Our Quick Open series multi-bag filter housings boast a revolutionary self-balancing V-clamp locking mechanism, a sophisticated innovation that surpasses conventional design. This intuitive single-handed operation offers effortless use, making it the perfect solution for high flow rate applications that demand frequent element changes.
Experience minimal downtime as our design significantly reduces operating costs while ensuring batch processes run seamlessly and efficiently.
Safety and efficiency are enhanced by our fully-interlocked pressure release, ensuring complete security under any condition. Built with durability in mind, our corrosion-resistant V-clamp and unique screw-drive mechanism guarantee users a long-lasting service life.
Transform your filtration process with our broad array of precise and resilient filter-bag materials, each crafted to meet the most specific and demanding requirements:
PP (Polypropylene): Rated for 1-200µm, this versatile material withstands temperatures up to 70°C, aptly serving a wide array of settings and intricate applications.
PE (Polyester): With an extensive range of 1-200µm, this robust material endures temperatures up to 120°C, perfect for the most challenging and rigorous applications.
Nylon: Offering a remarkable range of 25-800µm, coupled with outstanding high-temperature resistance up to 150°C, this is the material of choice for the most demanding and harsh environments.
Unveil the cutting-edge capabilities of our Stainless Steel Multi-bag Filter Machine, a true embodiment of excellence and precision craftsmanship. Delve into our Filter-Bag Numbers and 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. This diverse selection is designed to meet a comprehensive range of filtration needs, delivering tailored solutions for every specific requirement.

The multi bag filter system stands as a hallmark of advanced engineering, masterfully crafted to transform your filtration experience with exceptional precision. With an ingeniously positioned inlet beneath the filter bags, it elegantly guides the filter medium upwards into the housing's upper chamber. From this strategic point, the system orchestrates a flawless downward flow, directing it through the filter bags with superb accuracy. This sophisticated mechanism adeptly seizes impurities, ensuring the delivery of the purest filtrate with remarkable grace and efficiency. Enter a new era of pristine filtration with our state-of-the-art design.
To uphold top-tier filtration performance, vigilant monitoring of the filter bags is paramount. As impurities accumulate and dense filter cakes form, generating a differential pressure of 0.14-0.17 MPa, it becomes apparent that bag replacement is necessary. During this pivotal maintenance phase, ensure the system is gently shut down, the pressure relief valve is carefully opened, and the filter cover is meticulously removed. Once new bags are installed, the system is poised to recommence its flawless operation. Our filter bags, crafted for eco-friendliness, can be cleansed and reused, but should be replaced if significantly compromised to maintain consistent performance and reliability. This maintenance routine is crucial for efficiency and prolonging the operational lifespan 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 features a revolutionary quick-opening flange ring, expertly secured with robust bolt fastening. This design ensures exceptional pressure resistance, delivering steadfast reliability and unparalleled performance. The ingenious booster spring mechanism makes operations effortlessly smooth, allowing for swift and easy filter bag changes. Experience a dramatic reduction in downtime, substantial productivity enhancements, minimized worker fatigue, and a significant boost in operational efficiency with this meticulously engineered system, designed to exceed your expectations.
2. REVOLUTIONARY SPRING-BALANCE MECHANISM
Discover the impeccable brilliance of our revolutionary spring-balance mechanism, offering 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, making sure everything works in perfect harmony.
3. ESSENTIAL CORE OF THE BAG FILTER SYSTEM
Our advanced compression spring pressure piece guarantees 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 wide range of customization options, we provide tailor-made customer flow configurations from 2 to 24 bags, precisely engineered to meet your specific needs with impeccable precision.
Experience smooth, effortless filter bag changes with our cutting-edge spring locking device, designed for seamless operation and impeccable workflow integration.
Our basket gasket is meticulously crafted to guarantee absolute leakage prevention, ensuring unwavering and dependable performance across all operations.
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 for optimal performance.
