Introducing the Quick Open Series: Experience the pinnacle of cutting-edge engineering with our state-of-the-art multi-bag filter housings. These feature a revolutionary self-balancing V-clamp locking mechanism that sets a new standard in design innovation. This series is a game-changer, offering unparalleled ease with its effortless single-handed operation, tailored perfectly for high-flow applications. It represents the ultimate choice for those who demand both supreme efficiency and exceptional usability. Meticulously engineered for scenarios where frequent replacements are necessary, this sophisticated system is an engineering marvel, crafted to drastically reduce downtime. By optimizing every aspect of functionality, it dramatically cuts operating costs, ensuring a seamless and uninterrupted batch processing experience. Enjoy the perfect blend of efficiency and cost-effectiveness, keeping your operations running flawlessly.
Redefining the benchmarks of safety and efficiency, our fully interlocked pressure release mechanism delivers unwavering peace of mind in every situation. The robust and corrosion-resistant V-clamp construction, complemented by a unique screw-drive mechanism, assures years of reliable service, securing its place as an indispensable tool for discerning users.
Elevate your filtration process with our extensive selection of meticulously designed and durable filter-bag materials, each crafted to precisely meet specific needs:
PP (Polypropylene): Rated perfectly from 1-200µm, this versatile material can withstand temperatures up to 70°C, making it adaptable across a wide array of settings and applications.
PE (Polyester): This durable material offers a wide range of 1-200µm and withstands temperatures up to 120°C, ideal for the most challenging and demanding applications.
Nylon: With an impressive range of 25-800µm and a remarkable high-temperature tolerance of up to 150°C, this material is expertly tailored for the most challenging and rigorous environments.
Discover the cutting-edge potential of our Stainless Steel Multi-bag Filter Machine, a masterpiece of precision engineering and unparalleled excellence. Explore our Filter-Bag Numbers alongside 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. Our diverse selection accommodates a vast range of filtration needs, offering bespoke solutions for every requirement.
The multi bag filter system represents the pinnacle of advanced engineering, designed with meticulous craftsmanship to redefine the filtration process with exceptional precision. Featuring an ingeniously positioned inlet below the filter bags, this system seamlessly channels the filter medium upward into the housing's upper chamber. From this vantage point, the medium embarks on a precise descent, expertly traversing the filter bags. This sophisticated approach ensures impurities are expertly captured, leaving behind nothing but the purest filtrate, which exits with unmatched efficiency and elegance. Experience the zenith of pristine filtration through our cutting-edge design.
To maintain peak filtration performance, it's crucial to diligently monitor the filter bags. As impurities accumulate and form dense filter cakes, creating a differential pressure of 0.14-0.17 MPa, it becomes evident that bag replacement is necessary. During this critical maintenance phase, ensure the system is thoroughly shut down, the pressure relief valve is carefully opened, and the filter cover is gently removed. Once new bags are installed, the system is primed to resume its flawless operation. Our filter bags, crafted with sustainability in mind, can be cleaned and reused, although they should be replaced if extensively compromised to sustain consistent performance and dependability. This maintenance cycle is essential for efficiency and prolonged operational life in your filtration ventures.
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
Discover unmatched durability with our state-of-the-art multi-bag filter system, featuring a quick-opening flange ring masterfully secured by bolt fastening. This ensures unparalleled pressure resistance, bolstering confidence in its robust and steadfast performance. The integrated booster spring mechanism guarantees seamless and fluid operation, offering the ideal solution for frequent filter bag changes. Revel in significantly reduced downtime, substantial productivity enhancements, minimized worker strain, and a dramatic increase in operational efficiency, all thanks to this ingeniously designed system.
2. REVOLUTIONARY SPRING-BALANCE MECHANISM
Behold the revolutionary spring-balance mechanism ingeniously crafted for effortless and labor-efficient operation of the upper cover, smoothly adjustable between 0 to 105° as required. This sturdy yet elegant support structure, combined with a sleek clamshell design, guarantees zero liquid spillage upon lid opening, optimizing spatial efficiency and streamlining your operational workflow to perfection.
3. ESSENTIAL CORE OF THE BAG FILTER SYSTEM
Our advanced compression spring pressure piece is engineered to deliver a flawless 360° seal with the filter bag, ensuring complete prevention of side leakage. The reinforced filter bag is masterfully designed to support the robust flower plate, withstanding higher pressures while minimizing pressure loss, hence elevating filtration performance. With a plethora of customization options, we offer customer flow configurations ranging from 2 to 24 bags, meticulously tailored to meet your specific needs with precision.
Embrace the effortless fluidity of filter bag changes with our innovative spring locking device, ensuring a seamless experience every time.
Our meticulously engineered basket gasket is designed for absolute leakage prevention, guaranteeing reliable and consistent performance.
4. CUSTOMIZABLE INLET AND OUTLET DIRECTION
We present an array of customizable options for inlet and outlet directions, allowing for precise alignment with your installation requirements and user preferences. The adaptable flange diameter, adjustable from DN25 to DN250, ensures seamless integration with your existing system, delivering unparalleled adaptability and convenience.
