Introducing our Quick Open series multi-bag filter housings, a marvel of modern filtration technology that incorporates a self-balancing V-clamp locking mechanism. This innovation represents a significant advancement over traditional designs. Its intuitive, single-handed operation is tailored for high flow rate applications, offering an unparalleled level of convenience for frequent element replacement.
This feature dramatically reduces downtime and operational costs while ensuring seamless batch processing.
Safety and efficiency are amplified by a fully-interlocked pressure release system, guaranteeing protection under all conditions. Coupled with its robust, corrosion-resistant V-clamp and exclusive screw-drive mechanism, this housing promises many years of reliable service for its users.
Experience superior filtration with our wide array of precision-engineered, durable filter-bag materials, each designed to address unique challenges:
PP (Polypropylene): With a rating of 1-200µm, this versatile material withstands temperatures up to 70°C, suitable for a diverse range of applications and environments.
PE (Polyester): Offering a robust micron range of 1-200µm and capable of withstanding temperatures up to 120°C, it excels in the toughest applications.
Nylon: With an impressive 25-800µm range and high-temperature endurance up to 150°C, this material is perfect for the most challenging industrial environments.
Unleash the unparalleled potential of our Stainless Steel Multi-bag Filter Machine, a pinnacle of engineering excellence and precision craftsmanship. Delve into our Filter-Bag Numbers and their Comprehensive Specifications: 1#: Dimensions are 180mmD x 410mmL; 2#: Dimensions are 180mmD x 810mmL; 3#: Dimensions are 102mmD x 210mmL; 4#: Dimensions are 102mmD x 380mmL. Our extensive selection is crafted to meet a broad spectrum of filtration needs, delivering bespoke solutions tailored to your exact requirements.

The multi bag filter system embodies the pinnacle of advanced engineering, meticulously crafted to redefine your filtration experience with exceptional precision. Ingeniously designed, it features an inlet strategically positioned below the filter bags, guiding the filter medium gracefully upwards into the housing's upper chamber. From this elevated position, the flow is directed downwards with impeccable precision, skillfully channeled through the filter bags. This sophisticated process captures impurities with remarkable efficiency, delivering the purest filtrate with unmatched grace. Discover the zenith of pristine filtration with our state-of-the-art design.
To ensure optimal filtration performance, vigilant monitoring of the filter bags is paramount. As impurities accumulate, forming dense filter cakes and leading to a differential pressure of 0.14-0.17 MPa, it's clear that bag replacement is essential. During this critical maintenance phase, carefully shut down the system, gently open the pressure relief valve, and delicately remove the filter cover. Once fresh bags are in place, the system is ready to resume its impeccable operation. Our filter bags, designed with eco-friendliness in mind, can be cleaned and reused but should be replaced if significantly impaired to maintain consistent performance and reliability. This maintenance cycle is crucial for optimizing efficiency and ensuring the extended longevity 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 cutting-edge multi-bag filter system features a quick-access flange ring, securely fastened with high-strength bolts. This design guarantees exceptional pressure resistance, offering reliable and consistent performance. The sophisticated booster spring mechanism enables smooth operation, simplifying frequent filter bag swaps. Witness a remarkable decrease in downtime, significant boosts in productivity, reduced worker fatigue, and a notable improvement in operational efficiency with this precisely crafted system.
2. REVOLUTIONARY SPRING-BALANCE MECHANISM
Experience the innovation of our groundbreaking spring-balance mechanism, offering smooth and effortless operation of the upper cover. With easy adjustability from 0 to 105°, it features an elegant, clamshell design that prevents any liquid spills upon opening. This smart structure maximizes spatial efficiency and optimizes your workflow, ensuring you make the most of your operational environment.
3. ESSENTIAL CORE OF THE BAG FILTER SYSTEM
Our sophisticated compression spring pressure element ensures a perfect 360° seal with the filter bag, completely eliminating side leakage. The reinforced filter bag supports the sturdy flower plate, capable of withstanding higher pressures while reducing pressure loss, thereby improving filtration performance. We offer a variety of customization options, providing customer flow configurations from 2 to 24 bags, meticulously designed to match your precise requirements.
Enjoy smooth, effortless filter bag changes with our state-of-the-art spring locking device, ensuring an uninterrupted workflow.
Our basket gasket is engineered to guarantee complete leakage prevention, ensuring consistent and reliable performance.
4. CUSTOMIZABLE INLET AND OUTLET DIRECTION
We provide a wide range of customizable inlet and outlet direction options, ensuring perfect alignment with your specific installation needs and user preferences. The adaptable flange diameter, adjustable from DN25 to DN250, ensures seamless integration with your existing system, offering unmatched adaptability and versatility.
Our expertly engineered bag filters stand as a testament to the pinnacle of precision engineering. Crafted with meticulous attention to detail, they excel in extracting even the most minuscule trace impurities from liquids. These indispensable filters serve as the cornerstone across a spectrum of industries, offering unmatched precision and unwavering reliability.
- Refined Chemicals Sector: Harnessing the full potential of high-precision filtration to elevate the quality and purity of chemical products to unparalleled heights. Paint and Ink Filtration Excellence: Our filters set the benchmark, ensuring vibrant colors and flawless finishes for paint and ink, consistently delivering top-tier filtration standards.
- Oil & Gas Sector Innovations: At the forefront with state-of-the-art filtration solutions, we push the boundaries of efficiency and safety in the oil and gas industry. We provide reliable solutions to address the complex challenges of produced water filtration and well injection water purification, securing optimal performance and rigorous environmental compliance.
- Food & Beverage Industry Solutions: Elevating quality and safety with bespoke filtration options tailored for the diverse needs of food and beverage processing, ensuring excellence in every drop. Offering expert filtration specifically tailored for beer and wine production, juice concentrate clarification, and pristine processing of soft drinks and bottled water, we maintain exceptional quality and taste.
- Automotive Manufacturing Precision: Driving excellence with cutting-edge filtration solutions for spray coating pretreatment, electrophoretic paint processing, and delivering a superior finish and primer filtration. Our offerings deliver enhanced performance in automotive spray coating pretreatment, electrophoretic paint processing, and superior finish and primer filtration. Additionally, our solutions ensure impeccable filtration for parts cleaning fluids, optimizing performance and precision in every application.
- Pulp & Paper Industry Applications: Providing advanced coating filtration solutions tailored to the unique and demanding needs of the pulp and paper industry, ensuring seamless and flawless production processes. Delivering advanced coating filtration solutions crafted to meet the unique demands of the pulp and paper industry, we ensure smooth and flawless production processes.
- Machining Industry Efficiency: Pioneering the enhancement of tool performance and longevity through superior filtration technology. Offering superior filtration to boost the efficiency and performance of machine tool coolant circulation, cleaning fluids, and effective management of hydraulic and lubricating oils, ultimately enhancing overall machining productivity.



