Our Quick Open series of multi-bag filter housings revolutionizes filtration technology with its innovative self-balancing V-clamp locking mechanism. This cutting-edge breakthrough departs from conventional approaches, offering unmatched efficiency and reliability. The intuitive, single-handed operation of our design elevates usability, making it the quintessential choice for high-flow applications. Its user-friendly nature ensures seamless element change-outs, even in the busiest industrial settings.
Experience minimal downtime that translates to reduced operating costs and seamless batch processes, ensuring your workflow remains uninterrupted and highly efficient.
Safety and efficiency are paramount with our fully-interlocked pressure release system, enhancing operational safety in every environment. This feature elevates your filtration system to a new level of reliability. Our housing's rugged, corrosion-free V-clamp and exclusive screw-drive mechanism promise years of consistent performance, offering a durable solution that stands the test of time.
Transform your filtration process with our vast array of precise and robust filter-bag materials. Each option is meticulously crafted to meet specific demands, ensuring optimal performance and satisfaction:
PP (Polypropylene): Engineered for versatility, this material is ideally rated at 1-200µm and withstands temperatures up to 70°C, making it perfect for diverse applications.
PE (Polyester): Built for durability, this material offers a range of 1-200µm and withstands temperatures up to 120°C, excelling in rigorous and demanding environments.
Nylon: With an impressive 25-800µm range and high-temperature resistance up to 150°C, this material is designed for the most challenging applications, ensuring resilience where it's needed most.
Unleash the cutting-edge potential of our Stainless Steel Multi-bag Filter Machine, a testament to excellence and precision engineering, setting new standards in filtration technology. Delve into our Filter-Bag Numbers and their Detailed Specifications, designed to meet a wide spectrum of filtration needs: 1#: Dimensions measure 180mmD x 410mmL; 2#: Dimensions are 180mmD x 810mmL; 3#: Dimensions stand at 102mmD x 210mmL; 4#: Dimensions are 102mmD x 380mmL. Our expansive selection ensures tailored solutions for all your filtration requirements.

The multi bag filter system is a masterpiece of advanced engineering, artfully crafted to transform the way we experience filtration with unmatched precision. This innovative system boasts a finely-tuned inlet strategically located beneath the filter bags, orchestrating a graceful ascent of the filter medium into the upper chamber of the housing. From this elevated position, it directs the flow downwards with extraordinary precision, expertly navigating through the filter bags to capture impurities with finesse. The result is a pure filtrate delivered with an elegance and efficiency that sets a new standard in filtration. Discover the pinnacle of pristine filtration with our state-of-the-art design.
To ensure optimal filtration performance, vigilant monitoring of the filter bags is of utmost importance. As impurities accumulate, forming dense filter cakes and causing a differential pressure between 0.14-0.17 MPa, it becomes clear that replacing the bags is critical. During this vital maintenance phase, the system should be carefully shut down, the pressure relief valve gently opened, and the filter cover delicately removed. After installing fresh bags, the system stands poised to resume its flawless operation. Our eco-friendly filter bags can be cleaned and reused but should be replaced if significantly degraded to maintain consistent performance and reliability. This maintenance cycle is crucial for efficiency and prolongs the operational longevity of your filtration endeavors.
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 designed with a quick-opening flange ring, meticulously secured with robust bolt fastening. This construction ensures unmatched pressure resistance, delivering consistent reliability and superior performance. The cutting-edge booster spring mechanism enables effortless operation, making frequent filter bag changes remarkably smooth. Experience a drastic reduction in downtime, significant productivity enhancements, reduced worker fatigue, and a marked increase in operational efficiency with this precisely engineered system.
2. REVOLUTIONARY SPRING-BALANCE MECHANISM
Discover the brilliance of our revolutionary spring-balance mechanism, which offers seamless and labor-saving operation of the upper cover. With smooth adjustability ranging from 0 to 105°, it incorporates a sleek, clamshell design ensuring zero liquid spills upon opening. This efficient structure optimizes spatial utilization and streamlines your workflow, maximizing the use of every inch of your operational space for enhanced efficiency.
3. ESSENTIAL CORE OF THE BAG FILTER SYSTEM
Our advanced compression spring pressure piece ensures a flawless 360° seal with the filter bag, effectively eliminating side leakage. Featuring a reinforced filter bag designed to support the durable flower plate, it withstands higher pressures while minimizing pressure loss, thereby enhancing filtration efficacy. With a versatile range of customization options, we provide flow configurations from 2 to 24 bags, expertly engineered to meet your specific needs, delivering peak performance tailored to your operation.
Experience smooth, effortless filter bag changes with our cutting-edge spring locking device, ensuring a seamless and streamlined workflow.
Our basket gasket is crafted to guarantee absolute leakage prevention, delivering unwavering and dependable performance with steadfast reliability.
4. CUSTOMIZABLE INLET AND OUTLET DIRECTION
We offer a diverse suite of customizable inlet and outlet direction options, ensuring precise alignment with your installation needs and user preferences. The versatile flange diameter, adjustable from DN25 to DN250, ensures perfect integration with your existing system, offering you unparalleled adaptability and flexibility for seamless system compatibility.
