DN25–DN40 Self-Cleaning Wedge Wire Filter – Up to 3.5 m³/h
The FSC-50 is a compact industrial self-cleaning wedge wire filter available with DN25, DN32 and DN40 connection options. It is designed for continuous liquid filtration with a reference flow capacity of up to approximately 3.5 m³/h and uses a motor-driven mechanical scraper to clean the reusable stainless-steel filter element.
Its compact housing, 240 cm² wedge wire filtration area and operating pressure up to 16 bar make the FSC-50 suitable for lower-flow industrial process systems where automatic screen cleaning is preferred over manual cleaning or frequent replacement of disposable filter bags and cartridges.
Flow reference: the maximum reference flow of approximately 3.5 m³/h is based on water at approximately 100 µm. Actual capacity depends on viscosity, solids loading, filtration rating, pressure drop and other process conditions.
DN25–DN40 FSC-50 technical specifications
| Filter type | Automatic motor-driven scraper-type self-cleaning wedge wire filter |
|---|---|
| Filtra connection options | DN25 / DN32 / DN40 |
| Maximum reference flow | Approx. 3.5 m³/h at 100 µm with water |
| Available filtration ratings | 25–3000 µm |
| Filter surface area | Approx. 240 cm² |
| Housing volume | Approx. 1.5 litres |
| Operating pressure | 0–16 bar |
| Operating temperature | +10 °C to +80 °C standard |
| Filter head | Stainless-steel construction |
| Lower housing | Stainless steel 1.4404 / 1.4571 |
| Wedge wire filter element | Stainless steel 1.4404 |
| Internal components | Stainless steel 1.4301 |
| Scraper blade | Stainless steel 1.4310 |
| Drive | Industrial electric geared motor |
| Electrical supply | 400 V / 50 Hz standard; alternatives may be available on request |
| Protection class | IP54 standard; alternative / ATEX drive configurations may be available |
| Standard drain | ¾" BSPP on standard compact housing configuration |
| Standard vent | 1/8" BSPP on standard compact housing configuration |
| Pressure equipment | Manufactured in accordance with PED 2014/68/EU Article 4(3) |
| Manufacturing | Manufactured in the European Union |
How does the compact self-cleaning filter work?
Process liquid enters the FSC-50 housing and reaches the outside of the cylindrical wedge wire filter element. The liquid flows through the precision slots from outside to inside, while suspended particles larger than the selected filtration gap are retained on the outer surface.
The electric geared motor rotates the cylindrical wedge wire element against the scraper blade. Accumulated contamination is mechanically removed from the active filtration surface and moves into the lower solids-collection section.
The separated contamination can then be discharged through the drain using the pressure available inside the housing. Because screen cleaning takes place mechanically, the main liquid-filtration process can continue during the cleaning cycle.
DN25, DN32 or DN40 self-cleaning filter?
The FSC-50 is intended for compact lower-flow filtration systems and is offered by Filtra International with DN25, DN32 and DN40 connection options. This makes it useful for smaller process lines where a DN50 FSC-70 would provide more filtration capacity than the application requires.
Connection size should not be used as the only sizing criterion. A DN40 process line, for example, may still require a larger filter if the liquid has high viscosity, high solids loading or requires very fine filtration.
- DN25 self-cleaning filter for compact process piping
- DN32 self-cleaning filter for intermediate connection requirements
- DN40 self-cleaning filter for larger compact process lines
- Reference flows up to approximately 3.5 m³/h
- Automatic scraper cleaning without routine cartridge replacement
Automatic FSC-50 vs manual FSC-50M
The FSC-50 and FSC-50M use similar compact wedge wire filtration principles, but they are intended for different operating requirements.
The FSC-50 uses an electric geared motor to perform the scraper cleaning cycle automatically. The FSC-50M uses a manually operated cleaning mechanism and is more suitable where screen cleaning is only required periodically.
| FSC-50 | FSC-50M | |
| Cleaning method | Motor-driven scraper | Manual scraper |
| Best suited for | Frequent or automated cleaning | Periodic manual cleaning |
| Reference flow | Up to approx. 3.5 m³/h | Up to approx. 3.5 m³/h |
| Filtration range | 25–3000 µm | 25–3000 µm |
25 to 3000 micron compact self-cleaning filtration
The FSC-50 can be configured with reusable stainless-steel wedge wire elements from approximately 25 to 3000 µm.
- 25 µm
- 50 µm
- 100 µm
- 250 µm
- 500 µm
- 1000 µm
- 3000 µm
The required filtration rating directly affects pressure drop, achievable flow and cleaning frequency. A 25 or 50 µm process can therefore require a different filter selection from an application operating at 100, 250 or 500 µm.
Compact self-cleaning filtration up to 16 bar
The FSC-50 is designed for an operating pressure range of 0 to 16 bar and standard operating temperatures between +10 and +80 °C.
The final configuration should always be evaluated against liquid composition, selected seals, operating temperature and the pressure rating of the surrounding process installation.
Stainless-steel wedge wire construction
The FSC-50 uses corrosion-resistant stainless-steel process components and a reusable wedge wire filtration element designed for industrial service.