Hebei SLOT Filter Technology Co., LtdHebei SLOT Filter Technology Co., Ltd. stands as a beacon of innovation and excellence in industrial precision and self-cleaning filtration solutions. With a remarkable legacy of over a decade, our company showcases unparalleled proficiency in both design and research & development. Utilizing state-of-the-art filtration technology, we present an extensive array of superior quality product offerings. Our all-inclusive solutions deliver complete turnkey filtration systems meticulously crafted to meet the evolving and sophisticated needs of our esteemed clients.
At SLOT, we proudly bear the prestigious ISO9001 quality management system certification and have garnered commendation from SGS, underscoring our unwavering dedication to excellence. Our operations are meticulously aligned with international standards and specific industry guidelines, with each product design and manufacturing process custom-tailored to meet the distinct specifications of our clients. We are steadfastly devoted to crafting filtration equipment and components that exemplify extraordinary performance and unrivaled quality.
Our premier SLOT automatic self-cleaning filter systems are the top choice across a multitude of industries. These include petrochemicals, fine chemicals, the energy and power sectors, water treatment, automotive manufacturing, food and beverage, and metal processing. We have forged robust and enduring partnerships with numerous esteemed industrial enterprises, both in domestic markets and on the global stage.
Renowned for our exceptional product filter performance, advanced manufacturing capabilities, and dedicated professional services, SLOT is synonymous with unparalleled excellence. For those seeking the pinnacle of filter system performance, unmatched quality, and exemplary service, SLOT is your trusted partner for sustained success.

Quality Management
FAQ
1. Who are we?
Since our inception in 2014 in the vibrant province of Hebei, China, Hebei Slot Filter Technology Co., Ltd. has become a beacon of top-tier innovation. We are proud to offer groundbreaking solutions that make waves across continents, with a significant presence in North America (40%), Western Europe (30%), and growing influence in South Asia (10%),
Africa (10%), and the Middle East (10%). Our dynamic team, consisting of 11 to 50 highly skilled professionals, is dedicated to delivering excellence and surpassing expectations at every turn.
2. How can we guarantee quality?
Our steadfast promise is to provide quality that is second to none. Before commencing full-scale production, we meticulously evaluate samples to ensure they meet our stringent standards perfectly.
Every shipment is subjected to comprehensive inspections, adhering to our stringent quality criteria, ensuring unparalleled consistency and precision in every product we deliver.
3. What can you buy from us?
Explore our vast array of finely crafted products including the meticulously engineered Johnson Screen, robust Bridge Slotted Well Screens, and Sand Control Well Screens, complemented by our GravelPre-pack Screen, innovative Pipe-based screens, sturdy Perforated Pipes, and top-grade API/5CT Casing and Tubing. Each offering is crafted to surpass performance standards.
4. Why should you buy from us, not from other suppliers?
1. We provide a full spectrum of OEM & ODM solutions, perfectly tailoring products to satisfy your specific needs.
2. Our team of experts specializes in custom design and development, turning your visions into reality with personalized designs.
3. With our cutting-edge R&D team, we offer innovative solutions that redefine industry benchmarks.
5. What services can we provide?
Our delivery options are as diverse as they are convenient, including: FOB, CFR, CIF, EXW, FAS, CIP, FCA, CPT, DEQ, DDP, DDU, Express Delivery, DAF, DES;
We accept a comprehensive array of payment currencies like USD, EUR, JPY, CAD, AUD, HKD, GBP, CNY, CHF, ensuring transactions are smooth and effortless.
To ensure 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, offering utmost flexibility.
Communicate with us effortlessly in a multitude of languages including English, Chinese, Spanish, Japanese, Portuguese, German, Arabic, French, Russian, Korean, Hindi, and Italian.
Eager to become an agent in your region? Reach out to us for exciting partnership opportunities.