Introducing the Quick Open Series: Immerse yourself in the pinnacle of cutting-edge engineering with our exceptional multi-bag filter housings. Featuring a state-of-the-art self-balancing V-clamp locking mechanism, this series sets a new standard in design innovation, delivering unparalleled ease and efficiency with its effortlessly smooth single-handed operation. Perfectly tailored for high-flow applications, this is the ultimate choice for those who demand efficiency and user-friendliness in perfect harmony. Crafted with precision for environments where frequent element replacements are essential, this sophisticated system is engineered to significantly minimize downtime, thereby dramatically reducing operating costs. This guarantees an uninterrupted batch processing journey, offering the perfect synergy of heightened efficiency and cost-effectiveness, ensuring your operations stay ahead of the curve.
Safety and efficiency are reimagined with our fully interlocked pressure release mechanism, providing peace of mind in every situation. The robust, corrosion-resistant V-clamp construction, combined with a unique proprietary screw-drive mechanism, assures years of reliable service, cementing its status as an indispensable tool for users in diverse industries.
Tailor your filtration experience with our selection of precise, durable filter-bag materials, each designed to cater to specific requirements:
PP (Polypropylene): Serving a rating of 1-200µm, this adaptable material withstands temperatures as high as 70°C, making it versatile for a broad range of settings and applications.
PE (Polyester): Offering a robust range of 1-200µm, this material withstands temperatures up to 120°C, positioning it as the ideal choice for more demanding and rigorous applications.
Nylon: With an impressive range of 25-800µm and the capability to withstand high temperatures up to 150°C, this material is perfectly suited for challenging and rigorous environments.
Unveil the cutting-edge capabilities of our Stainless Steel Multi-bag Filter Machine, meticulously crafted for unmatched excellence and precision. 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, we offer a diverse and comprehensive array of options tailored to meet an extensive variety of filtration needs.
The multi-bag filter system represents a pinnacle in state-of-the-art engineering, designed to refine the filtration process with unmatched precision and efficiency. At the heart of this innovation is its cleverly positioned inlet, placed just beneath the filter bags. This design ensures that the filter medium glides effortlessly into the system, ascending gracefully to the upper chamber. From this vantage point, it begins a carefully guided descent, seamlessly navigating through the filter bags. This refined mechanism guarantees the effective capture of impurities, releasing only the most pristine filtrate with unparalleled finesse. Discover the ultimate in clean filtration with our cutting-edge design, where purity meets performance.
For optimal filtration efficiency, vigilant oversight of the filter bags is imperative. As impurities build up, forming dense filter cakes and causing a differential pressure of 0.14-0.17 MPa, it becomes clear that bag replacement is crucial. During this pivotal maintenance stage, it is vital to ensure the system is safely shut down, the pressure relief valve is activated, and the filter cover is removed with precision. After fitting new bags, the system can resume its operation seamlessly. Our filter bags are not only ingeniously designed for easy cleaning and reuse, which supports sustainability, but also require replacement when noticeably damaged to ensure uninterrupted performance and reliability. This maintenance routine is essential for sustaining both the efficiency and the longevity 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
Experience the pinnacle of engineering with our multi-bag filter system, which features a revolutionary quick-opening flange ring that is masterfully secured by bolt fastening. This design provides extraordinary pressure resistance, setting industry standards. The advanced booster spring mechanism guarantees operations are executed with minimal effort, ensuring hassle-free and frequent filter bag changes. This innovation not only slashes downtime dramatically but also supercharges productivity, reduces worker fatigue, and elevates operational efficiency to new heights.
2. REVOLUTIONARY SPRING-BALANCE MECHANISM
Introducing our groundbreaking spring-balance mechanism, designed for effortless and efficient operation. The upper cover can be smoothly adjusted from 0 to 105° as needed, thanks to its robust yet elegant support structure. The cleverly designed compact clamshell mechanism ensures no liquid spills during lid opening, maximizing your workspace efficiency and maintaining cleanliness.
3. ESSENTIAL CORE OF THE BAG FILTER SYSTEM
At the heart of our bag filter system lies a cutting-edge compression spring pressure piece, delivering an impeccable 360° seal with the filter bag to prevent any side leakage. The formidable filter bag is constructed to support a heavy-duty flower plate, withstanding higher pressures and minimizing pressure loss, thereby enhancing your filtration performance. We offer a spectrum of customization options, catering to configurations from 2 to 24 bags, precisely tailored to meet your specific requirements.
Simplify your filter bag changes with our innovative spring locking device, ensuring rapid and effortless maintenance.
Our expertly designed basket gasket guarantees absolute leakage prevention, securing system integrity.
