Quick Open series multi-bag filter housings feature a self-balancing V-clamp locking mechanism, a break-through from conventional designs. Its single-handed, user-friendly operation makes this feature an ideal choice for applications with high flow rates
requiring frequent element change-outs. Minimal downtime reduces operating costs and smoothen batch processes.
Efficiency is highly improved by a fully-interlocked pressure release which ensures safety in all conditions. With its rugged, corrosion-free V-clamp and proprietary screw-drive mechanism, the housing provides users with years of service.
Elevate your filtration experience with our extensive selection of precise and durable filter-bag materials, each meticulously engineered to meet specific demands:
PP (Polypropylene): Ideally rated at 1-200µm, this adaptable material withstands temperatures up to 70°C, proving versatile across a multitude of settings and applications.
PE (Polyester): This durable material offers an extensive range of 1-200µm and can endure temperatures reaching 120°C, making it well-suited for the most rigorous and demanding applications.
Nylon: Demonstrating an impressive range of 25-800µm, with remarkable high-temperature resistance up to 150°C, this material is tailored for the most challenging and strenuous environments.
Discover the state-of-the-art potential of our Stainless Steel Multi-bag Filter Machine, a paragon of excellence and precision engineering. Explore our Filter-Bag Numbers alongside their Detailed Specifications: 1#: Dimensions are 180mmD x 410mmL; 2#: Dimensions are 180mmD x 810mmL; 3#: Dimensions are 102mmD x 210mmL; 4#: Dimensions are 102mmD x 380mmL. Our diverse selection caters to an extensive range of filtration requirements, providing tailored solutions for every need.

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 boasts a quick-opening flange ring, expertly secured with robust bolt fastening. This design ensures unparalleled pressure resistance, delivering steadfast reliability and performance. The innovative booster spring mechanism facilitates effortless operation, making frequent filter bag changes a breeze. Experience a dramatic reduction in downtime, substantial productivity enhancements, minimized worker fatigue, and a significant uplift in operational efficiency with this meticulously engineered system.
2. REVOLUTIONARY SPRING-BALANCE MECHANISM
Discover the brilliance of our revolutionary spring-balance mechanism, providing seamless and labor-saving operation of the upper cover. With smooth adjustability from 0 to 105°, it supports a sleek, clamshell design that ensures zero liquid spills upon opening. This efficient structure optimizes spatial utilization and streamlines your workflow, maximizing every inch of your operational space.
3. ESSENTIAL CORE OF THE BAG FILTER SYSTEM
Our advanced compression spring pressure piece ensures a flawless 360° seal with the filter bag, completely eliminating side leakage. The reinforced filter bag is designed to support the durable flower plate, capable of withstanding higher pressures while minimizing pressure loss, thereby enhancing filtration efficacy. With a range of customization options, we provide customer flow configurations from 2 to 24 bags, precisely engineered to meet your specific needs.
Experience smooth, effortless filter bag changes with our cutting-edge spring locking device, ensuring a seamless workflow.
Our basket gasket is crafted to guarantee absolute leakage prevention, delivering unwavering and dependable performance.
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, guarantees perfect integration with your existing system, offering unparalleled adaptability and flexibility.
Our expertly engineered bag filters are a testament to the pinnacle of precision engineering. Crafted with meticulous attention, they efficiently extract even the most minuscule trace impurities from liquids. These indispensable filters serve as the cornerstone across a spectrum of industries, offering unmatched precision and reliability that never falters.
- Refined Chemicals Sector: Unleashing the full potential of high-precision filtration to elevate the quality and purity of chemical products. Paint and Ink Filtration Excellence: Ensuring vibrant colors and flawless finishes, our filters set the standard in paint and ink filtration.
- Oil & Gas Sector Innovations: Leading the frontier with state-of-the-art filtration solutions that elevate efficiency and safety in the oil and gas sector. Providing reliable solutions for the complex challenges of produced water filtration and well injection water purification, ensuring optimal performance and environmental compliance.
- Food & Beverage Industry Solutions: Elevating quality and safety with tailored filtration for diverse food and beverage processing needs. Offering expert filtration tailored specifically for beer and wine production, juice concentrate clarification, and ensuring pristine processing of soft drinks and bottled water, maintaining exceptional quality and taste.
- Automotive Manufacturing Precision: Driving excellence with enhanced filtration solutions for spray coating pretreatment, electrophoretic paint processing, and ensuring a superior finish and primer filtration. Delivers enhanced performance in automotive spray coating pretreatment, electrophoretic paint processing, and superior finish and primer filtration. Our solutions also ensure impeccable filtration for parts cleaning fluids, optimizing performance and precision in every application.
- Pulp & Paper Industry Applications: Delivering advanced coating filtration solutions designed for the unique and demanding needs of the pulp and paper industry. Providing advanced coating filtration solutions tailored to the unique demands of the pulp and paper industry, ensuring smooth and flawless production processes.
- Machining Industry Efficiency: Leading the way in enhancing tool performance and longevity through superior filtration technology. 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, boosting overall machining productivity.



Hebei SLOT Filter Technology Co., LtdHebei SLOT Filter Technology Co., Ltd. is a luminary in the dynamic realm of industrial precision filtration and self-cleaning filtration solutions. With an illustrious history spanning over a decade, our company exemplifies exceptional expertise in design and research & development. Leveraging advanced filtration technology, we offer a broad spectrum of high-quality product resources. Our solutions are all-encompassing, delivering turnkey filtration systems tailored to satisfy the diverse and sophisticated requirements of our valued clients.
At SLOT, we proudly uphold the esteemed ISO9001 quality management system certification and have received commendation from SGS, highlighting our steadfast commitment to excellence. We meticulously comply with international standards and specific industry regulations, custom-crafting our product designs and manufacturing processes to cater to each client's unique specifications. Our dedication is channeled into producing filtration equipment and components that embody exceptional performance and unparalleled quality.
Our SLOT automatic self-cleaning filter systems are the premier choice across a diverse range of industries. These span petrochemicals, fine chemicals, energy and power sectors, water treatment, automotive manufacturing, food and beverage, and metal processing. We have cultivated robust and lasting alliances with numerous prestigious industrial enterprises, both domestically and on the global stage.
Celebrated for our outstanding product filter performance, cutting-edge manufacturing capabilities, and committed professional services, SLOT is synonymous with excellence. For those in search of top-tier filter system performance, impeccable quality, and exemplary service, SLOT is your dedicated partner for enduring 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.