Our expertly engineered bag filters, a testament to precision engineering excellence, are crafted with meticulous attention to detail. These filters efficiently extract even the most minuscule trace impurities from liquids, serving as indispensable cornerstones across a vast array of industries. They offer unparalleled precision and reliability that never falters, making them the ultimate choice for high-performance filtration systems.
- Refined Chemicals Sector: Harness the full potential of our high-precision filtration solutions to significantly elevate the quality and purity of chemical products, setting new standards in the industry. Paint and Ink Filtration Excellence: Our filters redefine standards in paint and ink filtration, ensuring vibrant colors and flawless finishes that consistently impress.
- Oil & Gas Sector Innovations: Embark on a journey of innovation with our state-of-the-art filtration solutions, leading the frontier by enhancing efficiency and safety within the oil and gas sector. Providing unwavering reliability for the intricate challenges of produced water filtration and well injection water purification. Our solutions ensure optimal performance while adhering to environmental compliance.
- Food & Beverage Industry Solutions: Elevate quality and safety with our meticulously tailored filtration systems designed to meet the diverse processing needs of the food and beverage industry. We offer expert filtration solutions specifically tailored for beer and wine production, juice concentrate clarification, and pristine processing of soft drinks and bottled water, maintaining exceptional quality and taste throughout.
- Automotive Manufacturing Precision: Drive excellence with our enhanced filtration solutions for spray coating pretreatment, electrophoretic paint processing, and superior finish and primer filtration, ensuring an unparalleled finish. Our solutions deliver unmatched performance in automotive spray coating pretreatment and electrophoretic paint processing. We ensure a superior finish and primer filtration, as well as impeccable filtration for parts cleaning fluids, optimizing performance and precision in every application.
- Pulp & Paper Industry Applications: We provide cutting-edge coating filtration solutions specifically designed to meet the unique and demanding needs of the pulp and paper industry, ensuring seamless and flawless production processes. Offering advanced coating filtration solutions uniquely tailored to the pulp and paper industry's demands, our systems ensure smooth and flawless production, meeting the industry's high standards with ease.
- Machining Industry Efficiency: Lead the charge in boosting tool performance and longevity with our superior filtration technology, setting new benchmarks for efficiency. Our superior filtration technology enhances the efficiency and performance of machine tool coolant circulation, cleaning fluids, and the management of hydraulic and lubricating oils, significantly boosting overall machining productivity.



Hebei SLOT Filter Technology Co., LtdHebei SLOT Filter Technology Co., Ltd. stands as a beacon of innovation and excellence within the ever-evolving domain of industrial precision filtration and self-cleaning filtration solutions. With an illustrious legacy extending over a decade, we embody unparalleled expertise in cutting-edge design and research & development. By harnessing state-of-the-art filtration technology, we provide a comprehensive array of premium product resources. Our solutions are meticulously crafted, delivering complete, turnkey filtration systems that seamlessly meet the diverse and sophisticated demands of our esteemed clientele.
At SLOT, we take immense pride in our adherence to the prestigious ISO9001 quality management system certification, complemented by accolades from SGS, underscoring our unwavering commitment to excellence. We diligently align with international standards and specific industry regulations, custom-engineering our product designs and manufacturing processes to meet the unique specifications of every client. Our passion is directed towards producing filtration equipment and components that exemplify exceptional performance and unrivaled quality.
Our SLOT automatic self-cleaning filter systems are the preferred choice across a vast array of industries, including petrochemicals, fine chemicals, energy and power sectors, water treatment, automotive manufacturing, food and beverage, and metal processing. We have established robust and enduring partnerships with numerous prestigious industrial enterprises, both within our nation and across the globe.
Renowned for our exemplary product filter performance, innovative manufacturing prowess, and dedicated professional services, SLOT is synonymous with excellence. For those seeking superior filter system performance, unmatched quality, and outstanding service, SLOT is your steadfast partner for 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.