Allied bag filters offer an efficient, economical and low-maintenance solution for liquid filtration in applications with variable solid loads.
Their modular design enables straightforward installation, high performance and fast maintenance through quick filter-bag replacement without the need for tools.
With their high dirt-holding capacity and wide range of available configurations, Allied bag filters are suitable for industrial processes in sectors such as food and beverage, chemicals, cosmetics, pharmaceuticals and water treatment, ensuring the protection of pumps, valves and process equipment.
Features
- Large filtration surface for low pressure drop and extended service life.
- Replaceable bag-type filter elements available in multiple micron ratings (from 0.5 to 1500 µm).
- Working pressures up to 10 bar and maximum temperature of 110 °C.
- Construction in stainless steel 304/316L or plastic materials (PP or PVDF) for corrosive applications.
- Compact, easy-access design with hinged cover and leak-tight closure.
- Single-bag or multi-bag versions to suit different flow requirements.
- Internal perforated stainless-steel baskets with high open area.
- Compliance with the European Pressure Equipment Directive (PED 2014/68/EU), with CE marking or ATEX certification available.
Options
- Metallic or plastic bodies depending on the fluid and service conditions.
- Filter bags in PP, PE, stainless steel or mesh, with different ring types (steel, plastic or moulded).
- Single or multi-bag configurations for high-flow applications.
- Threaded or flanged connections (DIN, ANSI) in various orientations.
- Optional heating jackets, bottom drains and top vents.
- Magnetic inserts for capturing metallic particles.
- Polished or electropolished internal finishes available on request for sanitary applications.
Allied Filters – Technical Specifications
| Parameter | Description |
|---|---|
| Filtration range | 0.5 – 1500 µm |
| Maximum flowrate | Up to 640 m³/h (depending on multi-bag model) |
| Maximum pressure | 10 bar |
| Maximum temperature | 110 °C |
| Body materials | Stainless steel 304 / 316L / PP / PVDF |
| Bag materials | Polypropylene, polyester, stainless steel |
| Connections | BSP threaded / DIN PN16 or ANSI 150# flanges |
| Closure | Hinged cover with O-ring (EPDM, Viton, PTFE) |
| Certifications | CE / PED / ATEX (upon request) |
Allied bag filters provide a practical and reliable solution for removing impurities from process liquids, combining high dirt-holding capacity with operational simplicity.
Their compact, modular design allows them to adapt to multiple flow and layout configurations, delivering consistent performance and rapid filter-element replacement.
Thanks to their versatility and low maintenance requirements, they are an excellent choice both as a primary filtration stage and for pre-filtration or final polishing duties in industrial liquid-handling systems.
Sizing Data for Allied Bag Filters
A bag-type filter is required for a process line with a flowrate of 500 litres/min, a pressure of 4 bar(g), and a fluid containing a moderate level of suspended solids.
The objective is to achieve a solid retention level of 25 µm while maintaining a pressure drop below 30 kPa.
- Verification of operating pressure and temperature: 4 bar(g) / 25 °C, within the standard operating range of the model.
- Filter element selection: Size-2 bag (0.5 m² surface area) with 25-µm rating and internal stainless-steel 316L support basket.
- Flow and pressure-drop evaluation: according to the performance curve, ΔP ≈ 0.25 bar, within the acceptable limit.
- Final selection: AIRPEL bag filter DN65 (2½”), stainless-steel 316L housing, one 25-µm filter bag, bottom drain and top vent.
Accessories and Spare Parts for Allied Bag Filters
A complete range of optional accessories allows the filters to be adapted to each customer’s specific requirements.
DIFFERENTIAL PRESSURE INDICATOR (D.P.I.)
Visual or electrical differential-pressure indicators are designed to monitor basket or bag condition and provide a visual signal when cleaning or replacing the filter element is required.
OPTIONAL ACCESSORIES AVAILABLE
- Replacement internal baskets, perforated or mesh stainless steel.
- Filter bags in various materials and micron ratings.
- Drain and vent valves in stainless steel or plastic.
- Heating jackets and thermal insulation.
- Magnetic inserts for ferrous-particle retention.
- Replacement gasket kits, closures and clamps.
Typical Applications
- Filtration of industrial water, glycols and oils.
- Pre-filtration in chemical or pharmaceutical treatment lines.
- Pigment or solid retention in paints and varnishes.
- Cosmetics and food-production processes.
- Cleaning or recirculation circuits for industrial liquids.
Allied bag filters combine technical performance, reliability and ease of maintenance.
Their modular design and wide material selection allow them to be adapted to any liquid-filtration process, ensuring stable, continuous operation with minimal downtime.
At Sistemiza, we approach every project from an engineering perspective: we select, size and deliver the optimal solution to keep your production line running at full performance.
If you want to learn more about this and other filtration solutions we offer, download our catalogue.
Contact our technical/commercial department and tell us how we can help you:
Email: info@sistemiza.com
Phone: (+34) 682 85 07 16