Screen Filter – Filtering Impurities, Protecting Your Irrigation System

Screen filter is a precision device that directly intercepts impurities in the water with a filter screen. It removes suspended solids and particles, reduces turbidity, purifies water quality, minimizes system fouling, bacteria, algae, rust, and protects other equipment in the system for normal operation.

In agricultural irrigation, screen filters are often used in conjunction with primary filters as secondary filter, which can effectively prevent blockages in devices like irrigators.

4 different types of screen filters and 5 different filter cartridges
Working Principle

The screen filter mainly consists of a tank and a filter screen. Untreated water flows into the tank through the inlet, where impurities larger than the mesh aperture are intercepted on the outer surface of the filter screen. The water filtered through the screen flows towards the outlet, thus achieving the purpose of purifying water quality and protecting subsequent equipment from malfunction due to blockage by impurities.

The filter element is made of stainless steel wire mesh, and its filtering capacity is determined by the mesh count. The higher the mesh count, the better its filtering capacity.

A schematic diagram of the working principle of a screen filter
Features
  • The housing is made of high-pressure resistant plastic, making it durable and long-lasting.
  • The filter screen is made of stainless steel, corrosion-resistant.
  • No leakage, low head loss (in a flowing water channel, the mechanical energy lost per unit weight of liquid as it flows from one section to another due to friction and other factors), and a wide flow range.
  • It has a large filtration area and low friction loss, allowing for longer intervals between cleanings.
  • Simple structure, easy installation, and the filter screen can be removed from the filter for convenient cleaning.
  • Available in various specifications to meet different filtration needs.
  • A Y-type screen filter and a filter cartridge

    Y-type screen filter

  •  A T-type screen filter and a filter cartridge

    T-type screen filter

  • An H-type screen filter and a filter cartridge

    H-type screen filter

  • A hand-cranked screen filter and a filter cartridge

    Hand-cranked screen filter

Y-Type Screen Filter

The Y-type screen filter mainly consists of a filter element, housing, and top cover. The housing is made of high-pressure-resistant plastic, and the filter element is made of stainless steel mesh. Its inlet and outlet are usually located on the same side, forming a 'Y' shape. This design is typically used for quick sewage discharge.

Structure
  1. Top Cover.
  2. Filter Element.
  3. Housing.
A y-type screen filter and a filter cartridge
Specifications
2 dimensional diagrams of a y-type screen filters
Table 1: Y-Type Screen Filter Dimensions
Model H
(mm)
W
(mm)
D
(mm)
YS-1 173 176 93
YS-2 173 192 83
YS-3 173 176 93
YS-4 173 192 83
YS-5 230 250 120
YS-6 230 250 120
YS-7 260 290 140
YS-8 330 360 168
YS-9 330 360 168
Table 2: Y-Type Screen Filter Technical Parameters
Model Connection Pipe Diameter
BSP/NPT
Filter Rating
(Mesh)
Maximum Flow Rate
(m3/h)
Maximum Pressure
(bar)
Filtration Area
(cm²)
Weight
(kg)
YS-1 3/4" 80 / 120 5 8 160 0.30
YS-2 3/4" 120 5 8 190 0.25
YS-3 1" 80 / 120 6 8 160 0.30
YS-4 1" 120 6 8 190 0.25
YS-5 1-1/4" 80 / 120 10 8 265 0.71
YS-6 1-1/2" 80 / 120 14 8 265 0.72
YS-7 2" 80 / 120 25 8 485 0.98
YS-8 2-1/2" 120 30 8 565 2.03
YS-9 3" 120 35 8 565 2.10
T-Type Screen Filter

The T-type screen filter mainly consists of a filter element, a housing, and a top cover. Its inlet and outlet are usually located on the same side, forming a 'T' shape. This design is suitable for use in limited spaces.