4. CUSTOMIZABLE INLET AND OUTLET DIRECTION
Our product offers customizable inlet and outlet directions, allowing you to tailor the setup to fit your unique installation and usage needs. Additionally, the flange diameter can be adjusted between DN25 to DN250, ensuring seamless compatibility and integration with your existing systems.
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. Paint and Ink Filtration Excellence.
- Oil & Gas Sector Innovations. Reliable solutions for produced water filtration, and well injection water purification.
- Food & Beverage Industry Solutions. Expert filtration for beer and wine production, juice concentrate clarification, and the pristine processing of soft drinks and bottled water.
- Automotive Manufacturing Precision. Enhanced automotive spray coating pretreatment, electrophoretic paint processing, as well as finish and primer filtration. Also, impeccable filtration for parts cleaning fluids.
- Pulp & Paper Industry Applications. Advanced coating filtration solutions.
- Machining Industry Efficiency. Superior filtration for machine tool coolant circulation, cleaning fluids, as well as hydraulic and lubricating oils.



Hebei SLOT Filter Technology Co., LtdHebei SLOT Filter Technology Co., Ltd. emerges as a luminary of innovation and mastery in the ever-evolving realm of industrial precision filtration and self-cleaning filtration solutions. With an illustrious history exceeding ten years, our company showcases unparalleled proficiency in design and research and development. By harnessing cutting-edge filtration technologies, we present a bountiful selection of top-tier product resources, delivering holistic, turnkey solutions that adeptly fulfill the diverse needs of our esteemed clientele.
SLOT holds the esteemed ISO9001 quality management system certification with pride and has garnered accolades from SGS, underscoring our unwavering dedication to excellence. We rigorously adhere to global standards and industry-specific regulations, tailoring our product designs and manufacturing processes to meet bespoke client requirements. Our fervor is in crafting filtration equipment and components that epitomize remarkable performance and exceptional quality.
Our SLOT automatic self-cleaning filter systems enjoy preference across a broad spectrum of industries, including petrochemicals, refined chemicals, energy and power sectors, water treatment, automotive production, food and beverage, and metal processing. We have fostered robust and lasting partnerships with an array of distinguished industrial enterprises both domestically and globally.
Celebrated for our extraordinary product filter performance, state-of-the-art manufacturing prowess, and committed professional services, SLOT is synonymous with excellence. For those seeking unrivaled filter system performance, uncompromised quality, and extraordinary service, SLOT stands as your reliable partner poised for a long-term collaboration.

Quality Management
FAQ
1. Who are we?
Founded in 2014 in the industrious region of Hebei, China, we are Hebei Slot Filter Technology Co., Ltd., a pioneer in innovative filtration solutions. We proudly deliver our state-of-the-art products to North America (40%), Western Europe (30%), South Asia (10%),
Africa (10%), and the Middle East (10%). Our dynamic team, composed of 11 to 50 exceptional professionals, is ardently dedicated to upholding the highest standards of excellence.
2. How can we guarantee quality?
Our steadfast commitment to quality begins with providing a pre-production sample to ensure all standards are met before we embark on full-scale production.
Every shipment undergoes thorough final inspections, executed with precision, to guarantee flawless quality and uniformity in every product.
3. What can you buy from us?
Discover our extensive array of meticulously crafted products, including the highly precise Johnson Screen, robust Bridge Slotted Well Screens, and Sand Control Well Screens, all enhanced by GravelPre-pack Screen, advanced Pipe-based screens, durable Perforated Pipes, and top-tier API/5CT Casing and Tubing.
4. Why should you buy from us, not from other suppliers?
1. We deliver comprehensive OEM & ODM solutions, tailoring products to perfectly suit your specific demands.
2. Our skilled team facilitates the custom design and development of unique drawings, bringing your concepts to life.
3. With the support of our trailblazing R&D team, we lead the way in offering groundbreaking solutions.
5. What services can we provide?
Choose from our flexible delivery options, including: FOB, CFR, CIF, EXW, FAS, CIP, FCA, CPT, DEQ, DDP, DDU, Express Delivery, DAF, DES;
We welcome a variety of payment currencies such as USD, EUR, JPY, CAD, AUD, HKD, GBP, CNY, CHF;
To enhance convenience, we support diverse payment methods: T/T, L/C, D/P D/A, MoneyGram, Credit Card, PayPal, Western Union, Cash, Escrow;
Communicate effortlessly with us in a spectrum of languages: English, Chinese, Spanish, Japanese, Portuguese, German, Arabic, French, Russian, Korean, Hindi, and Italian.
Excited to join us as a local market agent? Reach out to us, and together we'll explore exhilarating opportunities.