- Stainless-steel filter housing
- Lower housing in stainless steel 1.4404 / 1.4571
- Wedge wire filter element in stainless steel 1.4404
- Internal components in stainless steel
- Scraper blade in stainless steel 1.4310
- EPDM, FKM/Viton or PTFE seal configurations available depending on application
Material and seal compatibility should be confirmed against the chemical composition, concentration, operating pressure and temperature of the liquid before final selection.
Compact automatic scraper-filter design
With approximately 240 cm² of reusable filtration area and an internal housing volume of only approximately 1.5 litres, the FSC-50 is the most compact motor-driven unit within the FSC self-cleaning filter range.
- DN25, DN32 and DN40 Filtra connection options
- Approximately 240 cm² wedge wire filtration surface
- Motor-driven scraper cleaning
- Outside-to-inside filtration
- Integrated solids collection section
- Compact housing with clamping-ring access
- Low internal liquid volume
- Automatic cleaning-control options
Manual, timed or differential-pressure based operation
The motor-driven scraper allows the FSC-50 cleaning cycle to be integrated into an automated filtration process.
- Manual activation of the motor-driven cleaning cycle
- Time-controlled automatic cleaning
- Automatic operation based on differential-pressure monitoring
- Manual or automated solids discharge depending on system configuration
Differential-pressure based control is useful where solids loading changes during production because cleaning can be initiated according to actual screen loading rather than only at fixed intervals.
Typical DN25–DN40 self-cleaning filter applications
- Paints and coatings
- Emulsion paints
- Printing inks
- Adhesives and resins
- Industrial oils and lubricants
- Solvents and chemical process liquids
- Cooling lubricants
- Emulsions
- Polyurethane process liquids
- Plasticizers and similar fluids
- Electrophoretic coating processes
- Process-liquid recirculation
- Protection of pumps, valves and instrumentation
Benefits of the compact motor-driven FSC-50
- Automatic mechanical scraper cleaning
- Continuous filtration during screen cleaning
- No routine disposable filter-cartridge replacement
- Reusable stainless-steel wedge wire element
- DN25, DN32 and DN40 connection options
- Operating pressure up to 16 bar
- 25–3000 µm filtration range
- Compact 1.5-litre housing volume
- Low product loss during solids discharge
- Suitable for automated industrial process filtration
How to size a DN25–DN40 self-cleaning filter
The 3.5 m³/h figure is a reference capacity rather than a guaranteed flow for every liquid. Correct sizing should consider the complete process.
- Required flow rate in m³/h
- Required DN25, DN32 or DN40 connection
- Required filtration rating in µm
- Liquid type and viscosity
- Solids concentration
- Particle size, shape and behaviour
- Operating pressure
- Operating temperature
- Chemical and seal compatibility
- Required cleaning frequency
- Manual, timed or differential-pressure control requirements
Compare the compact FSC-50 with larger self-cleaning filters
Need more than approximately 3.5 m³/h? Compare the FSC-50 with DN50, DN65, DN80 and DN100 self-cleaning filters, or compare it with the manual FSC-50M when automatic motor-driven cleaning is not required.
DN25–DN40 self-cleaning filter FAQ
What flow rate can the FSC-50 handle?
The FSC-50 has a maximum reference flow of approximately 3.5 m³/h when filtering water at approximately 100 µm. Actual flow depends on viscosity, solids loading, selected filtration rating and process conditions.
Which connection sizes are available for the FSC-50?
Filtra International offers the FSC-50 with DN25, DN32 and DN40 connection-size options. The appropriate connection should be selected together with the required hydraulic capacity and process conditions.
What micron ratings are available?
The reusable wedge wire element is available from approximately 25 to 3000 µm, including common ratings such as 25, 50, 100, 250, 500, 1000 and 3000 µm.
What is the filtration area of the FSC-50?
The FSC-50 provides approximately 240 cm² of reusable wedge wire filtration surface.
What pressure can the FSC-50 handle?
The standard operating pressure range is 0 to 16 bar, with a typical operating temperature range of +10 to +80 °C.
Does the FSC-50 clean automatically?
Yes. The FSC-50 uses an electric geared motor to rotate the wedge wire element against a scraper blade. The cleaning cycle can be manually activated or incorporated into timed or differential-pressure-based automatic control.
What is the difference between the FSC-50 and FSC-50M?
The FSC-50 uses motor-driven automatic scraper cleaning, whereas the FSC-50M uses a manually operated scraper mechanism. The automatic version is more suitable where frequent or automated cleaning is required.
When should I move from FSC-50 to FSC-70 DN50?
The FSC-50 has a reference capacity of approximately 3.5 m³/h, while the FSC-70 DN50 provides approximately 13 m³/h under comparable water-at-100-µm reference conditions. Actual selection should also consider viscosity, solids loading, filtration rating and pressure drop.
Is the FSC-50 manufactured in the EU?
Yes. The FSC-50 is manufactured in the European Union and is manufactured in accordance with PED 2014/68/EU Article 4(3).