Discover the revolutionary Quick Open series multi-bag filter housings, featuring a self-balancing V-clamp locking mechanism. A breakthrough from traditional designs, this innovative feature offers seamless operation. With its single-handed, user-friendly operation, it becomes the ideal choice for applications demanding high flow rates and frequent element changes.
Experience minimal downtime, which not only reduces operating costs but also enhances the efficiency of your batch processes.
Efficiency reaches new heights with a fully-interlocked pressure release, ensuring safety across all conditions. Its robust, corrosion-free V-clamp and unique screw-drive mechanism promise years of unwavering service. The housing's exceptional durability and reliability transform it into an indispensable asset, delivering exceptional performance in every scenario.
Elevate your filtration experience with our extensive selection of precise and durable filter-bag materials, meticulously engineered to satisfy specific demands:
PP (Polypropylene): Rated at 1-200µm, this versatile material withstands temperatures up to 70°C, proving indispensable across diverse settings and applications.
PE (Polyester): A durable choice with a range of 1-200µm, enduring temperatures up to 120°C, making it well-suited for the most rigorous applications.
Nylon: With an impressive range of 25-800µm and exceptional high-temperature resistance up to 150°C, this material is crafted for the most challenging environments.
Discover the exceptional capabilities of our Stainless Steel Multi-bag Filter Machine, a hallmark of excellence and precision engineering. Explore our Filter-Bag Numbers with 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 a wide spectrum of filtration needs, offering tailored solutions for every requirement.

The multi bag filter system embodies the pinnacle of sophisticated engineering, thoughtfully crafted to transform the filtration process with unmatched precision and elegance. At its core, the system boasts an intelligently positioned inlet situated below the filter bags, guiding the filter medium with a gentle flow into the housing's upper chamber. From this elevated position, the medium is seamlessly channeled downwards, through the filter bags, with meticulous precision. This refined journey effectively captures impurities, delivering the purest filtrate with exceptional grace and efficiency. Elevate your filtration standards with our state-of-the-art design, setting a new benchmark for purity and performance.
To ensure optimal filtration performance, vigilant monitoring of the filter bags is vital. As impurities accumulate, forming dense filter cakes and resulting in a differential pressure of 0.14-0.17 MPa, it becomes apparent that bag replacement is necessary. During this essential maintenance phase, the system should be carefully shut down, the pressure relief valve gently opened, and the filter cover gracefully removed. Once new bags are in place, the system is poised to resume its flawless operation. Our filter bags are eco-friendly, allowing for cleaning and reuse, yet replacement is advisable if they become significantly impaired to maintain consistent performance and reliability. This maintenance routine is crucial to achieving efficiency and prolonged operational success in 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 cutting-edge quick-opening flange ring, meticulously secured with robust bolt fastening. This superior design ensures unmatched pressure resistance, offering steadfast reliability and exceptional performance. The innovative booster spring mechanism simplifies operation, making frequent filter bag changes effortlessly smooth. Experience a significant reduction in downtime, substantial productivity boosts, minimized worker fatigue, and a remarkable enhancement in operational efficiency with this meticulously and intelligently engineered system.
2. REVOLUTIONARY SPRING-BALANCE MECHANISM
Embrace the innovation of our revolutionary spring-balance mechanism, offering seamless and labor-saving operation of the upper cover. With smooth adjustability from 0 to 105°, it features 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 to its fullest potential.
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 crafted to support the durable flower plate, capable of enduring higher pressures while minimizing pressure loss, thus enhancing filtration efficacy. With an array of customization options, we offer customer flow configurations ranging from 2 to 24 bags, precisely engineered to cater to your specific requirements.
Experience effortless, smooth filter bag changes with our cutting-edge spring locking device, ensuring a seamless and efficient workflow.
Our expertly crafted basket gasket guarantees absolute leakage prevention, delivering unwavering and dependable performance.
4. CUSTOMIZABLE INLET AND OUTLET DIRECTION
We provide a comprehensive range of customizable inlet and outlet direction options, ensuring precise alignment with your installation requirements and user preferences. The versatile flange diameter, adjustable from DN25 to DN250, ensures perfect integration with your existing system, offering unparalleled adaptability and flexibility for any operational setup.
Our expertly engineered bag filters epitomize the zenith of precision engineering. With meticulous craft, they deftly extract even the tiniest trace of impurities from liquids. These essential filters are the backbone across a broad spectrum of industries, offering unparalleled precision and unwavering reliability.
- Refined Chemicals Sector: Harnessing the full potential of high-precision filtration to elevate the quality and purity of chemical products to new heights. Paint and Ink Filtration Excellence: Ensuring vivid colors and flawless finishes, our filters are the benchmark in paint and ink filtration.
- Oil & Gas Sector Innovations: Pioneering the frontier with cutting-edge filtration solutions, boosting efficiency and safety in the oil and gas industry. Delivering dependable solutions for the intricate challenges of produced water filtration and well injection water purification, ensuring optimal performance and strict environmental compliance.
- Food & Beverage Industry Solutions: Enhancing quality and safety with bespoke filtration for diverse food and beverage processing needs. Providing specialized filtration expertise for beer and wine production, juice concentrate clarification, and guaranteeing pristine processing of soft drinks and bottled water, maintaining exceptional quality and flavor.
- Automotive Manufacturing Precision: Driving excellence with superior filtration solutions for spray coating pretreatment, electrophoretic paint processing, ensuring a superior finish and primer filtration. Delivering heightened performance in automotive spray coating pretreatment, electrophoretic paint processing, and impeccable finish and primer filtration. Our solutions also guarantee flawless filtration for parts cleaning fluids, optimizing precision and performance in every application.
- Pulp & Paper Industry Applications: Offering advanced coating filtration solutions tailored to the unique and demanding needs of the pulp and paper industry. Providing sophisticated coating filtration solutions tailored to the unique demands of the pulp and paper industry, ensuring smooth and flawless production processes.
- Machining Industry Efficiency: Pioneering enhanced tool performance and longevity through superior filtration technology. Delivering exceptional filtration to boost the efficiency and performance of machine tool coolant circulation, cleaning fluids, and the proficient management of hydraulic and lubricating oils, enhancing overall machining productivity.



