Introducing the Quick Open Series: Experience the pinnacle of engineering with our multi-bag filter housings. Designed with a state-of-the-art self-balancing V-clamp locking mechanism, this series represents a revolutionary leap in design, offering unparalleled ease with its single-handed operation. Perfectly suited for high-flow applications, this is the ultimate choice for efficiency and ease of use. Crafted for scenarios where frequent element replacements are paramount, this sophisticated system is engineered to minimize downtime. By doing so, it dramatically reduces operating costs, ensuring a seamless and uninterrupted batch processing journey. Enjoy the perfect blend of efficiency and cost-effectiveness.
Safety and efficiency are redefined with our fully interlocked pressure release mechanism, offering peace of mind in every situation. The robust, corrosion-resistant V-clamp construction, paired with a proprietary screw-drive mechanism, guarantees years of steadfast service, solidifying its place as an indispensable tool for users.
Customize your filtration experience with our range of precise and durable filter-bag materials, each tailored to meet specific needs:
PP (Polypropylene): Rated 1-200µm, this versatile material withstands temperatures up to 70°C, making it adaptable across numerous settings and applications.
PE (Polyester): With a robust range of 1-200µm, this material can endure temperatures up to 120°C, making it ideal for more rigorous and demanding applications.
Nylon: Boasting an impressive range of 25-800µm and a high-temperature tolerance up to 150°C, this material is perfect for challenging and strenuous environments.
Discover the cutting-edge capabilities of our Stainless Steel Multi-bag Filter Machine, crafted for excellence and precision. Explore our Filter-Bag Numbers along with their Detailed Specifications: 1#: Dimensions are 180mmD x 410mmL; 2#: Measures at 180mmD x 810mmL; 3#: Sized at 102mmD x 210mmL; 4#: With dimensions of 102mmD x 380mmL, we offer a diverse array of options tailored to meet a variety of filtration needs.
The multi bag filter system is a marvel of innovative engineering, designed to optimize the filtration process with exceptional precision. Featuring a strategically placed inlet below the filter bags, the system allows the filter medium to enter smoothly, rising to the upper chamber of the housing. From there, it embarks on a meticulously orchestrated descent, flawlessly traversing through the filter bags. This sophisticated method ensures that impurities are effectively captured, allowing only the purest filtrate to exit with grace and efficiency. Experience the epitome of clean filtration with our cutting-edge design.
To maintain peak filtration efficiency, diligent monitoring of the filter bags is essential. As impurities accumulate, forming dense filter cakes and causing a differential pressure of 0.14-0.17 MPa, it becomes evident that bag replacement is necessary. During this critical maintenance phase, ensure that the system is properly shut down, the pressure relief valve is opened, and the filter cover is removed with care. After installing new bags, the system can resume operation seamlessly. Notably, our filter bags offer the added advantage of being cleaned and reused, promoting sustainability. However, they should be replaced when significantly damaged to guarantee continuous performance and reliability. This maintenance cycle is key to both efficiency and longevity in your filtration processes.
Exquisite Details of Multi-bag Filter Housing



FACTORY DISPLAY
mm |
3 bags |
4 bags |
6 bags |
8 bags |
mm |
12 bags |
17 bags |
23 bags |
A |
1420 |
1342 |
1495 |
1468 |
A |
1612 |
1640 |
1700 |
B |
400 |
450 |
520 |
600 |
B |
680 |
750 |
820 |
C |
520 |
527 |
450 |
528 |
C |
528 |
450 |
535 |
D |
250 |
225 |
300 |
200 |
D |
220 |
250 |
250 |
E |
500 |
550 |
600 |
750 |
E |
950 |
1050 |
1200 |
F |
1806 |
1781 |
1917 |
2029 |
F |
2256 |
2421 |
2586 |
G |
475 |
525 |
580 |
735 |
G |
930 |
1040 |
1195 |
N1 |
DN80 |
DN100 |
DN150 |
DN150 |
N1 |
DN200 |
DN250 |
DN250 |
N2 |
DN80 |
DN100 |
DN150 |
DN150 |
N2 |
DN200 |
DN250 |
DN250 |
H |
φ18 |
φ18 |
φ18 |
φ18 |
H |
φ24 |
φ24 |
φ24 |
1. BOLT FASTENING - UNWAVERING PRESSURE RESISTANCE
Our multi-bag filter system boasts a cutting-edge quick-opening flange ring secured by bolt fastening, offering unparalleled pressure resistance. The integrated booster spring mechanism ensures that operations are smooth and effortless, making it ideal for frequent filter bag changes. This design drastically minimizes downtime, vastly amplifying productivity while reducing worker strain and elevating overall operational efficiency.
2. REVOLUTIONARY SPRING-BALANCE MECHANISM
This ingenious spring-balance mechanism permits seamless, labor-efficient operation of the upper cover, adjustable from 0 to 105° as required. This robust yet straightforward support structure, paired with a compact clamshell design, eliminates liquid spillage when the lid is opened, thereby optimizing space utilization.
3. ESSENTIAL CORE OF THE BAG FILTER SYSTEM
Our state-of-the-art compression spring pressure piece achieves a perfect 360° seal with the filter bag, preventing any side leakage. The reinforced filter bag, engineered to support the heavy-duty flower plate, withstands greater pressure and reduces pressure loss, enhancing filtration performance. We provide versatile customization options, allowing for a range of customer flow configurations from 2 to 24 bags, tailored precisely to your needs.
Effortless filter bag changes with a spring locking device
Basket gasket ensures complete leakage prevention
4. CUSTOMIZABLE INLET AND OUTLET DIRECTION
We provide customizable options for the inlet and outlet directions to perfectly match your installation requirements and usage preferences. The flange diameter is also adjustable, ranging from DN25 to DN250, ensuring seamless integration with your system.
Our expertly engineered bag filters are masterfully crafted to efficiently extract trace fine impurities from liquids. These filters are indispensable across a multitude of industries, offering unmatched precision and reliability.
- Refined Chemicals Sector. Paint and Ink Filtration Excellence.
- Oil & Gas Sector Innovations. Reliable solutions for produced water filtration, and well injection water purification.
- Food & Beverage Industry Solutions. Expert filtration for beer and wine production, juice concentrate clarification, and the pristine processing of soft drinks and bottled water.
- Automotive Manufacturing Precision. Enhanced automotive spray coating pretreatment, electrophoretic paint processing, as well as finish and primer filtration. Also, impeccable filtration for parts cleaning fluids.
- Pulp & Paper Industry Applications. Advanced coating filtration solutions.
- Machining Industry Efficiency. Superior filtration for machine tool coolant circulation, cleaning fluids, as well as hydraulic and lubricating oils.



