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What is a bag filter housing?
A bag filter housing is a pressurised filter vessel that uses a replaceable filter bag as the filter element. As the liquid passes through the filter bag, particles are retained while the filtered liquid continues through the system. This solution is well suited for applications requiring:
- High flow capacity
- Easy filter replacement
- Flexible filtration ratings
- Low operating costs
- Reliable particle removal
Bag filter housings are available as single-bag units or multi-bag systems with multiple filter bags for applications requiring high flow rates.
Choose the right connections
Selecting the correct connection type simplifies installation and reduces the need for modifications to existing piping systems.
- Flanged connections
- BSP threaded connections
- NPT threaded connections
- Hygienic connections
- Quick-connect couplings
How to choose the right bag filter housing for process and industrial applications
Bag filter housings are a flexible filtration solution for industrial and process applications where liquids need to be cleaned of particles before continuing through the system. With the right choice of material, connection type, filter bag and sizing, a bag filter housing can be tailored for applications ranging from water treatment and aquaculture to the chemical industry, food and beverage production, marine and offshore.
Quick Summary
- Bag filter housings provide efficient particle filtration across a wide range of industrial processes..
- The solution can be customised with different materials, filter bags and connection types to suit specific application requirements.
- Correct sizing helps ensure reliable operation, reduced maintenance and extended equipment service life.
Material selection is critical
The material of the filter housing should be selected based on both the process fluid and the operating conditions.
304 stainless steel: Suitable for standard industrial processes with moderate corrosion resistance requirements.
316L stainless steel: The most common choice for food & beverage, chemical processing, marine environments and industrial process applications where corrosion resistance is essential.
Polypropylene and polyethylene: Used for aggressive chemicals and certain corrosive process fluids.
Carbon steel: A cost-effective option for non-corrosive media.
Duplex and Super Duplex stainless steel: Preferred for demanding seawater applications and highly corrosive environments.
Titanium: Used in particularly aggressive chemical processes where maximum corrosion resistance is required.
Learn more about material selection for bag filter housings -->
Delivery time
The standard lead time for custom-configured bag filter housings is typically 4–6 weeks.
Ditech also stocks a range of common sizes and models, allowing many solutions to be delivered significantly faster when required. This supports Ditech's commitment to high delivery reliability and product availability.
Multiple configurations provide greater flexibility
Bag filter housings are available with a variety of inlet and outlet configurations to ensure seamless integration with existing piping systems.
Common configurations include:
- Side inlet with bottom outlet
- Inline configuration
- Top inlet
- Inlet and outlet at the same elevation
- Opposite-side connections
These options make it easier to optimise both space utilisation and maintenance accessibility.
View all our bag filter housing configurations-->
Accessories that enhance filtration performance
A bag filter housing can be equipped with a range of accessories to improve both filtration efficiency and system performance.
Magnetic insert: Removes ferrous particles such as iron and steel before they reach downstream process equipment.
Support basket: Supports the filter bag and prevents deformation under high differential pressure.
High Flow solutions: Significantly increase the effective filtration area, providing higher flow capacity without requiring a larger filter housing.
Instrumentation: Pressure gauges and differential pressure gauges make it easy to monitor filter condition and schedule filter bag replacement.
Heating and cooling jackets: Used where the process fluid must be maintained at a specific temperature.
Filtration rating and flow capacity: The filter housing determines the system's flow capacity, while the filter bag determines the filtration rating.
A pressure vessel that holds a filter bag to remove particles from liquids in industrial processes.
The right solution depends on the required flow rate, process fluid, filtration rating and installation requirements.
Yes. Bag filter housings can be customised to meet both the technical and physical requirements of existing installations.
Bag filter housings are widely used in industrial manufacturing, aquaculture, marine, oil and gas, food & beverage, and chemical processing.
FAQ
Need help choosing the right solution?
Contact us for technical advice or a recommendation based on your specific application. We can help you select or customise a solution that delivers reliable operation and optimal filtration performance.