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Bag Filter Housings | Industrial & Hygienic

A range of housings for all applications where bag filtration is preferred

Our Industrial range of stainless steel bag filter housings are designed for industrial or prefiltation applications. The housing design is not intended for sterile filter applications. Our range covers liquid flow rates from 1 to 200 m3/hr and duplexing or triplex-ing of housings is possible to extend flow rate range. All filter housings comply fully with EU pressure equipment directive 2014/68/EU. Our bag filter housings accept all standard sized bag filter - Size 1, 2, 3, 4 and available in 4″ and 7″ ring size.

Our housings are available in a variety of materials, including stainless steel, and polypropylene, with standard connections like BSP, PN16 flanges, Triclamp, and DIN1851. Designed for reliability and ease of use, our filter housings ensure optimal performance, durability, and compliance with EU pressure equipment directive 2014/68/EU. Custom options for materials, connections, pressure, and temperature are also available.

     Industrial Bag Filter Housings

industrial-bag-filter-housing

    Single or muilti bag filter st.st. housing range for any industrial liquid applications. Flows between 1 to 60 m3/hr and pressure rated to 10 bar.

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     Hygienic Bag Filter Housings

pvbh-hygienic-bag-filter-range

Hygienic 316 stainless steel housing range for product contact in food & beverage, with Ra<0.8-micron internal surface finish.

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     Plastic Bag Filter Housings

Plastic Bag Filter Housing

We offer a range of high-quality single bag filter plastic housings - light weight, corrosion resistant polypropylene or PVDF.

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Frequently Asked Questions

What is a bag filter housing and how does it function?

A bag filter housing is a vessel designed to hold a filter bag, facilitating the removal of contaminants from liquids.

They are made in single bag configuration for all standard sizes (3,4,1,2) and in multi round for size 2 bags. Housings can be duplexed, for duty/standby operation and or skid mounted.

View our range of Bag Filter Housings:

What are the common applications for bag filter housings?

Bag filter housings offer versatility and are used across various industries, including:

How do I select the appropriate bag filter housing for my application?

Consider the following factors:

  • Flow rate requirements: Determine the size of bag filter required.
  • Operating pressure and temperature: Housings can be rated to different pressures and temperatures. As these increase so does the bag filter housing cost.
  • Chemical compatibility: Select materials resistant to the process fluid. Standard options available are stainless steel and polypropylene.
  • Regulatory compliance: It is good practice that all bag filter housings are CE marked, but they also need to conform to one of the common standards - PED, ASME or ATEX in critical application.

Read our Blog: Choosing the Right Bag Filter for your Application. 

What are the standard sizes of bag filter housings?

Standard sizes are typically:

  • Size 1: 7" diameter x 16" length.
  • Size 2: 7" diameter x 32" length.
  • Size 3: 4” diameter x 8” length
  • Size 4: 4” diameter x 14” length

These sizes accommodate various flow rates and filtration requirements.

How often should filter bags be replaced?

Replacement frequency depends on factors such as:

  • Contaminant load: Higher loads require more frequent changes.
  • Operating conditions: Pressure and temperature can affect bag lifespan.
  • Pressure drop: Monitor for increases indicating clogging.
Regular monitoring ensures optimal performance and prevents system issues, but in general bag filter should be changed once the differential pressure pressure across them reaches 1.5 Bar (22 psi)

 

Can bag filter housings handle high-pressure applications?

Yes, certain models are designed for high-pressure operations up to 16 bar (235 psi) or 20 bar (294 psi). Standard maximum operating pressures are 8 bar (118 psi) or 10 bar (147 psi).

It's essential to select a housing rated for your system's maximum pressure to ensure safety and efficiency.

Are there multi-bag filter housings available?

Multi-bag housings accommodate multiple filter bags simultaneously, allowing for higher flow rates and extended operation between bag changes. Typically the maximum number of bags in a single housing is 20 to 25.

What types of filter bags are compatible with these housings?

Filter bags come in various materials and micron ratings, including:

  • Polypropylene: Chemical resistance and cost-effective.
  • Polyester: High-temperature tolerance.
  • Nylon: Durability and strength.

Micron ratings range from 1 to 200 microns, depending on filtration needs.

For greater capacity: Needlefelt Filter Bags. For greater precision: Mesh Filter Bags. 

You can also read out blog: Bag Filtration: Needlefelt, Mesh or Other Materials. 

How do I maintain a bag filter housing?

Regular maintenance includes:

  • Inspecting seals and gaskets: Ensure integrity to prevent leaks.
  • Cleaning the housing: Remove any residual contaminants.
  • Monitoring pressure differentials: Identify when filter bags need replacement.

Proper maintenance extends the lifespan and efficiency of the system.

What are the advantages of using bag filter housings?

Benefits include:

  • Cost-effectiveness: Lower initial and operating costs.
  • Ease of use: Simple installation and maintenance.
  • Versatility: Suitable for a wide range of applications.
  • High flow rates: Efficient processing of large volumes.
Are there options for sanitary or hygienic applications?

Hygienic bag filter housings are available, featuring:

  • Smooth finishes: Prevent bacterial growth.
  • Tri-clamp connections: Facilitate easy cleaning.
  • Compliance with standards: Meet FDA or 3-A sanitary requirements.

However typically they are designed only to take a single bag.

How do I determine the correct micron rating for my application?

Consider the size of particles to be removed and the desired clarity of the filtered liquid. Common micron ratings include:

  • 1-5 microns: Fine filtration.
  • 10-50 microns: Medium filtration.
  • 100-200 microns: Coarse filtration.
What is the typical flow rate for bag filter housings?

Flow rates vary based on housing size and system pressure. For example:

  • Size 1: Up to 90 GPM ( 20 m3/hr) 
  • Size 2: Up to 180 GPM (40 m3/hr)
  • SIze 3: Up to 40 GPM (9.5 m3/hr)
  • Size 4: Up to 80 GPM (19 m3/hr)

Always consult manufacturer specifications for accurate flow rates.

Explore Related Articles

Bag Filtration: Needlefelts, Monofilament Meshes & OthersUntitled (1250 x 1080 px)

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Watch our video on Bag Filters: Your Questions Answered HERE. 

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