Introducing the Quick Open Series: Immerse yourself in the pinnacle of engineering excellence with our groundbreaking multi-bag filter housings. Featuring a state-of-the-art, self-balancing V-clamp locking mechanism, this series marks a revolutionary leap in design. It offers unparalleled ease with its intuitive, single-handed operation. Perfectly tailored for high-flow applications, this is the ultimate choice for those seeking unmatched efficiency and effortless usability. Meticulously crafted for scenarios demanding frequent element replacements, this sophisticated system is engineered to minimize downtime. By doing so, it dramatically reduces operating costs, ensuring a seamless and uninterrupted batch processing journey. Revel in the perfect harmony of efficiency and cost-effectiveness, designed to keep your operations running smoothly and economically.
Safety and efficiency reach new heights with our fully interlocked pressure release mechanism, delivering peace of mind in every scenario. The robust, corrosion-resistant V-clamp construction, coupled with a proprietary screw-drive mechanism, assures years of steadfast service. This solidifies its status as an indispensable tool for discerning users.
Customize your filtration journey with our range of precise and durable filter-bag materials, each expertly tailored to meet your specific needs:
PP (Polypropylene): Rated 1-200µm, this versatile material withstands temperatures up to 70°C, making it adaptable and reliable across a multitude of settings and applications.
PE (Polyester): With a robust range of 1-200µm, this material can endure temperatures up to 120°C, making it the ideal choice for more rigorous and demanding applications, where resilience is key.
Nylon: Showcasing an impressive range of 25-800µm and a high-temperature tolerance up to 150°C, this material is perfect for confronting challenging and strenuous environments.
Discover the cutting-edge capabilities of our Stainless Steel Multi-bag Filter Machine, meticulously engineered for excellence and precision, setting new standards in the industry. 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 array of options tailored to meet a plethora of filtration needs, ensuring versatility and adaptability.
The multi bag filter system is a marvel of innovative engineering, meticulously crafted to revolutionize the filtration process with unparalleled precision. This state-of-the-art system showcases a strategically positioned inlet beneath the filter bags, allowing the filter medium to glide in effortlessly. With elegance, it ascends to the upper chamber of the housing, before embarking on a carefully orchestrated descent to navigate through the filter bags flawlessly. This brilliant design effectively captures impurities, ensuring that only the most pristine filtrate exits the system with unparalleled grace and efficiency. Experience the pinnacle of clean filtration with our advanced technology.
To maintain top-notch filtration efficiency, vigilant monitoring of the filter bags is crucial. As impurities accumulate, a dense layer, known as filter cake, forms, causing a differential pressure of 0.14-0.17 MPa, signaling the need for bag replacement. During this essential maintenance phase, meticulously ensure the system is properly shut down, open the pressure relief valve, and carefully remove the filter cover. Installing new bags allows the system to resume its seamless operation. Impressively, our filter bags can be cleaned and reused, contributing to sustainability. However, for continuous performance and reliability, replace them if significantly damaged. This maintenance cycle is essential for ensuring efficiency and longevity in your filtration operations.
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 innovative multi-bag filter system features a state-of-the-art quick-opening flange ring, meticulously secured with bolt fastening. This system offers exceptional pressure resistance, ensuring reliable and robust performance. The integrated booster spring mechanism guarantees smooth and effortless operation, making it the ideal solution for frequent filter bag changes. This cutting-edge design significantly reduces downtime, vastly enhancing productivity while alleviating worker strain and boosting overall operational efficiency.
2. REVOLUTIONARY SPRING-BALANCE MECHANISM
Our groundbreaking spring-balance mechanism facilitates seamless and labor-efficient operation of the upper cover, which can be adjusted from 0 to 105° according to your specific needs. This sturdy yet straightforward support structure, combined with a compact clamshell design, effectively prevents liquid spillage when the lid is opened, thereby optimizing space utilization and enhancing operational convenience.
3. ESSENTIAL CORE OF THE BAG FILTER SYSTEM
Our cutting-edge compression spring pressure piece achieves a perfect 360° seal with the filter bag, effectively preventing any side leakage. The robust filter bag is engineered to support the heavy-duty flower plate, allowing it to withstand greater pressure and reduce pressure loss, thus enhancing filtration performance. We offer versatile customization options, enabling a wide range of customer flow configurations from 2 to 24 bags, tailored precisely to meet your unique requirements.
