Bag Filter Housings | Industrial & Hygienic

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:

• Industrial Bag Filter Housings
• Hygienic Bag Filter Housings
• Plastic Bag Filter Housings

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

• Water treatment: Removing sediment and particulates.
• Food and beverage: Ensuring product purity.
• Chemical processing: Filtering aggressive fluids.
• Pharmaceuticals: Maintaining sterile environments.
• Paints and coatings: Capturing overspray and contaminants.

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. 

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.

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.

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.

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.

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. 

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.

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.

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.

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.

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.