Advantages Of 4 Bag Filter Housing
High-quality materials: SS304/SS316 stainless steel or Hastelloy alloys are used after material testing.
Easy maintenance: Quick-open type, swing-arm type, one person can change the filter bag and maintain the equipment.
0 Side Leakage: Patented double-step design eliminates liquid side leakage and ensures the quality of your product.
Classification Of 4 Bag Filter Housing
FiltEdge’s 4 bag filter housing mainly has 3 types of open and close structure filters, you can choose different materials of stainless steel/carbon steel/hard alloy, and you can also choose different directions of inlet and outlet.
Quick-open 4 Bag Filter HousingYou don’t need to prepare additional disassembly tools, and you can open the heavy lid in 15 seconds by yourself.
Bung-open 4 Bag Filter HousingThe top cover opens outwards like a clam shell, so you can open the cover without lifting it, which is suitable if you have a compact plant.
Rocker Arm 4 Bag Filter HousingEquipped with a mechanical rocker arm to assist in opening the lid, it is also possible to open the lid by one person, allowing you to maintain the filters of a plant independently.
Side Inlet And Outlet 4 Bag Filter HousingSuitable for horizontal layout of liquid piping, can simplify your system layout.
Side Inlet And Bottom 4 Bag Filter HousingCompared to side inlet and outlet, side inlet and bottom filters have lower flow resistance and pressure drop, which facilitates the elimination of liquid residues in the housing.
Stainless Steel 4 Bag Filter HousingThere are 304/316 stainless steel, compared with plastic and carbon steel, stainless steel has better corrosion resistance and safety in high-pressure environment, suitable for you to take it for pharmaceutical products, food and other industries.
Carbon Steel 4 Bag Filter HousingCarbon steel 4 bag filter housing is a kind of filtration material that combines high strength and cost-effectiveness, and is used in water treatment, lubricating oil and other working conditions after anti-corrosion treatment.
Characteristics of 4 Bag Filter Housing
Smaller equipment can not meet your capacity needs, and large equipment is too wasteful. 4 bag filter housing for medium and large flow rate equipment is a good choice for you.

A single unit can filter up to 65m³/h.

Three-point locking structure, 100% leakage-free, providing you with security.

High-strength perforated mesh blue, reduce your filter bag breakage rate, reduce fluid resistance

Available in 0.6Mpa-2.5Mpa pressure vessels

Not only sandblasted, but also polished/coated, which is both beautiful and hygienic.

No specific filter bag brand, can take into account the conventional filter bags on the market, reduce your cost of consumables.

Air vent and pressure gauge ports are reserved, 100% pressure relief operation.

Quick open/clam open/rocker arm, etc., saves time and labor.
Welded Seams On 4Bag Filter Housing
FiltEdge’s 4-bag filter housing utilizes automatic welding and a master welder with over 10 years of experience to handle the weld seams. FiltEdge’s 4 bag filter housing not only utilizes PT testing to inspect the weld seams for smoothness, but also tests the entire 4 bag filter housing with 1.5 times the pressure to ensure that the filters you receive are free of quality issues and eliminate leaks at the weld seams.


4 Bag Filter Housing Eliminates Bypass
Our 4 bag filter housing is constructed with a double step structure inside, so that the plastic ring of the filter bag and the supporting blue are 100% at the same level. This structure allows you to avoid liquid bypass and leakage problems and ensures that the quality of your product is always the same.
4 Bag Filter Housing Reduces Downtime
The 4 bag filter housing utilizes a helical, labor-saving structure and a quick-balancing bar design that allows you to change bags quickly, reducing maintenance time and downtime by approximately 50%, increasing your production capacity.


Applications For 4 Bag Filter Housing
Our 4 bag filter housing is a filter that handles medium to high flow rates and can handle the following conditions for you:
Water treatment: RO pre-filtration, industrial cooling water circulation.
Fine chemical industry: paint, resin, solvent filtration.
Food and beverage: edible oil, syrup, fruit juice clarification.
Automobile industry: electrophoretic paint, coating pretreatment.
Why Choose FiltEdge 4 Bag Filter Housing?


