Introducing the Quick Open Series: Experience the pinnacle of engineering excellence with our state-of-the-art multi-bag filter housings. These housings boast an innovative self-balancing V-clamp locking mechanism, a hallmark of modern design that allows for seamless, one-handed operation. Perfectly engineered for high-flow applications, it becomes the ultimate choice for those who prioritize both efficiency and user-friendly functionality. Meticulously engineered for scenarios necessitating frequent replacements, this sophisticated system shines as an engineering marvel, deftly reducing downtime. By enhancing operational efficiency, it effectively lowers operating costs, ensuring a seamless and uninterrupted batch processing experience. Indulge in the perfect blend of efficiency and cost-effectiveness, assuring smooth and flawless operations.
Revolutionizing safety and efficiency, our fully interlocked pressure release mechanism provides consistent peace of mind across all situations. The robust, corrosion-resistant V-clamp construction, enhanced with a unique screw-drive mechanism, guarantees years of reliable service, securing its position as an indispensable tool for discerning users.
Elevate your filtration capabilities with our expansive array of precise and durable filter-bag materials, each meticulously designed to meet specific demands:
PP (Polypropylene): Ideally rated from 1-200µm, this versatile material can endure temperatures up to 70°C, proving to be adaptable across a multitude of settings and applications.
PE (Polyester): This durable material spans a broad range of 1-200µm and withstands temperatures up to 120°C, making it ideal for the most challenging and demanding applications.
Nylon: Offering an impressive range of 25-800µm, with an exceptional high-temperature tolerance of up to 150°C, this material is crafted for the most rigorous and strenuous environments.
Discover the revolutionary potential of our Stainless Steel Multi-bag Filter Machine, a paragon of excellence and precision engineering. Explore our Filter-Bag Numbers accompanied by their Comprehensive 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 addresses a vast spectrum of filtration requirements, offering bespoke solutions tailored to meet every need.
The multi-bag filter system is a marvel of modern engineering, masterfully designed to enhance the filtration process with unparalleled precision. Featuring an inlet ingeniously placed below the filter bags, the system allows the filter medium to flow effortlessly upwards into the housing's upper chamber. Here, the system expertly directs the medium downwards, navigating through the filter bags with flawless accuracy. This sophisticated method ensures that impurities are effectively captured, resulting in a pristine filtrate that exits the system with unmatched elegance and efficiency. Experience the ultimate in advanced filtration technology with our cutting-edge design.
To maintain peak filtration efficiency, it is essential to monitor the filter bags consistently. As impurities build up, forming dense filter cakes and creating a differential pressure of 0.14-0.17 MPa, it's crucial to replace the bags. During this critical maintenance stage, carefully shut down the system, open the pressure relief valve, and gently remove the filter cover. Once new bags are installed, the system can return to its seamless operation. Our filter bags are designed with sustainability in mind, allowing for cleaning and reuse, yet they should be replaced if substantially degraded to ensure ongoing performance and reliability. This maintenance cycle is crucial for maximizing efficiency and extending the operational life of 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 cutting-edge multi-bag filter system showcases a quick-opening flange ring, meticulously secured with bolt fastening technology. This ensures unparalleled pressure resistance, giving you absolute confidence in its sturdy and dependable performance. The built-in booster spring mechanism facilitates effortless and smooth operation, making it the ultimate choice for frequent filter bag replacements. Enjoy dramatically reduced downtime, remarkable productivity enhancements, minimized worker exertion, and overall superior operational efficiency with this meticulously engineered system.
2. REVOLUTIONARY SPRING-BALANCE MECHANISM
Presenting a groundbreaking spring-balance mechanism that offers seamless and labor-saving operation of the upper cover, easily adjustable from 0 to 105° as required. This robust yet straightforward support structure, paired with an elegant clamshell design, ensures no liquid spillage upon opening the lid, optimizing space utilization and refining your operational efficiency.
3. ESSENTIAL CORE OF THE BAG FILTER SYSTEM
Our state-of-the-art compression spring pressure piece delivers a flawless 360° seal with the filter bag, utterly preventing any side leakage. The reinforced filter bag is designed to support the robust flower plate, capable of withstanding higher pressure while minimizing pressure loss, thereby enhancing filtration efficacy. With a vast array of customization options, we provide customer flow configurations ranging from 2 to 24 bags, expertly tailored to your exact specifications.
Experience seamless and effortless filter bag changes with our advanced spring locking device
Our basket gasket is engineered for absolute leakage prevention, ensuring reliable performance.
4. CUSTOMIZABLE INLET AND OUTLET DIRECTION
We offer a wide selection of customizable options for inlet and outlet directions, allowing precise alignment with your installation specifications and user preferences. The versatile flange diameter, adjustable from DN25 to DN250, ensures perfect integration with your existing system, offering unrivaled adaptability.
Our expertly engineered bag filters are a testament to precision engineering, meticulously crafted 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: Our advanced filtration solutions ensure optimum purity and performance, meeting the high standards of chemical refinement processes. Paint and Ink Filtration Excellence: Achieving superior clarity and consistency in the painting and ink manufacturing processes with our cutting-edge filtration systems.
- Oil & Gas Sector Innovations: Transforming the oil and gas industry with innovative filtration solutions that enhance operational efficiency and safety. Providing reliable solutions for the complex challenges of produced water filtration and well injection water purification, ensuring effective and sustainable results.