Effortless filter bag changes with a spring locking device
Basket gasket ensures complete leakage prevention
4. CUSTOMIZABLE INLET AND OUTLET DIRECTION
We provide comprehensive customizable options for the inlet and outlet directions to perfectly align with your installation requirements and usage preferences. The flange diameter is adjustable, ranging from DN25 to DN250, allowing for seamless integration with your existing system and ensuring optimal performance.
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. Experience reliable solutions for produced water filtration and well injection water purification, ensuring efficiency and consistency in the oil & gas sector.
- Food & Beverage Industry Solutions. Expert filtration tailored for beer and wine production, juice concentrate clarification, and the pristine processing of soft drinks and bottled water, ensuring utmost purity and taste.
- Automotive Manufacturing Precision. Experience enhanced automotive spray coating pretreatment, electrophoretic paint processing, as well as finish and primer filtration. Our system also offers impeccable filtration for parts cleaning fluids, ensuring top-notch quality.
- Pulp & Paper Industry Applications. Employ our advanced coating filtration solutions to enhance the quality and efficiency of pulp & paper production processes.
- Machining Industry Efficiency. Our filters offer superior filtration for machine tool coolant circulation, cleaning fluids, as well as hydraulic and lubricating oils, driving efficiency and effectiveness in the machining industry.



Hebei SLOT Filter Technology Co., LtdHebei SLOT Filter Technology Co., Ltd. is a hallmark of groundbreaking innovation and unrivaled expertise in the ever-evolving realm of industrial precision filtration and self-cleaning filtration solutions. With a distinguished legacy stretching beyond a decade, we boast unparalleled prowess in design and R&D. By harnessing cutting-edge filtration technologies, we present a vast spectrum of elite product offerings, delivering all-encompassing, turnkey filtration solutions that cater to the diverse needs of our esteemed clientele.
SLOT proudly maintains the esteemed ISO9001 quality management system certification and has been recognized by SGS, underscoring our unwavering dedication to excellence. We diligently comply with both global standards and niche industry regulations, tailoring our product designs and manufacturing processes to fulfill unique client requirements. Our passion fuels the creation of filtration equipment and components that set benchmarks in outstanding performance and exceptional quality.
Our cutting-edge SLOT automatic self-cleaning filter systems are the top choice across numerous industries, including petrochemicals, fine chemicals, energy and power sectors, water treatment, automotive manufacturing, food and beverage, and metal processing. We have forged solid and lasting alliances with a host of prestigious industrial enterprises both domestically and internationally.
Celebrated for our remarkable product filter performance, state-of-the-art manufacturing prowess, and unwavering professional services, SLOT is synonymous with unparalleled excellence. For those seeking superior filter system performance, uncompromising quality, and exceptional service, SLOT stands as your reliable partner for the long haul.

Quality Management
FAQ
1. Who are we?
Founded in 2014 in Hebei, China, we are Hebei Slot Filter Technology Co., Ltd., a trailblazer in cutting-edge solutions, propelling our innovative products to North America (40%), Western Europe (30%), South Asia (10%),
Africa (10%), and the Middle East (10%). Our agile team, comprising 11 to 50 talented professionals, is passionately committed to excellence.
2. How can we guarantee quality?
We pledge unwavering quality by supplying a pre-production sample to validate standards before commencing full-scale production.
Rigorous final inspections are meticulously conducted prior to every shipment, ensuring impeccable quality and consistency.
3. What can you buy from us?
Explore our extensive range of finely engineered products including the precision Johnson Screen, ultra-durable Bridge Slotted Well Screens, and Sand Control Well Screens, complemented by GravelPre-pack Screen, cutting-edge Pipe-based screens, resilient Perforated Pipes, and premium API/5CT Casing and Tubing.
4. Why should you buy from us, not from other suppliers?
1. We provide all-encompassing OEM & ODM solutions, customizing products to meet your unique requirements.
2. Our adept team aids in the bespoke design and development of custom drawings, actualizing your ideas.
3. Empowered by our innovative R&D team, we are at the forefront of delivering pioneering solutions.
5. What services can we provide?
We offer adaptable delivery options such as: FOB, CFR, CIF, EXW, FAS, CIP, FCA, CPT, DEQ, DDP, DDU, Express Delivery, DAF, DES;
We accept an array of payment currencies including USD, EUR, JPY, CAD, AUD, HKD, GBP, CNY, CHF;
For 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;
Communicate with us seamlessly in a multitude of languages: English, Chinese, Spanish, Japanese, Portuguese, German, Arabic, French, Russian, Korean, Hindi, and Italian.
Eager to become our local market agent? Contact us, and together we'll discover thrilling opportunities.