UNITE bag filters are widely used for liquid filtration applications requiring efficient solid particle removal, easy operation, and reliable performance. According to different flow rates and process requirements, bag filters are available in two main types: single bag filters and multi bag filters.
The single bag filter is a compact and economical filtration solution designed for low to medium flow applications. It features a simple structure, easy installation, and quick filter bag replacement, making it suitable for processes requiring flexible operation and convenient maintenance.
The filter housing is available in various materials and configurations to meet different industrial requirements. It is widely used for removing suspended solids and impurities from liquids in water treatment, chemical processing, food & beverage, coatings, and other industries.
The multi bag filter is designed for high-flow industrial filtration applications requiring greater filtration capacity and longer operating cycles. Multiple filter bags are installed inside a single housing to provide a larger filtration area and higher dirt-holding capacity.
UNITE multi bag filters are available in standard multi-bag, parallel multi-bag, and quick-opening multi-bag configurations. The modular design allows flexible expansion according to flow requirements, while the quick-opening structure enables fast filter bag replacement for continuous production processes.
With high filtration efficiency, easy maintenance, and reliable operation, UNITE bag filters provide effective filtration solutions for a wide range of industrial applications.
Bag filters are designed for simple operation and easy maintenance. The filter bag with the required filtration rating is installed inside the filter housing, the O-ring seal is checked for proper positioning, and the housing cover is securely tightened before operation.
After the pump starts, the pressure gauge will show a slight pressure increase, with the initial operating pressure typically around 0.05 MPa. During filtration, solid particles and impurities are captured inside the filter bag. As filtration continues, accumulated contaminants gradually increase the pressure differential across the filter.
When the pressure reaches approximately 0.4 MPa, the system should be stopped for inspection. The filter housing cover can then be opened, and the filter bag should be cleaned or replaced according to the contamination level. Cleaned filter bags can generally be reused to reduce operating costs.
The recommended operating pressure is typically between 0.1 and 0.3 MPa, which can be adjusted through the return line or pump return valve. Excessive filtration pressure should be avoided, as it may damage the filter bag and support mesh.
| Model | Inlet/Outlet Size (DN) | Maximum Flow Rate (m³/h) | Filter Area (m²) | A(mm) | B(mm) | D(mm) | L(mm) |
|---|---|---|---|---|---|---|---|
| DS-B-S3 | 80 | 75 | 1.35 | 1203 | 262 | 450 | 350 |
| DS-B-S4 | 100 | 100 | 1.8 | 1206 | 280 | 500 | 400 |
| DS-B-S5 | 125 | 125 | 2.25 | 1268 | 313 | 550 | 400 |
| DS-B-S6 | 150 | 150 | 2.7 | 1288 | 313 | 600 | 450 |
| DS-B-S7 | 150 | 175 | 3.15 | 1370 | 350 | 700 | 500 |
| DS-B-S9 | 200 | 225 | 4.05 | 1440 | 740 | 750 | 550 |
| DS-B-S10 | 200 | 250 | 4.5 | 1480 | 460 | 800 | 580 |
| DS-B-S14 | 250 | 350 | 6.3 | 1555 | 830 | 900 | 650 |
| DS-B-S17 | 300 | 425 | 7.65 | 1845 | 950 | 1000 | 715 |
| DS-B-S21 | 350 | 525 | 9.45 | 1925 | 980 | 1100 | 800 |
| DS-B-S24 | 350 | 600 | 10.8 | 2015 | 1000 | 1200 | 850 |
A Bag Filter is a filtration system that uses a fabric filter bag installed inside a housing to remove solid particles from liquids. It is widely used for industrial liquid filtration due to its simplicity and cost-effectiveness.
Liquid enters the filter housing and flows through the filter bag. Solid particles are trapped inside the bag while clean liquid exits the system. When the pressure drop increases, the bag is replaced or cleaned.
Key advantages include low initial cost, simple structure, easy maintenance, wide chemical compatibility, and suitability for a variety of industrial liquid filtration applications.
Bag filters are widely used in chemical processing, coatings and paints, petrochemical industry, food and beverage, pharmaceuticals, electronics, and wastewater treatment.
Bag filters are better for higher dirt-loading capacity and lower cost, while cartridge filters provide higher precision filtration but require more frequent replacement and higher operating cost.
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