Our expertly engineered bag filters epitomize the pinnacle of precision engineering. Crafted with meticulous attention to detail, they excel at efficiently extracting even the most minuscule trace impurities from liquids. These indispensable filters are the backbone across a diverse array of industries, providing unmatched precision and unwavering reliability that never falters.
- Refined Chemicals Sector: Unleashing the full potential of high-precision filtration, we elevate the quality and purity of chemical products to new heights. Paint and Ink Filtration Excellence: Ensuring vibrant colors and flawless finishes, our filters set the benchmark in paint and ink filtration, fostering excellence in every hue and stroke.
- Oil & Gas Sector Innovations: Commanding the frontier with cutting-edge filtration solutions that redefine efficiency and safety standards in the oil and gas sector. Providing reliable solutions for the complex challenges of produced water filtration and well injection water purification, we ensure optimal performance and stringent environmental compliance.
- Food & Beverage Industry Solutions: Elevating quality and safety, we offer tailored filtration for diverse food and beverage processing needs, safeguarding taste and purity. Offering expert filtration precisely tailored for beer and wine production, juice concentrate clarification, and pristine processing of soft drinks and bottled water, maintaining exceptional quality and exquisite taste.
- Automotive Manufacturing Precision: Driving excellence with advanced filtration solutions for spray coating pretreatment, electrophoretic paint processing, and ensuring a superior finish and primer filtration. Delivering enhanced performance in automotive spray coating pretreatment, electrophoretic paint processing, and superior finish and primer filtration. Our solutions ensure impeccable filtration for parts cleaning fluids, optimizing performance and precision in every application.
- Pulp & Paper Industry Applications: Providing advanced coating filtration solutions meticulously crafted for the unique and demanding needs of the pulp and paper industry. Providing advanced coating filtration solutions tailored to the distinctive demands of the pulp and paper industry, ensuring smooth, seamless, and flawless production processes.
- Machining Industry Efficiency: Leading the way in enhancing tool performance and longevity through superior filtration technology, setting a new standard for efficiency. Delivering superior filtration to enhance 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 as a beacon in the dynamic world of industrial precision filtration and self-cleaning filtration solutions. With over a decade of illustrious history, our company showcases unparalleled expertise in design and research & development. By harnessing cutting-edge filtration technology, we provide an expansive array of high-quality products. Our comprehensive solutions deliver turnkey filtration systems meticulously tailored to meet the diverse and sophisticated needs of our esteemed clients.
At SLOT, we are proud to have achieved the prestigious ISO9001 quality management system certification, and have been lauded by SGS for our unwavering commitment to excellence. We diligently adhere to international standards and specific industry regulations, crafting our product designs and manufacturing processes to meet each client's unique requirements. Our relentless dedication results in filtration equipment and components that are distinguished by their outstanding performance and unparalleled quality.
Our SLOT automatic self-cleaning filter systems are the preferred selection across a wide array of industries, including petrochemicals, fine chemicals, energy and power, water treatment, automotive manufacturing, food and beverage, and metal processing. We have fostered strong and enduring partnerships with numerous prestigious industrial enterprises, both within our borders and globally.
Renowned for our exceptional product filter performance, state-of-the-art manufacturing capabilities, and dedicated professional services, SLOT epitomizes excellence. For those seeking unparalleled filter system performance, superior quality, and outstanding service, SLOT stands as your trusted partner in achieving lasting success.

Quality Management
FAQ
1. Who are we?
Founded in the dynamic heart of Hebei, China, in 2014, we are Hebei Slot Filter Technology Co., Ltd., a name synonymous with cutting-edge innovation. Our pioneering solutions resonate across North America (40%), Western Europe (30%), South Asia (10%),
Africa (10%), and the Middle East (10%). Our passionate team of 11 to 50 expert professionals is committed to excellence and achieving the extraordinary.
2. How can we guarantee quality?
Our unwavering commitment is to deliver unmatched quality. Before full production, we validate standards with sample evaluations to ensure flawless alignment.
Each shipment undergoes meticulous inspections, upholding our rigorous quality benchmarks and unmatched consistency with impeccable precision.
3. What can you buy from us?
Discover our expansive selection of expertly crafted products like the precision-engineered Johnson Screen, durable Bridge Slotted Well Screens, and Sand Control Well Screens, along with GravelPre-pack Screen, cutting-edge Pipe-based screens, robust Perforated Pipes, and premium API/5CT Casing and Tubing. Each product is designed to exceed performance expectations.
4. Why should you buy from us, not from other suppliers?
1. We offer a complete range 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 bespoke drawings.
3. Equipped with an advanced R&D team, we deliver cutting-edge solutions and set new industry standards.
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;
We accept a wide range of payment currencies such as USD, EUR, JPY, CAD, AUD, HKD, GBP, CNY, CHF, ensuring a seamless transaction process.
For maximum convenience, we support various payment methods: T/T, L/C, D/P D/A, MoneyGram, Credit Card, PayPal, Western Union, Cash, Escrow, offering you ultimate ease.
Communicate effortlessly with us in multiple languages: English, Chinese, Spanish, Japanese, Portuguese, German, Arabic, French, Russian, Korean, Hindi, and Italian.
Dreaming of becoming an agent in your local market? Contact us and explore thrilling opportunities together.