Hebei SLOT Filter Technology Co., LtdHebei SLOT Filter Technology Co., Ltd. stands as a beacon of innovation and expertise in the dynamic field of industrial precision filtration and self-cleaning filtration solutions. With an impressive legacy spanning over a decade, our company demonstrates unmatched skill in design and R&D. Leveraging avant-garde filtration technology, we offer a rich array of premium product resources, delivering comprehensive, turnkey filtration solutions to satisfy the varied demands of our distinguished clientele.
SLOT proudly upholds the prestigious ISO9001 quality management system certification and has earned recognition from SGS, highlighting our steadfast commitment to excellence. We meticulously adhere to both international standards and specific industry regulations, customizing our product designs and manufacturing processes to meet unique client specifications. Our passion lies in creating filtration equipment and components that exemplify outstanding performance and superior quality.
Our SLOT automatic self-cleaning filter systems are the preferred choice across a multitude of industries, including petrochemicals, fine chemicals, energy and power sectors, water treatment, automotive manufacturing, food and beverage, and metal processing. We have established strong and enduring partnerships with a variety of esteemed industrial enterprises both nationally and internationally.
Renowned for our exceptional product filter performance, cutting-edge manufacturing capabilities, and dedicated professional services, SLOT is synonymous with excellence. For those in pursuit of superior filter system performance, uncompromised quality, and exceptional service, SLOT stands ready as your trusted partner for the long term.

Quality Management
FAQ
1. Who are we?
Founded in 2014 in Hebei, China, we are Hebei Slot Filter Technology Co., Ltd., a trailblazer in cutting-edge solutions, propelling our innovative products to North America (40%), Western Europe (30%), South Asia (10%),
Africa (10%), and the Middle East (10%). Our agile team, comprising 11 to 50 talented professionals, is passionately committed to excellence.
2. How can we guarantee quality?
We pledge unwavering quality by supplying a pre-production sample to validate standards before commencing full-scale production.
Rigorous final inspections are meticulously conducted prior to every shipment, ensuring impeccable quality and consistency.
3. What can you buy from us?
Explore our extensive range of finely engineered products including the precision Johnson Screen, ultra-durable Bridge Slotted Well Screens, and Sand Control Well Screens, complemented by GravelPre-pack Screen, cutting-edge Pipe-based screens, resilient Perforated Pipes, and premium API/5CT Casing and Tubing.
4. Why should you buy from us, not from other suppliers?
1. We provide all-encompassing OEM & ODM solutions, customizing products to meet your unique requirements.
2. Our adept team aids in the bespoke design and development of custom drawings, actualizing your ideas.
3. Empowered by our innovative R&D team, we are at the forefront of delivering pioneering solutions.
5. What services can we provide?
We offer adaptable delivery options such as: FOB, CFR, CIF, EXW, FAS, CIP, FCA, CPT, DEQ, DDP, DDU, Express Delivery, DAF, DES;
We accept an array of payment currencies including USD, EUR, JPY, CAD, AUD, HKD, GBP, CNY, CHF;
For your convenience, we support a variety of payment methods: T/T, L/C, D/P D/A, MoneyGram, Credit Card, PayPal, Western Union, Cash, Escrow;
Communicate with us seamlessly in a multitude of languages: English, Chinese, Spanish, Japanese, Portuguese, German, Arabic, French, Russian, Korean, Hindi, and Italian.
Eager to become our local market agent? Contact us, and together we'll discover thrilling opportunities.