Presenting the revolutionary Quick Open series multi-bag filter housings, a pinnacle of advanced engineering featuring an unparalleled self-balancing V-clamp locking mechanism. This cutting-edge innovation surpasses traditional designs, delivering an effortlessly smooth, single-handed operation that is remarkably user-friendly. It is the ultimate solution for applications that demand exceptionally high flow rates. Meticulously crafted to meet the demands of frequent element change-outs, this system expertly minimizes downtime, markedly cutting operating costs and ensuring an uninterrupted, efficient batch processing journey.
Experience unprecedented efficiency with a fully secure and interlocked pressure release system, ensuring absolute safety across all scenarios. Built with a sturdy, corrosion-resistant V-clamp and an exclusive screw-drive mechanism, this housing guarantees years of dependable and robust service.
Customize your filter solution with an array of precise and durable filter-bag materials, crafted to perfection:
PP: This versatile material offers a rating of 1-200µm, withstanding temperatures up to 70°C, ideal for a variety of applications.
PE: With a comprehensive range of 1-200µm, this material endures temperatures up to 120°C, perfect for more demanding applications.
Nylon: Boasting an impressive 25-800µm range and tolerating up to 150°C, ideal for the most challenging environments.
Explore the technical excellence of our Stainless Steel Multi-bag Filter Machine, engineered for superior functionality: Filter-Bag Numbers & their Specifications: 1#: With dimensions of 180mmD x 410mmL; 2#: Measuring 180mmD x 810mmL; 3#: Sized at 102mmD x 210mmL; 4#: 102mmD x 380mmL, offering a range of options to meet diverse requirements.
The multi bag filter system, masterfully engineered, initiates its process through a cleverly positioned inlet, designed to sit lower than the filter bags themselves. As the filtration medium makes its entrance through this inlet, it elegantly ascends to the upper section of the housing, right above the filter bags. Here, the medium embarks on its downward journey, smoothly permeating through the filter bags. This efficient pathway ensures that impurities are skillfully trapped within the filter bags, allowing only the purest filtrate to make a graceful exit through the outlet, thus ensuring an exceptional filtration performance.
To ensure peak performance, it is vital to vigilantly monitor the condition of the filter bags. As impurities accumulate and form a filter cake, they induce a differential pressure between 0.14-0.17 MPa, indicating it's time for bag replacement. During this critical maintenance phase, the system must be shut down, pressure relief valve opened, and filter cover removed. After placing new bags, the system can resume operation. Remarkably, filter bags may be cleaned and reused, embodying sustainable practices, yet require replacement when significantly damaged. This diligent cycle guarantees both effectiveness and durability in the filtration process.
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 - MORE PRESSURE RESISTANT
Introducing our multi-bag filter, designed to revolutionize your filtration process! With a state-of-the-art quick-opening flange ring secured by bolt fastening, this filter stands strong under pressure like no other. Equipped with a booster spring mechanism, the operation becomes effortlessly smooth, making frequent filter bag changes a breeze. Minimize downtime and maximize productivity, all while reducing worker fatigue and skyrocketing overall efficiency.
2. SPRING-BALANCE MECHANISM
Experience the elegance of our spring balance mechanism, which transforms the operation of the upper cover into an effortless task. With the ability to adjust between 0-105° with ease, this robust support structure paired with a sleek clamshell design ensures no liquid overspill, making optimal use of your valuable space.
3. THE CORE OF THE BAG FILTER SYSTEM
At the heart of our bag filter system lies an advanced compression spring pressure piece, creating an impeccable 360° seal with the filter bag to prevent any side leakage. The enhanced thickness of the filter bag supports our robust flower plate, handling higher pressures with minimal loss, thus boosting filtration performance. Customize your solution with options ranging from 2 to 24 bags, tailored precisely to your specifications for unparalleled adaptability.
Our spring locking device simplifies the process of changing filter bags, ensuring hassle-free maintenance.
Our basket gasket acts as a shield against leakage, ensuring a completely secure filtration experience.
4. DIRECTION OF INLET AND OUTLET
Flexibility is key with our customizable inlet and outlet direction options, designed to seamlessly integrate with your unique installation setup. Tailor the flange diameter to your exact requirements, from DN25 to DN250, guaranteeing a flawless fit with your system.
Our expertly engineered bag filters are masterfully crafted to efficiently extract trace fine impurities from liquids. These filters are indispensable across a multitude of industries, offering unmatched precision and reliability.
- Refined Chemicals Sector: Experience the pinnacle of purity and precision as our advanced bag filters provide critical filtration solutions for high-stakes chemical processes, ensuring consistency and quality every step of the way. Paint and Ink Filtration Excellence: Our bag filters redefine excellence in paint and ink applications, ensuring smooth textures, vibrant colors, and flawless finishes by removing unwanted particles with unrivaled efficiency.
- Oil & Gas Sector Innovations: Discover unparalleled innovations in the oil & gas sector with our bag filters, designed to optimize operational efficiency by delivering cutting-edge filtration for various automotive and industrial applications. Reliable solutions for produced water filtration, and well injection water purification: Our bag filters offer robust solutions designed to tackle the challenges of produced water filtration and well injection water purification, ensuring environmental compliance and operational excellence.
- Food & Beverage Industry Solutions: Elevate your production processes in the food and beverage industry with our bag filters that guarantee purity and safety, ensuring every drop meets the highest standards of health and quality. Expert filtration for beer and wine production, juice concentrate clarification, and the pristine processing of soft drinks and bottled water: From the brewing of the finest beers and wines to the clarification of juice concentrates, our filters ensure that soft drinks and bottled water are processed with pristine precision for the ultimate consumer satisfaction.