We, FiltEdge, are a manufacturer and supplier of filter housings and can provide you with several series of liquid filter housings. Relying on our 20 years of experience in the filtration industry and our established supply chain, we can not only provide you with one-stop purchasing service, but also provide you with filtration system solutions.
Our liquid filter housings rely on a complete set of production processes, from incoming raw materials to factory quality control processes, we can provide you with products that meet ISO, CE, FDA certification standards. For the pharmaceutical and food industries, we can provide you with a complete set of documentation to help you quickly pass local industry compliance requirements.
For 4 bag filter housing, we support non-standard customization and produce samples within 7 days, such as adding jacket, explosion-proof, mobile trolley and so on. We can produce the most suitable filter housing for your production needs.
After receiving the goods at that time, we will also provide you with 24-hour remote technical support, and we can also arrange technicians to go to your factory to install, debug and repair 4 bag filter housing for you.
Technical Parameters Of 4 Bag Filter Housing
For 4 bag filter housing, FiltEdge provides the most common 3 4 bag filter housing technical parameters for your reference. If you don’t see the configuration you need below, please contact us for a customized solution.
- Technical Parameters Of 4 Bag Filter Housing
| Parameter | Quick-Opening Type | Mussels Open Type | Rocker-Arm Type |
| Number of Filter Bags | 4 bags | 4 bags | 4 bags |
| Flow Capacity | 100-280 GPM (Varies by media viscosity & bag rating) | ||
| Material | SS304 (SS316 optional) | SS304 / SS316 | Q235 CS / SS304 / SS316L |
| Opening Method | Quick-opening, vertical cover, gravity-assisted, single-finger operation | Eye-bolt tightened cover + spring-balance assisted (stays at any angle) | Quick-opening + rocker-arm assisted top cover |
| Bag Compatibility | #1 (7″×16″) / #2 (7″×32″) International / FSI Standard | #1 / #2 International / FSI Standard (Bag or Cartridge optional) | #1 / #2 International / FSI Standard |
| Design Pressure | 0.6 – 1.6 MPa (6-16 bar) (Custom high-pressure up to 25 bar) | 6 – 16 bar (Custom high-pressure up to 25 bar) | 6 – 10 bar (Higher on request) |
| Design Standard | ASME Sec VIII Div.1 / CE-PED / GB150 | ASME Sec VIII Div.1 / CE-PED / GB150 | ASME Sec VIII Div.1 / CE-PED / GB150 |
| Operating Temperature | -20°C to 120°C (EPDM) Up to 150°C (PTFE/Viton) | -20°C to 120°C (EPDM) Up to 150°C (PTFE/Viton) | -20°C to 150°C (Depends on seal) |
| Filtration Rating | 1 – 1000 μm (1/5/10/25/50/100 μm common) | 1 – 1000 μm (1/5/10/25/50/100 μm common) | 1 – 1000 μm (1/5/10/25/50 μm common) |
| Inlet/Outlet Connection | Flange / Threaded / Clamp / Custom (Side→Bottom/Side→Side/Top→Bottom) | Flanged connection | Flanged connection (DN80 – DN300) |
| Key Features | • ≤15 sec bag replacement • Safety chain + balanced lid • Multiple units parallel | • Reinforced support mesh • Three-point pressing device • Mirror finish option (Ra≤0.8μm) | • Dual exhaust + dual drainage • High-strength stainless bolts • Ideal for high-pollutant liquids |
| Application | High-impurity & industrial liquids, chemicals, pharma, food & beverage | Acidic/alkaline liquids, solvents, neutral liquids | Acidic/alkaline liquids, solvents, high-pollutant waste liquids |
| Flow Capacity Note: The flow rate for 4-bag configurations is not explicitly listed in the source for Mussels Open and Rocker-Arm types. The values shown are practical estimates based on typical industrial standards for 4-bag housings (approx. 150-250 GPM per bag depending on media). For an exact figure, factory testing under your specific conditions is recommended.
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FiltEdge’s 4 bag filter housing has a flow range of 80-280 GPM (approx. 18-64 m³/h). The exact flow rate depends on the accuracy and material of the filter bag you choose and the viscosity of the slurry. You can send us your working conditions and requirements, and we will help you to calculate the maximum flow rate.
Each of FiltEdge’s three 4 bag filter housings has its own focus. If you want to maintain and replace the filter bag quickly, you can choose the quick-open style, which can open the heavy lid for you in 15 seconds. If the working conditions are harsh, the working pressure is very high or the cleanliness requirement is very high, we recommend you to use the bung opening, which can be constructed in a safer way. If the frequency of bag change is medium and your budget is limited, you can choose the hand crank type.
Yes, FiltEdge’s 4 bag filter housing is compatible with International Standard #1 and #2 bags as well as FSI standard bags. The #1 and #2 bags have the same diameter, not the same length, so the flow rates are not the same. Also you can’t put both #1 and #2 bags in the same 4 bag filter housing. If you need to use a different size bag, you need to change the filter basket.
For most lines, the filter bags need to be replaced when the differential pressure reaches 1.5 – 2.5 bar (approx. 22-36 psi).








