In many industrial filtration systems, a simple, durable, and cost-effective filter vessel is often the best choice. When the flow rate is moderate and the contaminant load is manageable, a single bag filter housing provides an efficient way to remove particles, sediment, fibers, rust, gels, and suspended solids from liquids.
A single bag filter housing is widely used in water treatment, chemical processing, food and beverage production, paint and coating filtration, oil processing, wastewater treatment, electronics manufacturing, and general industrial liquid filtration. It offers easy operation, flexible micron rating, economical filter bag replacement, and reliable protection for pumps, valves, nozzles, heat exchangers, membranes, and downstream process equipment.
Macrokun supplies industrial single bag filter housing solutions designed for practical field use. Our housings can be customized according to liquid type, flow rate, operating pressure, temperature, material, inlet and outlet size, seal material, filter bag size, and installation requirements.
Whether you need a stainless steel single bag filter housing for process water or a customized unit for chemical liquid filtration, Macrokun can help provide a suitable solution for your industrial filtration system.
A single bag filter housing is a pressure vessel designed to hold one filter bag inside a support basket. During operation, unfiltered liquid enters the housing, flows into the filter bag, passes through the bag media, and exits through the outlet after solid particles are captured.
The filter bag performs the actual filtration, while the housing provides mechanical strength, pressure resistance, liquid containment, sealing, and support. The internal basket prevents the filter bag from collapsing or stretching under differential pressure.
A typical single bag filter housing includes:
Because the filter bag can be replaced with different micron ratings and materials, one housing can be used for many filtration tasks. This flexibility is one reason single bag filter housings remain popular in industrial filtration.
The working principle is straightforward. Liquid enters the filter housing through the inlet connection and is directed into the filter bag. As the liquid passes through the bag media, particles larger than the selected micron rating are trapped inside the bag. The filtered liquid then flows through the support basket and exits through the outlet.
Most single bag housings use inside-to-outside flow. This means contaminants remain inside the bag, making removal cleaner and easier during replacement. When the pressure drop increases to a set limit, the operator opens the housing, removes the used filter bag, installs a new one, checks the seal, and returns the system to service.
This simple structure makes bag filtration easy to operate and maintain. It is especially useful where frequent filter changes, flexible micron rating, and low replacement cost are important.
A single bag filter housing is one of the most economical liquid filtration solutions for industrial users. Compared with more complex automatic filters or multi-cartridge systems, it has fewer components and lower maintenance requirements.
The filter bag is easy to replace, and the housing can be reused for many years when properly selected and maintained. This helps reduce total filtration cost, especially for pre-filtration and general particle removal applications.
Single bag filter housings are ideal for applications where the flow rate does not require a multi-bag system. Their compact footprint makes them suitable for process lines, skid-mounted systems, pilot plants, batch production, equipment protection, and point-of-use filtration.
For facilities with limited installation space, a single bag housing provides reliable filtration without taking up excessive room.
The filtration accuracy depends on the filter bag installed inside the housing. By changing the filter bag, users can adjust the filtration performance according to process needs.
Common filtration goals include:
Filter bags are available in different materials and micron ratings, allowing the same housing to serve multiple applications.
Maintenance convenience is one of the biggest advantages of a single bag filter housing. Operators can open the housing, remove the used bag, install a new bag, and restart the system quickly.
Macrokun can provide practical closure designs such as clamp closure, swing bolt closure, or customized quick-opening structures. Proper venting and draining also make maintenance safer and cleaner.
Bypass can reduce filtration quality if liquid flows around the bag instead of through it. Macrokun single bag filter housings are designed with secure basket support and dependable sealing structures to help reduce bypass risk.
A good seal helps ensure stable filtration performance and better downstream protection.
Different industries require different housing materials. Macrokun can supply single bag filter housings in stainless steel, carbon steel, or customized materials based on the application.
Common material choices include:
Stainless steel is widely used for water treatment, chemical processing, food and beverage, and clean process liquids. Carbon steel may be suitable for some general industrial water systems where corrosion resistance is less critical.
The following table shows common specification options for Macrokun single bag filter housings. Final specifications can be customized according to working conditions.
| Item | Common Options |
|---|---|
| Product Name | Single Bag Filter Housing |
| Brand | Macrokun |
| Housing Type | Single-bag liquid filter vessel |
| Filter Bag Quantity | 1 bag |
| Filter Bag Size | Size #1, Size #2 or customized |
| Housing Material | SS304, SS316, SS316L, carbon steel, customized |
| Basket Material | Stainless steel or customized |
| Micron Rating | Determined by filter bag, commonly 1–2000 microns |
| Inlet/Outlet Connection | Flange, thread, clamp, or customized |
| Closure Type | Clamp, swing bolt, quick open, customized |
| Seal Material | EPDM, NBR, silicone, PTFE, Viton optional |
| Operating Pressure | Customized according to system design |
| Operating Temperature | Based on material and seal selection |
| Surface Treatment | Polished, sandblasted, painted, passivated, customized |
| Installation | Vertical structure, skid-mounted option available |
| Application | Water, chemical, food, coating, oil, wastewater, process liquid |
| Custom Service | Available |
Single bag filter housing is widely used for industrial water filtration. It can remove sediment, rust, sand, suspended solids, and other particles from process water, cooling water, circulating water, and utility water.
It is often used before pumps, valves, heat exchangers, RO systems, cartridge filters, or other downstream equipment.
In chemical production, liquids may contain solid impurities, fibers, gels, catalyst residues, or reaction by-products. A single bag filter housing can help improve liquid clarity and protect process equipment.
For chemical applications, housing material and seal material should be selected carefully. SS316 or SS316L may be recommended for better corrosion resistance, depending on the liquid composition.