- Food & Beverage Industry Solutions: Delivering unmatched filtration quality to guarantee the safety and purity of consumable products. Offering expert filtration tailored for beer and wine production, juice concentrate clarification, and ensuring the pristine processing of soft drinks and bottled water, enhancing product quality at every turn.
- Automotive Manufacturing Precision: Elevating production standards with our precise filtration solutions, ensuring peak performance and quality. Delivers enhanced performance in automotive spray coating pretreatment, electrophoretic paint processing, and superior finish and primer filtration. Our solutions also ensure impeccable filtration for parts cleaning fluids, optimizing the entire manufacturing process.
- Pulp & Paper Industry Applications: Providing advanced coating filtration solutions tailored to the unique demands of the pulp and paper industry, enhancing product durability and quality. Providing advanced coating filtration solutions tailored to the unique demands of the pulp and paper industry, ensuring the production of high-quality, refined paper products.
- Machining Industry Efficiency: Offering superior filtration solutions to maximize machine tool performance and longevity, ensuring efficient operation and maintenance. Delivering superior filtration to enhance the efficiency of machine tool coolant circulation, cleaning fluids, and the management of hydraulic and lubricating oils, driving productivity and reliability in machining operations.



Hebei SLOT Filter Technology Co., LtdHebei SLOT Filter Technology Co., Ltd. stands as a beacon of innovation and expertise in the ever-evolving world of industrial precision filtration and self-cleaning filtration solutions. With an impressive legacy that spans over a decade, our company showcases unparalleled prowess in design and research & development. By harnessing cutting-edge filtration technology, we present a vast array of premium product resources. Our offerings are comprehensive, turnkey filtration solutions designed to meet the diverse and discerning demands of our esteemed clientele.
SLOT proudly upholds the prestigious ISO9001 quality management system certification and has garnered recognition from SGS, underscoring our unwavering dedication to excellence. We rigorously adhere to international standards and specific industry regulations, meticulously customizing our product designs and manufacturing processes to meet each client's unique specifications. Our passion is focused on producing filtration equipment and components that epitomize outstanding performance and superior quality.
Our SLOT automatic self-cleaning filter systems are the preferred choice across a vast array of industries. These include petrochemicals, fine chemicals, energy and power sectors, water treatment, automotive manufacturing, food and beverage, and metal processing. We have forged strong and enduring partnerships with a multitude of esteemed industrial enterprises both within our nation and on the international stage.
Renowned for our exceptional product filter performance, state-of-the-art manufacturing capabilities, and dedicated professional services, SLOT is synonymous with excellence. For those in pursuit of superior filter system performance, uncompromised quality, and distinguished service, SLOT stands as your trusted partner for the long term.

Quality Management
FAQ
1. Who are we?
Established in 2014 in the vibrant and industrious region of Hebei, China, Hebei Slot Filter Technology Co., Ltd. stands as a beacon of innovation and excellence. Our pioneering solutions have created significant impact across global markets, with strong footholds in North America (40%), Western Europe (30%), South Asia (10%),
Africa (10%), and the Middle East (10%). Our talented and dynamic team, comprising of 11 to 50 dedicated professionals, is passionately committed to delivering exceptional quality and inventive solutions at every juncture.
2. How can we guarantee quality?
Our steadfast promise is the assurance of uncompromised quality. We rigorously validate standards by providing a sample prior to full-scale production, ensuring that every detail is flawlessly aligned to your specific requirements.
Meticulously detailed inspections accompany each shipment, ensuring our high-quality standards are consistently met with precision and reliability.
3. What can you buy from us?
Explore our extensive array of meticulously engineered products, including the precision-crafted Johnson Screen, the robust Bridge Slotted Well Screens, and the Sand Control Well Screens. Additionally, we offer GravelPre-pack Screen, cutting-edge Pipe-based screens, strong Perforated Pipes, and superior API/5CT Casing and Tubing. Every product is designed to exceed industry performance standards and fulfill your specific needs.
4. Why should you buy from us, not from other suppliers?
1. We offer an extensive suite of OEM & ODM solutions, seamlessly tailoring products to meet your unique requirements.
2. Our expert team excels in custom design and development, transforming your ideas into reality with precision through bespoke drawings.
3. With a state-of-the-art R&D team, we are devoted to delivering advanced and innovative solutions, setting new industry standards and benchmarks.
5. What services can we provide?
We offer flexible and comprehensive delivery solutions including: FOB, CFR, CIF, EXW, FAS, CIP, FCA, CPT, DEQ, DDP, DDU, Express Delivery, DAF, DES; maximizing your convenience and satisfaction.
Our acceptance of a wide range of payment currencies, including USD, EUR, JPY, CAD, AUD, HKD, GBP, CNY, CHF, ensures a seamless and smooth transaction experience.
For your utmost ease, we support an extensive array of payment methods: T/T, L/C, D/P D/A, MoneyGram, Credit Card, PayPal, Western Union, Cash, Escrow; offering you unparalleled convenience and flexibility.
Communicate with us effortlessly in a rich variety of languages: English, Chinese, Spanish, Japanese, Portuguese, German, Arabic, French, Russian, Korean, Hindi, and Italian.
Aspiring to become our agent in your local market? Reach out to us, and together let's explore exciting and rewarding opportunities.