Advantages of FiltEdge's Liquid Bag Filter Housing
Every filter is 100% factory tested for 30 minutes at 1.5 times water pressure.
Dual step to prevent side leakage and patented 3-point locking design to prevent leakage
Support ISO/CE/FDA and other international certification standards, ASTM can be customized.
What is Liquid Bag Filter Housing?
FiltEdge’s liquid bag filter housing is a pressurized device that relies on the filter bag to achieve filtration, and is the core of the entire filtration system. A single filter can hold 1-32 bags and provide you with up to 5000+ GPM of filtration flow. It can also expand the flow rate by connecting in parallel mode to provide you with non-stop operation.
According to your filtration process needs, liquid bag filter housing can be used as pre-filtration for ultrapure water and terminal filtration for all kinds of industrial water. It can be widely used in petrochemical, fine chemical, food and beverage, pharmaceutical, automotive paint, chips and other manufacturing processes.
Types of Liquid Bag Filter Housing
FiltEdge’s liquid bag filter housing has more than 200 styles, you can choose according to the flow rate, pressure, and the nature of the liquid. Or you can provide your working condition information, we will help you to do working condition analysis and filter selection.
1 bag filter housing is of compact structure, with top-entry type and side-entry type, mainly for small and medium flow rate liquid filtration.
The classic 2/4/6 bag filter housing can be used for up to 32 bags of large flow rate filters, equipped with boom arm and quick-open structure, shortening your downtime for bag changing.
Dual filter housing is in the mode of “one use and one backup”, which can realize 24 hours non-stop, making production safer and more efficient.
Features of Liquid Bag Filter Housing
FiltEdge selects high quality materials and mature technology to manufacture a high performance liquid bag filter housing to keep your production line running stably.
Covering from 1-200μm, suitable for different liquids.
SS316, SS304, carbon steel, Hastelloy, PVDF, PP and other materials for different liquids.
0.6-1.0MPa is suitable for most common working conditions, and 2.5MPa high-pressure models can be customized.
Various inlet and outlet directions, such as same side, opposite side, bottom outlet, etc., to match your pipeline.
Zero Side Leakage Liquid Bag Filter Housing
FiltEdge’s precision machined filter bag locator with three-point locking mechanism and double step design completely solves the side leakage and backwash problems, ensures filtration accuracy, and protects the quality of your products.
Quick-open Liquid Bag Filter Housing
The quick-open structure of liquid bag filter housing allows you to be operated by one person, and the heavy lid can be opened in as fast as 15 seconds, which saves a lot of time for your maintenance and replacement of the filter bag. Compared to conventional filters, the quick-opening liquid bag filter housing saves an average of about 1 hour per bag change, and the larger the filter, the more time and effort it saves, reducing your downtime.
Long Life Liquid Bag Filter Housing
Our Liquid Bag Filter Housing is based on the nature of your liquid to choose the housing material (stainless steel, carbon steel, alloy, plastic), sealing material (EPDM, Viton, PTFE, FFKM, Silicone), and processing technology. We must do 1.5 times water pressure test and weld PT test to ensure that they can withstand the corrosion and pressure of your liquid, will not be easily rusted through, deformation, service life of up to 15 years.
Customized Liquid Bag Filter Housing
As a filter housing factory, FiltEdge can customize liquid bag filter housing for you, including stainless steel and plastic bag filter housing for strong acid and alkali; jacketed filter housing for high viscosity and easy to solidify liquid; and chemical filter housing specially designed for chemical industry. FiltEdge’s chemical filter housings are not only customized for different liquid chemical properties, pressures, temperatures and other conditions to improve filtration efficiency and quality, but also can be OEM/ODM customized for you to develop your own brand.
Why Choose FiltEdge's Liquid Bag Filter Housing?
FiltEdge is the supplier of liquid bag filter housing, which can provide you with one-stop purchasing service for filters and spare parts, as well as providing filtration system solutions.
Filters and accessories available in US warehouse and China factory can be shipped to you within 24 hours, and customized filters can be shipped to you within 7 days from design to shipment.
Before sale, we will provide you with sample testing and analysis, product selection analysis, customized design, 3D drawings, clear quotations, and compliance documents.
After sale, we will provide 24-hour remote technical support, as well as on-site installation and maintenance by our technicians.
Applications of Liquid Bag Filter Housing
The precision of Liquid bag filter housing is in the range of 1-200μm, covering fine filtration, medium filtration and coarse filtration, depending on the filtration effect you want, it can be used as pre-filtration in the filtration system, terminal filtration, or used together. The following are the most common scenarios in which liquid bag filter housing is used:
Industrial wastewater purification, RO pre-filtration, water reuse.
Solvents, resins, strong acid and alkali chemicals filtration.
Hygienic clean fluids such as syrup, juice, edible oil, etc.
Electrophoretic paint, automotive top coat, paint line, coolant filtration
Technical Parameters of Liquid Bag Filter Housing
Below are the general technical parameters of our liquid bag filter housing for your reference.
If there is no suitable filter, you can contact us for customization.