- Automotive Manufacturing Precision: Achieve new heights in automotive manufacturing precision with our bag filters, providing unmatched filtration for spray coating pretreatment, electrophoretic paint processing, and exceptional clarity in finish and primer filtration. Enhanced automotive spray coating pretreatment, electrophoretic paint processing, as well as finish and primer filtration. Also, impeccable filtration for parts cleaning fluids: Our bag filters are the cornerstone of automotive excellence, enhancing spray coating pretreatment, refining electrophoretic paint processing, and ensuring parts cleaning fluids are impeccably filtered.
- Pulp & Paper Industry Applications: Revolutionize your pulp and paper production with our advanced bag filters, designed to deliver precision and reliability in coating filtration, ensuring superior quality and performance across all applications. Advanced coating filtration solutions: Our cutting-edge bag filters provide advanced coating filtration solutions that set new industry standards, enhancing the quality and efficiency of your pulp and paper manufacturing processes.
- Machining Industry Efficiency: Elevate your machining operations with our superior bag filters, engineered for exceptional filtration of machine tool coolant circulation, cleaning fluids, and hydraulic and lubricating oils. Superior filtration for machine tool coolant circulation, cleaning fluids, as well as hydraulic and lubricating oils: Our bag filters offer unparalleled performance in the machining industry, ensuring that every drop of coolant, cleaning fluid, and oil is filtered with unmatched precision for optimal machine function and longevity.



Hebei SLOT Filter Technology Co., LtdHebei SLOT Filter Technology Co., Ltd. stands as a beacon of innovation and expertise in the realm of industrial precision filtration and state-of-the-art self-cleaning filtration systems. With a rich tapestry of experience spanning over a decade, we have established our reputation as leaders in innovative design and cutting-edge research and development. By leveraging the latest advancements in filtration technology, we provide a comprehensive suite of high-quality products tailored to deliver turnkey filtration solutions that cater to the diverse and unique needs of our valued customers.
SLOT is distinguished by holding the prestigious ISO9001 quality management system certification and certification from SGS, reflecting our steadfast commitment to superior standards. Our adherence to both global benchmarks and niche-specific regulations ensures that our product designs and manufacturing are precisely aligned with client specifications. Our mission is to engineer filtration equipment and components that not only meet but exceed expectations in terms of high performance and exemplary quality.
Our SLOT automatic self-cleaning filter systems are the industry standard across a multitude of sectors, including petrochemicals, fine chemicals, energy and power, water treatment, automotive manufacturing, food and beverage, and metal processing. We have cultivated strong, lasting alliances with a wide array of esteemed industrial giants both domestically and internationally, solidifying our position as a trusted partner in the industry.
Renowned for outstanding filter performance, cutting-edge manufacturing prowess, and unwavering professional service, SLOT is synonymous with unparalleled excellence. For those in pursuit of top-tier filter system performance, uncompromising quality, and exceptional service, SLOT is your unwavering ally for enduring success.

Quality Management: At Hebei Slot Filter Technology Co., Ltd., we are committed to delivering unparalleled quality. Our rigorous quality management protocols are integrated into every step of our production process, guaranteeing excellence with every product.
FAQ: Your Questions, Our Expertise. Navigate through our frequently asked questions to discover the insights and expertise that Hebei Slot Filter Technology Co., Ltd. proudly offers.
1. Who are we?
Based in Hebei, China, since 2014, we are a dynamic enterprise, spearheading innovation and exporting our state-of-the-art solutions to North America (40%), Western Europe (30%), South Asia (10%),
Africa (10%), and the Middle East (10%). Our dedicated team comprises between 11 to 50 skilled professionals driven by excellence.
2. How can we guarantee quality?
Quality assurance is our promise. We kickstart with a pre-production sample, a testament to our commitment to maintaining impeccable standards, ensuring your peace of mind.
Every shipment is a promise kept. Our meticulous final inspections guarantee that each product is synonymous with consistency and superior quality.
3. What can you buy from us?
Explore our diverse product range: precision-crafted Johnson Screen, highly durable Bridge Slotted Well Screens, and Sand Control Well Screens, all engineered for excellence.Discover our Gravel Pre-pack Screen, innovative Pipe-based screens, robust Perforated Pipes, and premium API/5CT Casing and Tubing, all designed with cutting-edge technology.
4. Why should you buy from us, not from other suppliers?
1. Tailored Excellence: We offer comprehensive OEM & ODM support, ensuring products are perfectly aligned with your specific needs.
2. Innovation at Your Fingertips: Our expert team aids in designing and developing custom drawings, transforming your vision into reality.
3. Continuous Innovation: With a professional R&D team, we innovate relentlessly, offering you cutting-edge solutions that stand out.
5. What services can we provide?
Flexible Delivery Terms: Choose from FOB, CFR, CIF, EXW, FAS, CIP, FCA, CPT, DEQ, DDP, DDU, Express Delivery, DAF, DES, tailored to your needs.
Diverse Payment Options: We accept USD, EUR, JPY, CAD, AUD, HKD, GBP, CNY, CHF, offering you flexibility and convenience.
Payment Type Flexibility: Opt for T/T, L/C, D/P D/A, MoneyGram, Credit Card, PayPal, Western Union, Cash, Escrow, to suit your financial preferences.
Multilingual Communication: Connect with ease in English, Chinese, Spanish, Japanese, Portuguese, German, Arabic, French, Russian, Korean, Hindi, and Italian.
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