Our Quick Open series multi-bag filter housings introduce a revolutionary self-balancing V-clamp locking mechanism, setting a new benchmark beyond conventional designs. This innovative feature enables effortless, single-handed operation, making it the ideal solution for high flow rate applications where frequent element replacements are essential.
Experience minimal downtime with our design, which significantly reduces operating costs and ensures seamless batch processes.
Safety and efficiency are paramount, with a fully-interlocked pressure release system that guarantees protection under all operating conditions. Crafted with a robust, corrosion-free V-clamp and a proprietary screw-drive mechanism, this housing promises unparalleled durability, offering users years of reliable performance.
Transform your filtration capabilities with our array of high-precision and durable filter-bag materials, each engineered to meet exacting standards:
PP (Polypropylene): With a rating of 1-200µm, this versatile material withstands temperatures up to 70°C, making it perfect for a wide range of applications.
PE (Polyester): Known for its durability, it offers a broad range of 1-200µm and can withstand temperatures up to 120°C, ideal for challenging applications.
Nylon: With an impressive range of 25-800µm and resistance to high temperatures up to 150°C, this material is designed for the toughest environments.
Uncover the advanced capabilities of our Stainless Steel Multi-bag Filter Machine, an embodiment of superior engineering and precision. Delve into our Filter-Bag Numbers and their Comprehensive Specifications: 1#: 180mmD x 410mmL; 2#: 180mmD x 810mmL; 3#: 102mmD x 210mmL; 4#: 102mmD x 380mmL. Our diverse selection serves a vast array of filtration needs, ensuring bespoke solutions for every scenario.

The multi bag filter system represents the epitome of advanced engineering, meticulously designed to revolutionize the filtration experience with unparalleled precision. Featuring a strategically positioned inlet beneath the filter bags, the system graciously guides the filter medium upwards into the housing's upper chamber. From this vantage point, it gracefully directs the flow downwards with impeccable accuracy, expertly channeling through the filter bags. This sophisticated process adeptly captures impurities, delivering nothing less than the purest filtrate with unmatched grace and efficiency. Experience the zenith of pristine filtration with our cutting-edge design.
To maintain supreme filtration performance, diligent monitoring of the filter bags is essential. As impurities gather and form dense filter cakes, leading to a differential pressure of 0.14-0.17 MPa, it becomes evident that bag replacement is crucial. During this critical maintenance stage, ensure the system is carefully shut down, the pressure relief valve gently opened, and the filter cover delicately removed. Once fresh bags are installed, the system stands ready to resume its impeccable operation. Our filter bags, designed for eco-friendliness, can be cleaned and reused, yet should be replaced if significantly impaired to preserve consistent performance and dependability. This maintenance cycle is key to efficiency and extended operational longevity in your filtration pursuits.
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 engineered with a quick-opening flange ring, meticulously secured by robust bolt fastening to ensure unmatched pressure resistance. This design epitomizes steadfast reliability and exceptional performance. The ingenious booster spring mechanism facilitates effortless operation, simplifying frequent filter bag changes for unparalleled ease. Witness a remarkable reduction in downtime, substantial boosts in productivity, minimized worker fatigue, and a significant enhancement in operational efficiency with this expert-engineered system.
2. REVOLUTIONARY SPRING-BALANCE MECHANISM
Experience the brilliance of our revolutionary spring-balance mechanism, delivering effortless and labor-saving operation of the upper cover. With smooth 0 to 105° adjustability, it features a sleek, clamshell design that ensures zero liquid spillage upon opening. This efficient structure maximizes spatial utilization and streamlines workflow, optimizing every inch of your operational space and enhancing your productivity.
3. ESSENTIAL CORE OF THE BAG FILTER SYSTEM
Our advanced compression spring pressure piece ensures a flawless, comprehensive 360° seal with the filter bag, fully eliminating side leakage. This reinforced filter bag design supports the durable flower plate, allowing it to withstand higher pressures while minimizing pressure loss, thus enhancing filtration efficacy. Offering a range of customization options, we deliver customer flow configurations from 2 to 24 bags, precisely engineered to fulfill your specific requirements.
Experience smooth and effortless filter bag changes with our cutting-edge spring locking device, ensuring your workflow remains seamless and efficient at all times.
Our expertly crafted basket gasket guarantees absolute leakage prevention, ensuring steadfast and dependable performance under all conditions.
4. CUSTOMIZABLE INLET AND OUTLET DIRECTION
We provide a diverse array of customizable inlet and outlet direction options, ensuring precise alignment with your installation requirements and user preferences. The versatile flange diameter, adjustable from DN25 to DN250, ensures perfect integration with your existing system, offering unparalleled adaptability and flexibility to meet any challenge.
Our expertly engineered bag filters stand as a hallmark of precision engineering excellence. Crafted with meticulous attention to detail, they efficiently extract even the tiniest trace impurities from liquids. These vital filters serve as the foundation across a wide range of industries, offering unparalleled precision and reliability that remains consistent and unwavering.
- Refined Chemicals Sector: Harnessing the full power of high-precision filtration to significantly enhance the quality and purity of chemical products. Paint and Ink Filtration Excellence: Guaranteeing vibrant colors and impeccable finishes, our filters set the gold standard in paint and ink filtration.
- Oil & Gas Sector Innovations: Pioneering the frontier with cutting-edge filtration solutions that boost efficiency and enhance safety within the oil and gas sector. Providing dependable solutions for the intricate challenges of produced water filtration and well injection water purification, ensuring peak performance and strict environmental compliance.
- Food & Beverage Industry Solutions: Elevating quality and ensuring safety with customized filtration solutions for diverse food and beverage processing requirements. Offering specialized filtration expertise specifically for beer and wine production, juice concentrate clarification, and guaranteeing pristine processing of soft drinks and bottled water, consistently maintaining exceptional quality and taste.
- Automotive Manufacturing Precision: Driving industry excellence with advanced filtration solutions for spray coating pretreatment, electrophoretic paint processing, and ensuring a superior finish and precise primer filtration. Delivering heightened performance in automotive spray coating pretreatment, electrophoretic paint processing, and achieving a superior finish and primer filtration. Our solutions also provide impeccable filtration for parts cleaning fluids, optimizing performance and precision in every application.
- Pulp & Paper Industry Applications: Providing advanced coating filtration solutions tailored to meet the distinct and demanding needs of the pulp and paper industry. Offering advanced coating filtration solutions meticulously tailored to the unique demands of the pulp and paper industry, ensuring smooth, flawless production processes.
- Machining Industry Efficiency: Setting the standard in enhancing tool performance and longevity through superior filtration technology. Providing unparalleled filtration to elevate the efficiency and performance of machine tool coolant circulation, cleaning fluids, and the effective management of hydraulic and lubricating oils, significantly boosting overall machining productivity.



