Introducing the Quick Open Series: Experience top-tier engineering excellence with our multi-bag filter housings, now featuring an innovative self-balancing V-clamp locking mechanism. This series represents a revolutionary leap in design, providing unparalleled convenience with effortless, single-handed operation. Perfectly tailored for high-flow applications, this is the ultimate choice for those who prioritize efficiency and ease of use. Meticulously engineered for scenarios requiring frequent replacements, this advanced system is a testament to engineering prowess, crafted to dramatically reduce downtime. By optimizing functionality, it significantly cuts operating costs, ensuring a seamless and uninterrupted batch processing experience. Revel in the perfect blend of efficiency and cost-effectiveness, keeping your operations impeccably smooth.
Redefining safety and efficiency, our fully interlocked pressure release mechanism offers unwavering peace of mind in every situation. The robust, corrosion-resistant V-clamp construction, enhanced by a unique screw-drive mechanism, assures years of reliable service, making it an indispensable tool for discerning users.
Elevate your filtration experience with our diverse range of precise and durable filter-bag materials, each expertly crafted to meet distinct requirements:
PP (Polypropylene): Exceptionally rated at 1-200µm, this versatile material withstands temperatures up to 70°C, making it adaptable across a wide array of environments and applications.
PE (Polyester): This durable material offers a broad range of 1-200µm and can endure temperatures reaching up to 120°C, making it perfect for the most demanding and rigorous applications.
Nylon: Featuring an impressive range of 25-800µm and a remarkable high-temperature tolerance of up to 150°C, this material is designed for the most challenging and strenuous environments.
Discover the cutting-edge potential of our Stainless Steel Multi-bag Filter Machine, a masterpiece of excellence and precision engineering. 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, our extensive selection caters to a wide range of filtration requirements, offering tailor-made solutions for every need.
The multi bag filter system represents the pinnacle of advanced filtration technology. Ingeniously engineered, this system elevates the filtration process to new heights of precision and accuracy. At its core lies an ingeniously positioned inlet, located beneath the filter bags, which gracefully introduces the filter medium into the upper chamber of the housing. This masterful design guides the medium upwards with ease and elegance. Once there, the system expertly directs the flow downward, allowing it to pass seamlessly through the filter bags. This meticulous method ensures that impurities are efficiently captured, resulting in a pure and pristine filtrate that exits the system with unmatched efficiency and elegance. Experience the ultimate in pristine filtration with our state-of-the-art design.
To maintain peak filtration performance, vigilant monitoring of the filter bags is essential. As impurities accumulate and form compact filter cakes, leading to a differential pressure of 0.14-0.17 MPa, it becomes evident that bag replacement is necessary. During this crucial maintenance phase, ensure the system is meticulously shut down, the pressure relief valve is cautiously 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 for sustainability, can be cleaned and reused; however, they should be replaced if significantly compromised to uphold consistent performance and reliability. This maintenance cycle is crucial for ensuring efficiency and prolonging the operational life of your filtration endeavors.
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 state-of-the-art multi-bag filter system is designed with an innovative quick-opening flange ring, expertly secured by bolt fastening. This ensures unmatched pressure resistance, reinforcing confidence in its durable and steady performance. The cleverly integrated booster spring mechanism assures seamless and smooth operation, making it the ideal choice for frequent filter bag changes. Benefit from dramatically decreased downtime, remarkable productivity enhancements, reduced worker fatigue, and overall boosted operational efficiency with this ingeniously crafted system.
2. REVOLUTIONARY SPRING-BALANCE MECHANISM
Presenting an inventive spring-balance mechanism that facilitates effortless and energy-efficient operation of the upper cover, which can be smoothly adjusted from 0 to 105° at your convenience. This robust yet straightforward support structure, coupled with a sophisticated clamshell design, ensures no liquid spills when the lid is opened, optimizing space utilization and streamlining your operational workflow with precision.
3. ESSENTIAL CORE OF THE BAG FILTER SYSTEM
Our cutting-edge compression spring pressure piece provides a flawless 360° seal with the filter bag, utterly preventing any side leakage. The fortified filter bag is crafted to support the robust flower plate, enduring higher pressure while minimizing pressure loss, thereby enhancing filtration performance. We offer a wide array of customization options with customer flow configurations ranging from 2 to 24 bags, meticulously tailored to meet your exact specifications.
Enjoy seamless and effortless filter bag changes with our sophisticated spring locking device.
Our basket gasket is meticulously engineered for absolute leakage prevention, guaranteeing dependable performance.
4. CUSTOMIZABLE INLET AND OUTLET DIRECTION
We provide a variety of customizable options for inlet and outlet directions, enabling precise alignment with your installation needs and user preferences. The flexible flange diameter, adjustable from DN25 to DN250, ensures perfect integration with your existing system, offering unparalleled adaptability and seamless compatibility.
Our expertly engineered bag filters represent the pinnacle of precision engineering, meticulously designed to efficiently capture even the smallest trace impurities from liquids. These indispensable filters form the backbone of countless industries, delivering unmatched precision and steadfast reliability, ensuring that your processes run seamlessly and without compromise.