Paints, coatings, resins, and inks often need filtration before filling, spraying, or further processing. A single bag filter housing can remove gels, agglomerates, skin particles, and other contaminants that may affect product quality.
Because filter bags are easy to replace, bag filtration is often practical for batch production and product changeovers.
Stainless steel single bag filter housings can be used for ingredient water, process water, edible liquids, syrups, beverages, and general pre-filtration.
For food and beverage applications, stainless steel construction, suitable seals, and smooth internal surfaces are usually preferred.
Single bag filter housings can be used to remove particles from oils, lubricants, hydraulic fluids, and process liquids. They help protect machinery, improve fluid cleanliness, and reduce equipment wear.
In wastewater systems, single bag filter housing can be used as a pre-filter to remove larger particles before finer treatment stages. It is suitable for small to medium flow lines, pilot systems, and side-stream filtration.
Electronics manufacturing often requires stable pre-filtration for process water and chemical liquids. A single bag filter housing can help remove visible particles before finer filtration stages.
| Item | Single Bag Filter Housing | Multi Bag Filter Housing |
|---|---|---|
| Filter Bag Quantity | 1 bag | Multiple bags |
| Flow Capacity | Low to medium | High |
| Footprint | Compact | Larger but efficient for high flow |
| Initial Cost | Lower | Higher |
| Maintenance | Simple and quick | More bags to replace |
| Best Use | Small to medium flow systems | High-flow industrial systems |
| Installation | Easy | More project-based |
| Dirt-Holding Capacity | Moderate | Higher |
A single bag filter housing is ideal for moderate flow rates and smaller systems. A multi bag filter housing is better when the flow rate is high or the contaminant load requires more filtration area.
| Item | Single Bag Filter Housing | Cartridge Filter Housing |
|---|---|---|
| Filter Element | Filter bag | Filter cartridge |
| Best For | Coarse to medium particle removal | Fine filtration and polishing |
| Replacement Cost | Usually lower | Often higher |
| Dirt-Holding Capacity | Good for larger particles | Depends on cartridge design |
| Filtration Accuracy | Flexible, but less precise than many cartridges | More precise options available |
| Maintenance | Easy bag replacement | Cartridge change-out may take longer |
| Common Use | Water, chemical, coating, wastewater | RO protection, final filtration, high-purity liquid |
Bag filtration is often selected for economical pre-filtration and larger particle removal. Cartridge filtration is better when finer filtration accuracy and more consistent particle retention are required.
In many industrial systems, both are used together. A single bag filter housing may be installed first to remove larger solids, followed by cartridge filters for finer polishing.
| Item | Single Bag Filter Housing | Basket Strainer |
|---|---|---|
| Filtration Media | Replaceable filter bag | Metal basket or screen |
| Micron Range | Wide range | Usually coarse |
| Particle Capture | Better for smaller particles | Better for large debris |
| Maintenance | Replace filter bag | Clean basket |
| Filtration Flexibility | High | Limited |
| Typical Use | Liquid filtration | Pump and pipeline protection |
Basket strainers are useful for removing large debris and protecting equipment. However, when the process requires flexible micron rating and better particle capture, a single bag filter housing is usually more effective.
The housing must be sized according to the system flow rate. If the housing is too small, pressure drop will rise quickly and bags will need frequent replacement.
Different liquids require different materials. Water, chemical liquids, oils, coatings, and food-grade liquids all have different compatibility requirements.
The micron rating depends on the filter bag. Coarse filtration may use higher micron ratings, while fine pre-filtration requires lower micron ratings. The correct choice depends on downstream equipment and final liquid quality requirements.
SS304 is suitable for many general industrial applications. SS316 or SS316L offers better corrosion resistance. Carbon steel may be economical for certain water applications.
The housing and seals must match the actual operating conditions. Temperature, pressure fluctuations, and cleaning chemicals should all be considered.
Inlet and outlet connections may be flanged, threaded, clamped, or customized. The connection type should match existing piping and maintenance requirements.
Enough space should be left above and around the housing for opening the cover, removing the basket, replacing the bag, and cleaning the vessel.
Macrokun understands that industrial filtration buyers need reliable equipment, not just a standard vessel. Our single bag filter housings are designed to support stable operation, easy maintenance, and long-term use in real industrial environments.
Macrokun can customize single bag filter housing specifications according to project requirements, including:
Our housings are suitable for OEM filtration systems, water treatment equipment, chemical plants, food and beverage factories, coating production lines, wastewater systems, and industrial end users.
If you are not sure which housing material, bag size, micron rating, or connection type to choose, Macrokun can help review your process conditions and recommend a practical solution.
A single bag filter housing is used to remove particles, sediment, fibers, gels, rust, and suspended solids from industrial liquids. It is commonly used in water treatment, chemical processing, coating filtration, food and beverage production, oil filtration, and wastewater treatment.
Liquid enters the housing and flows through one filter bag. Particles are captured inside the bag, while filtered liquid exits through the outlet.
Size #1 and size #2 filter bags are commonly used in industrial single bag filter housings. The best size depends on flow rate, contaminant load, and installation space.
Yes. Macrokun can customize material, connection size, closure type, pressure rating, seal material, surface finish, and other specifications according to your project.
Stainless steel provides better corrosion resistance and is suitable for many water, chemical, food, and process liquid applications. Carbon steel may be more economical for certain industrial water systems.
If your flow rate is high or your filter bags need replacement too frequently, a multi bag filter housing may be more suitable because it provides larger filtration area and higher dirt-holding capacity.
If you need a reliable single bag filter housing for industrial liquid filtration, Macrokun can provide a solution based on your working conditions.
Please send us your project details, including:
Contact Macrokun today to get a customized single bag filter housing solution for your industrial filtration system.
Pre: How to Choose the Right Single Bag Filter Housing for Industrial Filtration
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