Our expertly engineered bag filters stand as a testament to the pinnacle of precision engineering. Meticulously crafted, they are designed to efficiently extract even the most minute trace impurities from liquids. These indispensable filters are the cornerstone of numerous industries, providing unparalleled precision and unwavering reliability.
- Refined Chemicals Sector. Paint and Ink Filtration Excellence.
- Oil & Gas Sector Innovations. Providing robust and reliable solutions for the complex challenges of produced water filtration and well injection water purification, ensuring optimal performance and sustainability.
- Innovative Solutions for the Food & Beverage Industry. Offering expert, state-of-the-art filtration tailored specifically for beer and wine production, juice concentrate clarification, and ensuring the pristine processing of soft drinks and bottled water.
- Precision Solutions in Automotive Manufacturing. Our solutions deliver enhanced performance in automotive spray coating pretreatment, electrophoretic paint processing, and superior finish and primer filtration. We also ensure impeccable filtration for parts cleaning fluids, guaranteeing quality at every stage.
- Innovative Applications in the Pulp & Paper Industry. Providing cutting-edge coating filtration solutions tailored to meet the unique demands of the pulp and paper industry, ensuring efficiency and quality.
- Efficiency in the Machining Industry. Delivering superior filtration solutions to enhance the efficiency of machine tool coolant circulation, cleaning fluids, and the management of hydraulic and lubricating oils, optimizing performance and longevity.



Hebei SLOT Filter Technology Co., LtdHebei SLOT Filter Technology Co., Ltd. is a leader in the dynamic realm of industrial precision filtration and innovative self-cleaning filtration solutions. With over a decade of illustrious experience, we excel in design and R&D, leveraging state-of-the-art filtration technology to offer an extensive range of premium solutions. Our products are comprehensive, providing turnkey filtration services tailored to meet the sophisticated needs of our valued clients.
SLOT proudly maintains the esteemed ISO9001 quality management system certification and has earned accolades from SGS, which highlights our relentless commitment to excellence. We strictly comply with international standards and industry-specific regulations, carefully customizing our designs and manufacturing practices to meet the unique specifications of each client. Our passion lies in crafting filtration equipment and components that deliver exceptional performance and top-tier quality.
Our SLOT automatic self-cleaning filter systems are the preferred choice across an extensive range of industries, including petrochemicals, fine chemicals, energy and power sectors, water treatment, automotive manufacturing, food and beverage, and metal processing. We have established strong, enduring partnerships with numerous distinguished industrial enterprises both domestically and internationally.
Renowned for our outstanding product filter performance, cutting-edge manufacturing capabilities, and dedicated professional services, SLOT embodies excellence. For those seeking unmatched filter system performance, unparalleled quality, and exceptional service, SLOT is your trusted partner for the long haul.

Quality Management
FAQ
1. Who are we?
Established in 2014 in the vibrant business hub of Hebei, China, we are renowned as Hebei Slot Filter Technology Co., Ltd. As trailblazers of innovation, our revolutionary solutions have made significant impacts in North America (40%), Western Europe (30%), South Asia (10%),
Africa (10%), and the Middle East (10%). Our dynamic team, comprising 11 to 50 dedicated professionals, is passionately committed to delivering unparalleled excellence at every stage.
2. How can we guarantee quality?
Our unwavering promise is quality without compromise. We meticulously validate standards by offering a sample before commencing full production, ensuring perfect alignment every time.
Each shipment undergoes comprehensive inspections, assuring that our high-quality standards and consistent reliability are flawlessly met.
3. What can you buy from us?
Explore our extensive range of expertly crafted products, including the precision-engineered Johnson Screen, resilient Bridge Slotted Well Screens, and Sand Control Well Screens, along with GravelPre-pack Screen, cutting-edge Pipe-based screens, durable Perforated Pipes, and top-of-the-line API/5CT Casing and Tubing. Each product is meticulously designed to exceed your expectations.
4. Why should you buy from us, not from other suppliers?
1. We offer a full spectrum of OEM & ODM solutions, customizing products to seamlessly meet your unique requirements.
2. Our expert team excels in bespoke design and development, transforming your ideas into reality with custom drawings tailored to your specifications.
3. Equipped with an advanced R&D team, we are committed to delivering cutting-edge and innovative solutions, setting new industry standards.
5. What services can we provide?
We offer flexible delivery options including: FOB, CFR, CIF, EXW, FAS, CIP, FCA, CPT, DEQ, DDP, DDU, Express Delivery, DAF, DES;
We accept a wide range of payment currencies including USD, EUR, JPY, CAD, AUD, HKD, GBP, CNY, CHF; ensuring a smooth and seamless transaction experience.
For your convenience, we support numerous payment methods: T/T, L/C, D/P D/A, MoneyGram, Credit Card, PayPal, Western Union, Cash, Escrow; offering the utmost flexibility.
Communicate with us effortlessly in various languages: English, Chinese, Spanish, Japanese, Portuguese, German, Arabic, French, Russian, Korean, Hindi, and Italian.
Eager to become an agent in your local market? Contact us, and let's embark on exciting opportunities together.