- Refined Chemicals Sector. Paint and Ink Filtration Excellence.
- Oil & Gas Sector Innovations. We provide reliable and innovative solutions to tackle the complex challenges of produced water filtration and well injection water purification, ensuring efficiency and sustainability in operations.
- Food & Beverage Industry Solutions. We offer expert filtration tailored for beer and wine production, juice concentrate clarification, and guarantee the pristine processing of soft drinks and bottled water, elevating the purity and quality of your beverage products.
- Automotive Manufacturing Precision. Our solutions deliver enhanced performance in automotive spray coating pretreatment, electrophoretic paint processing, and provide superior finish and primer filtration. We ensure impeccable filtration for parts cleaning fluids, enabling the precision and quality required in automotive manufacturing.
- Pulp & Paper Industry Applications. We provide advanced coating filtration solutions specifically tailored to meet the unique demands of the pulp and paper industry, ensuring superior quality and efficiency in every application.
- Machining Industry Efficiency. We deliver superior filtration solutions to enhance the efficiency of machine tool coolant circulation, cleaning fluids, and the management of hydraulic and lubricating oils, ensuring your operations run smoothly and effectively.



Hebei SLOT Filter Technology Co., LtdHebei SLOT Filter Technology Co., Ltd. emerges as a luminary of innovation and mastery in the dynamic realm of industrial precision filtration and self-cleaning filtration solutions. With a commendable legacy exceeding ten years, our company exemplifies unmatched expertise in design, as well as research and development. Leveraging state-of-the-art filtration technology, we offer an extensive selection of premium product resources. Our solutions are comprehensive, turnkey filtration offerings meticulously crafted to satisfy the diverse and sophisticated needs of our esteemed clients.
SLOT proudly upholds the distinguished ISO9001 quality management system certification, also earning accolades from SGS, highlighting our steadfast commitment to excellence. We meticulously conform to international standards and specific industry regulations, tailoring our product designs and manufacturing processes to meet each client's unique specifications. Our passion is to produce filtration equipment and components that embody exceptional performance and superior quality.
Our SLOT automatic self-cleaning filter systems are the go-to choice across a diverse 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 and lasting partnerships with numerous esteemed industrial enterprises both domestically and globally, ensuring our presence is felt worldwide.
SLOT is renowned for exceptional product filter performance, cutting-edge manufacturing capabilities, and dedicated professional services. For those in pursuit of superior filter system performance, uncompromised quality, and distinguished service, SLOT stands as your trusted partner for the long haul, embodying a standard of excellence.

Quality Management
FAQ
1. Who are we?
Established in 2014 in the vibrant region of Hebei, China, we are Hebei Slot Filter Technology Co., Ltd. As pioneers of innovation, our groundbreaking solutions have made a mark across North America (40%), Western Europe (30%), South Asia (10%),
Africa (10%), and the Middle East (10%). Our dynamic team, consisting of 11 to 50 dedicated professionals, is fervently committed to delivering excellence at every step.
2. How can we guarantee quality?
Our promise is firm-quality without compromise. We validate standards by providing a sample before initiating full production to ensure everything is flawlessly aligned.
Each shipment undergoes detailed inspections, ensuring our high-quality standards and unwavering consistency are met impeccably.
3. What can you buy from us?
Discover our wide-ranging assortment of meticulously crafted products, such as the precision-crafted Johnson Screen, robust Bridge Slotted Well Screens, and Sand Control Well Screens, along with GravelPre-pack Screen, state-of-the-art Pipe-based screens, strong Perforated Pipes, and superior API/5CT Casing and Tubing. Each product is engineered to perform beyond expectations.
4. Why should you buy from us, not from other suppliers?
1. We deliver a comprehensive suite of OEM & ODM solutions, tailoring products to fit your distinctive needs seamlessly.
2. Our skilled team is proficient in bespoke design and development, turning your concepts into reality through custom drawings.
3. With a cutting-edge R&D team, we are dedicated to providing advanced and innovative solutions, setting new benchmarks in the industry.
5. What services can we provide?
We provide flexible delivery solutions including: FOB, CFR, CIF, EXW, FAS, CIP, FCA, CPT, DEQ, DDP, DDU, Express Delivery, DAF, DES;
Our wide acceptance of payment currencies includes USD, EUR, JPY, CAD, AUD, HKD, GBP, CNY, CHF; ensuring a smooth transaction experience.
For your ease, we support a multitude of payment methods: T/T, L/C, D/P D/A, MoneyGram, Credit Card, PayPal, Western Union, Cash, Escrow; offering you the utmost convenience.
Communicate with us effortlessly in a variety of languages: English, Chinese, Spanish, Japanese, Portuguese, German, Arabic, French, Russian, Korean, Hindi, and Italian.
Aspiring to become an agent in your local market? Reach out to us, and let's explore exhilarating opportunities together.