Hebei SLOT Filter Technology Co., LtdHebei SLOT Filter Technology Co., Ltd. stands as a beacon of innovation and mastery in the vibrant field of industrial precision filtration and self-cleaning filtration solutions. With a rich history that extends beyond a decade, our company is a paragon of design and R&D prowess. By harnessing cutting-edge filtration technology, we provide an extensive array of premium product resources. Our solutions are comprehensive, offering turnkey filtration systems meticulously crafted to fulfill the intricate and varied demands of our esteemed clients.
At SLOT, we take immense pride in upholding the prestigious ISO9001 quality management system certification and have earned accolades from SGS, showcasing our unwavering dedication to excellence. We scrupulously adhere to international standards and specific industry regulations, meticulously customizing our product designs and manufacturing processes to meet each client's distinct specifications. Our commitment is dedicated to producing filtration equipment and components with extraordinary performance and unmatched quality.
Our SLOT automatic self-cleaning filter systems are the top choice across a vast array of industries. These include petrochemicals, fine chemicals, energy and power sectors, water treatment, automotive manufacturing, food and beverage, and metal processing. We have forged strong and enduring partnerships with numerous esteemed industrial enterprises, both domestically and internationally.
Renowned for our exceptional product filter performance, state-of-the-art manufacturing prowess, and devoted professional services, SLOT is synonymous with superior excellence. For those seeking unrivaled filter system performance, impeccable quality, and outstanding service, SLOT is your trusted partner for enduring success.

Quality Management
FAQ
1. Who are we?
Founded in the vibrant and industrious heart of Hebei, China, in 2014, we are Hebei Slot Filter Technology Co., Ltd. We are a beacon of cutting-edge innovation, crafting pioneering solutions that resonate around the globe. Our influence spans North America (40%), Western Europe (30%), South Asia (10%),
Africa (10%), and the Middle East (10%). With a dedicated team of 11 to 50 expert professionals, we are driven by a passion for excellence and achieving the extraordinary in our industry.
2. How can we guarantee quality?
Our steadfast commitment is to deliver unparalleled quality. We undertake sample evaluations before full production to ensure flawless alignment with the highest standards.
Each shipment undergoes meticulous inspections, steadfastly upholding our rigorous quality standards and unmatched consistency with impeccable precision.
3. What can you buy from us?
Explore our expansive selection of expertly crafted products, including the precision-engineered Johnson Screen, durable Bridge Slotted Well Screens, and Sand Control Well Screens, alongside GravelPre-pack Screen, innovative Pipe-based screens, robust Perforated Pipes, and premium API/5CT Casing and Tubing. Each product is meticulously designed to exceed performance expectations.
4. Why should you buy from us, not from other suppliers?
1. We provide a comprehensive range of OEM & ODM solutions, seamlessly tailoring products to meet your unique specifications.
2. Our expert team excels in custom design and development, transforming your concepts into reality with bespoke drawings.
3. With an advanced R&D team, we deliver cutting-edge solutions and set new benchmarks in the industry.
5. What services can we provide?
We offer versatile delivery options including: FOB, CFR, CIF, EXW, FAS, CIP, FCA, CPT, DEQ, DDP, DDU, Express Delivery, DAF, DES;
We accept a broad range of payment currencies such as USD, EUR, JPY, CAD, AUD, HKD, GBP, CNY, CHF, ensuring a seamless transaction experience.
For utmost 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.
Dream of becoming an agent in your local market? Reach out to us and explore thrilling opportunities together.