 100, 80, 50, 25, 10 micron;
  Wedge screen mesh accuracy：50, 80, 100, 200, 300, 500 micron.