Hebei SLOT Filter Technology Co., LtdHebei SLOT Filter Technology Co., Ltd. shines brilliantly in the ever-evolving field of industrial precision filtration and self-cleaning filtration solutions. With a distinguished history that extends over a remarkable decade, our company is a beacon of exceptional expertise in design, research, and development. By harnessing cutting-edge filtration technology, we provide an extensive array of high-caliber product resources. Our comprehensive solutions deliver turnkey filtration systems meticulously tailored to meet the diverse and sophisticated demands of our esteemed clients.
At SLOT, we proudly uphold our esteemed ISO9001 quality management system certification, alongside commendations from SGS, underscoring our unwavering commitment to excellence. We rigorously adhere to international standards and specific industry regulations, crafting our product designs and manufacturing processes to meet each client's unique specifications. Our dedication results in filtration equipment and components that epitomize extraordinary performance and unparalleled quality.
Our SLOT automatic self-cleaning filter systems are the gold standard across a wide array 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 numerous prestigious industrial enterprises, both domestically and globally.
Renowned for our exceptional product filter performance, state-of-the-art manufacturing capabilities, and dedicated professional services, SLOT is synonymous with excellence. For those seeking top-tier filter system performance, flawless quality, and outstanding service, SLOT is your trusted partner for lasting success.

Quality Management
FAQ
1. Who are we?
Founded in the dynamic heart of Hebei, China, in 2014, Hebei Slot Filter Technology Co., Ltd. stands as a beacon of cutting-edge innovation. With our pioneering solutions, we proudly serve diverse markets including North America (40%), Western Europe (30%), South Asia (10%),
Africa (10%), and the Middle East (10%). Our dedicated team of 11 to 50 expert professionals works tirelessly to achieve excellence and deliver extraordinary results.
2. How can we guarantee quality?
Our steadfast commitment ensures unmatched quality. Prior to full-scale production, we conduct thorough sample evaluations to validate standards, ensuring flawless product alignment.
Each shipment is subjected to meticulous inspections, consistently upholding our rigorous quality benchmarks with impeccable precision and unmatched consistency.
3. What can you buy from us?
Explore our extensive range of expertly crafted products, including the precision-engineered Johnson Screen, durable Bridge Slotted Well Screens, and Sand Control Well Screens, along with GravelPre-pack Screen, innovative Pipe-based screens, robust Perforated Pipes, and premium API/5CT Casing and Tubing. Each product is meticulously designed to exceed performance expectations.
4. Why should you buy from us, not from other suppliers?
1. We offer a comprehensive range of OEM & ODM solutions, seamlessly tailoring products to meet your unique specifications.
2. Our expert team excels in custom design and development, transforming your visions into reality with bespoke drawings.
3. With a state-of-the-art R&D team, we deliver innovative solutions that set new industry standards and drive advancements.
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;
To facilitate seamless transactions, we accept a wide range of payment currencies such as USD, EUR, JPY, CAD, AUD, HKD, GBP, CNY, CHF.
For your utmost convenience, we support various payment methods: T/T, L/C, D/P D/A, MoneyGram, Credit Card, PayPal, Western Union, Cash, Escrow, offering ultimate payment flexibility.
Communicate effortlessly with us in a multitude of languages, including: 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 explore thrilling opportunities together.