Structure
  1. Pressure Detection Interface
  2. Pressure Detection Interface
  3. BSP/NPT Connection Port
  4. Drain Bolt
  5. Top Cover
  6. Filter Element
  7. Housing
A T-type screen filter and a structural diagram of the T-type screen filter
Specifications
2 dimensional diagrams of a T-type screen filters
Table 3: T-Type Screen Filter Dimensions
Model H
(mm)
X
(mm)
D
(mm)
TS-1 280 205 139
TS-2 280 205 139
TS-3 280 205 139
TS-4 620 320 220
TS-5 740 320 220
TS-6 630 320 220
TS-7 750 320 220
TS-8 630 340 220
TS-9 750 340 220
Table 4: T-Type Screen Filter Technical Parameters
Model Connection Pipe Diameter
BSP/NPT
Filter Rating
(Mesh)
Maximum Flow Rate
(m3/h)
Maximum Pressure
(bar)
Filtration Area
(cm²)
Weight
(kg)
TS-1 1-1/4" 80 / 120 10 8 265 0.81
TS-2 1-1/2" 80 / 120 14 8 265 0.83
TS-3 2" 80 / 120 20 8 265 0.85
TS-4 2" 40 / 80 / 120 / 150 / 200 / 300 30 10 1200 4.8
TS-5 2" 40 / 80 / 120 / 150 / 200 / 300 30 10 1700 5.3
TS-6 2-1/2" 40 / 80 / 120 / 150 / 200 / 300 40 10 1200 4.9
TS-7 2-1/2" 40 / 80 / 120 / 150 / 200 / 300 40 10 1700 5.5
TS-8 3" 40 / 80 / 120 / 150 / 200 / 300 50 10 1200 5.1
TS-9 3" 40 / 80 / 120 / 150 / 200 / 300 50 10 1700 5.8
H-Type Screen Filter

The main structure of the H-type screen filter is H-shaped, primarily composed of 2 stainless steel filter elements and a plastic housing. Its inlet and outlet are usually located on both sides, forming an 'H' shape. This design facilitates the observation and cleaning of the filter.

Structure
  1. Plastic Housing
  2. Stainless Steel Filter Element
  3. Clamp
An H-type screen filter and 2 filter cartridges
Specifications
4 Structural dimension diagrams of a H-type screen filters
Table 5: H-Type Screen Filter Dimensions
Model H
(mm)
W
(mm)
D
(mm)
HS-1 940 335 220
HS-2 1200 335 220
HS-3 960 340 220
HS-4 1220 340 220
Table 6: H-Type Screen Filter Technical Parameters
Model Connection Pipe Diameter
(BSP/NPT/GRV)
Filter Rating
(Mesh)
Maximum Flow Rate
(m3/h)
Maximum Pressure
(bar)
Filtration Area
(cm²)
Weight
(kg)
HS-1 3 " 80 / 120 50 10 1630 7.8
HS-2 3 " 80 / 120 60 10 2174 9.2
HS-3 4 " 80 / 120 70 10 1630 8.2
HS-4 4 " 80 / 120 100 10 2174 9.6
Hand-Cranked Screen Filter

The hand-cranked screen filter is a semi-automatic cleaning filter. It uses a hand-cranking device to brush away dirt, impurities, and other particles from the filter screen with an internal brush, and then discharges them through a drain valve, eliminating the hassle of frequent disassembly. The main feature of this filter is that the cleaning process can be conducted online without stopping the filtration process, making it suitable for various liquid filtration applications.

Structure
  1. Housing
  2. Filter Element
  3. Clamp
  4. Inlet
  5. Outlet
  6. Hand Crank
  7. Drain Outlet
A hand-operated screen filter, 2 filter cartridges and hand-operated screen filter structure diagram
Specifications
5 dimension diagrams of a hand-cranked screen filter
Table 7: Hand-Cranked Screen Filter Dimensions
Model H1
(mm)
H2
(mm)
W
(mm)
X1
(mm)
X2
(mm)
D
(mm)
SS-1 960 905 345 335 280 220
SS-2 1085 1030 360 355 300 220
SS-3 975 920 345 335 280 220
SS-4 1100 1045 360 355 300 220
Table 8: Hand-Cranked Screen Filter Technical Parameters
Model Connection Pipe Diameter
(BSP/NPT/GRV)
Filter Rating
(Mesh)
Maximum Flow Rate
(m3/h)
Maximum Pressure
(bar)
Filtration Area
(cm²)
Weight
(kg)
SS-1 2" 120 30 10 890 8.3
SS-2 2" 120 30 10 1190 10.1
SS-3 3" 120 50 10 890 8.5
SS-4 3" 120 50 10 1190 10.45