- Technical Parameters of Liquid Bag Filter Housing
| Item | Specifications & Options | Engineering Highlights & Advantages |
| Number of Filter Bags | • Single-Bag: 1S / 2S / 3S / 4S models
• Multi-Bag: 2, 3, 4, 5, 6, 8, 12, 17, 23, up to 32 bags per vessel | Complete coverage from low-flow laboratory testings to ultra-high-flow industrial operations. |
| Flow Capacity | 20 m³/h to 1,200+ m³/h
(175 GPM to 5,600+ GPM) | Actual flow rate depends on the bag quantity, micron rating, and fluid viscosity. |
| Filter Bag Sizes | International Standard / FSI Standard:
Size #01 (7″ × 16″) / Size #02 (7″ × 32″) / Size #04 | Fully compatible with global consumable brands. Single-bag models offer ring-free quick-change structures. |
| Filtration Rating | 1 μm to 1,000 μm
(Common options: 1 / 5 / 10 / 25 / 50 / 100 μm) | High-efficiency interception of fine particles, debris, and suspended solids from liquids. |
| Materials Available | SS304 / SS316L / Heavy-duty Carbon Steel (Q235) / PP / PVDF | Built with premium ASTM-standard steels. Full raw material traceability and mill test certificates are available. |
| Lid Opening Methods | • Quick-opening: V-clamp / Swing-bolt with davit arm / Gravity-assisted single-finger operation (≤15s bag change)
• Rocker-Arm Assisted Cover
• Spring-balanced Eyebolt Mechanism
• Economic Concave Casting Cover | Flexible configurations based on your bag replacement frequency and budget to minimize maintenance downtime. |
| Design Pressure | 0.6 MPa to 1.6 MPa (6 bar to 16 bar)
(High-pressure customization available up to 2.5 MPa / 25 bar) | 100% hydrostatically tested at 1.25–1.5x design pressure before shipment. All welds undergo strict inspection for maximum safety. |
| Operating Temperature | • Metal Housings: -20°C to 120°C (Standard EPDM seal); up to 150°C (Optional PTFE / Viton)
• Plastic Housings: PP ≤ 70°C / PVDF ≤ 90°C | Perfectly adapted to various working conditions, from low-temperature solvents to high-temperature industrial thermal fluids. |
| Sealing System | Patented multi-sealing ring design / High-quality O-ring elastomer sealing | Combined with three-point/self-pressing heavy-duty hold-down devices to achieve 100% Bypass-Free Sealing. |
| Inlet & Outlet Connection | • Port Sizes: DN80 – DN300 range
• Connection types: Flanged / Threaded / Tri-clamp
• Orientation Options: Side→Bottom / Side→Side / Top→Bottom | Flexible plumbing configurations to fit your existing piping layouts, reducing on-site installation and retrofitting costs. |
| Surface Treatment | • Interior: Precision mechanical polishing or electrolytic polishing (Ra ≤ 0.8 μm to prevent scaling)
• Exterior: Industrial-grade sandblasting or mirror finish | Tailored surface finishes to meet both sanitary (food & beverage) and heavy-duty industrial requirements. |
| Design Standards | CE-PED / GB150 | Manufactured in accordance with major international pressure vessel codes, ensuring smooth local engineering approval. |
| Applicable Media | Industrial wastewater, RO pretreatment, various acidic/alkaline chemical liquids, solvents, resins, inks, cleaning solutions, food-grade fluids, high-viscosity liquids, and high-pollutant slurries. | Widely utilized in water treatment, chemical processing, automotive coating, oil & gas, food & beverage, electronics, and pharmaceuticals. |
| Customization Options | Full OEM / ODM Custom Dimensions Supported:
Custom pressure ratings, non-standard dimensions, port orientations, adjustable mounting legs, Duplex Filter Systems, and heating jackets. | Engineered to meet the strict space limitations and unique process criteria of EPC contractors and plant engineers. |
FiltEdge as a manufacturer with liquid bag filter housing factory in China, we have OEM/ODM customization capability. Whether it is inlet/outlet, flange (ANSI/DIN/JIS), shape and so on, we can deeply customize. However, it is usually not recommended to change the filter bag positioning seat, so that you will not be able to find cost-effective filter bag consumables at a later stage, unless the working condition is very special. Our MOQ for liquid bag filter housing is usually 1 unit.
This is an easy problem to solve. You can use the Duplex Filter System, which consists of two identical liquid bag filter housings connected in parallel, with one in normal use and the other as a backup. When you need to change the filter bag, you can have the two filters pause and turn on simultaneously for the purpose of pausing the main unit and using the backup unit. In this way, you will have time to change the bag and maintain the operation of the main machine, and it will not cause the trouble of production line downtime.
Yes, it will work fine. However, it is best to make a detailed solution depending on the nature of your liquid. Usually, either you increase the number of filter bags and expand the capacity of the equipment to reduce the flow rate and pressure drop; or you choose to use jacketed thermal insulation filter housing according to the nature of the liquid to reduce the viscosity of the liquid after heating it to achieve the purpose of high efficiency filtration.-
