Introducing our Quick Open series multi-bag filter housings, which are revolutionized by a pioneering self-balancing V-clamp locking mechanism. This cutting-edge innovation marks a significant departure from conventional designs. With its effortless, single-handed, and user-friendly operation, this feature stands out as the perfect choice for applications that demand high flow rates and require frequent element change-outs.
By minimizing downtime, it effectively reduces operating costs and ensures seamless batch processes, offering unparalleled efficiency.
The efficiency of our filter housings is further enhanced by a fully-interlocked pressure release system, guaranteeing safety across all conditions and environments. Crafted with a robust, corrosion-free V-clamp alongside a proprietary screw-drive mechanism, this housing ensures reliable service for users over many years.
Elevate your filtration experience with our vast array of precise and durable filter-bag materials, each meticulously engineered to meet even the most specific demands with exceptional performance:
PP (Polypropylene): This adaptable material, ideally rated at 1-200µm, can withstand temperatures up to 70°C, proving itself versatile across a multitude of settings and applications, ensuring reliability and performance.
PE (Polyester): Known for its durability, this material offers an extensive range of 1-200µm and can withstand temperatures reaching 120°C, making it ideal for the most rigorous and demanding applications.
Nylon: Featuring an impressive range of 25-800µm and remarkable high-temperature resistance up to 150°C, this material is expertly tailored to meet the challenges of the most strenuous and demanding environments.
Discover the state-of-the-art capabilities of our Stainless Steel Multi-bag Filter Machine, a true paragon of excellence and precision engineering designed to elevate your filtration standards. Explore our comprehensive Filter-Bag Numbers along with their Detailed Specifications, designed to meet diverse filtration demands: 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, offering tailored solutions for every need.

The multi bag filter system is the pinnacle of advanced engineering, meticulously crafted to transform the filtration process with unmatched precision and innovation. Featuring a carefully positioned inlet directly below the filter bags, this system gracefully guides the filter medium upwards into the upper chamber of the housing. From this elevated position, the flow is elegantly directed downwards with flawless accuracy, seamlessly channeling through the filter bags. This sophisticated mechanism skillfully captures impurities, ensuring the delivery of the purest filtrate with exceptional grace and efficiency. Discover the ultimate standard of pristine filtration with our state-of-the-art design, setting new benchmarks in filtration technology.
To ensure optimal filtration performance, it is crucial to meticulously monitor the filter bags. As impurities accumulate and form dense filter cakes, causing a differential pressure of 0.14-0.17 MPa, it becomes apparent that bag replacement is necessary. During this vital maintenance phase, it is important to carefully shut down the system, gently open the pressure relief valve, and delicately remove the filter cover. Once new bags are installed, the system is poised to resume its flawless operation. Our filter bags are designed for eco-friendliness and can be cleaned and reused, but should be replaced if significantly compromised to maintain consistent performance and reliability. This maintenance cycle is fundamental to achieving efficiency and extending 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: Strength and Security
Our cutting-edge multi-bag filter system is designed with a quick-opening flange ring and robust bolt fastening, ensuring superior pressure resistance. Experience reliable performance and the convenience of a booster spring mechanism that enables effortless operation for seamless filter bag changes. Benefit from drastic downtime reductions, enhanced productivity, minimized worker fatigue, and improved operational efficiency with this ingeniously crafted system.
2. REVOLUTIONARY SPRING-BALANCE MECHANISM: Innovation at its Best
Embrace the genius of our spring-balance mechanism that transforms the operation of the upper cover into an effortless task. With adjustability from 0 to 105°, our sleek clamshell design ensures no liquid spills, optimizing space and streamlining your workflow for maximum efficiency.
3. ESSENTIAL CORE OF THE BAG FILTER SYSTEM: Precision Engineering
Discover unparalleled sealing precision with our advanced compression spring pressure piece, guaranteeing a flawless 360° seal with the filter bag. This robust design prevents side leakage, supports a durable flower plate, and withstands higher pressures to minimize pressure loss, boosting filtration effectiveness. Offering versatile configurations from 2 to 24 bags, our system is tailored to your exact requirements.
Experience the ease of filter bag changes with our innovative spring locking device, designed to streamline your workflow with efficiency and ease.
Our basket gasket is meticulously crafted to ensure absolute leakage prevention, delivering reliable and consistent performance.
4. CUSTOMIZABLE INLET AND OUTLET DIRECTION: Flexibility Redefined
Choose from a wide array of customizable inlet and outlet directions to perfectly align with your installation needs and preferences. The adaptable flange diameter, adjustable from DN25 to DN250, ensures seamless integration with your existing system, offering unmatched flexibility and precision.
Our state-of-the-art engineered bag filters epitomize the zenith of precision engineering. With meticulous craftsmanship, they effortlessly remove even the tiniest impurities from liquids. These essential filters stand as the bedrock across a wide array of industries, delivering unparalleled precision and reliability that consistently excels.
- Refined Chemicals Sector: Unlock the full potential of our high-precision filtration technology to significantly elevate the quality and purity of your chemical products. Paint and Ink Filtration Excellence: Guarantee vibrant hues and immaculate finishes. Our filters set the benchmark standard in the realm of paint and ink filtration.
- Oil & Gas Sector Innovations: Pioneering the field with cutting-edge filtration solutions that enhance efficiency and safety in the ever-evolving oil and gas sector. Delivering dependable solutions for the intricate challenges of produced water filtration and well injection water purification, ensuring peak performance and adherence to environmental standards.
- Food & Beverage Industry Solutions: Elevate quality and safety with bespoke filtration solutions catering to the diverse processing requirements of the food and beverage industry. Providing industry-leading filtration tailored expressly for beer and wine production, juice concentrate clarification, and pristine processing of soft drinks and bottled water, maintaining unparalleled quality and taste.
- Automotive Manufacturing Precision: Championing excellence with superior filtration solutions for spray coating pretreatment, electrophoretic paint processing, ensuring a supreme finish and primer filtration. Achieve unparalleled performance in automotive spray coating pretreatment, electrophoretic paint processing, and exemplary finish and primer filtration. Our solutions assure flawless filtration for parts cleaning fluids, optimizing performance and precision across every application.
- Pulp & Paper Industry Applications: Providing sophisticated coating filtration solutions tailored for the distinctive and demanding requirements of the pulp and paper industry. Offering advanced coating filtration solutions customized to the unique demands of the pulp and paper industry, ensuring seamless and impeccable production processes.
- Machining Industry Efficiency: Setting the standard in enhancing tool performance and lifespan through superior filtration technology. Delivering exceptional filtration to boost the efficiency and performance of machine tool coolant circulation, cleaning fluids, and managing hydraulic and lubricating oils effectively, significantly enhancing overall machining productivity.



Hebei SLOT Filter Technology Co., LtdHebei SLOT Filter Technology Co., Ltd. stands as a beacon of innovation and reliability in the ever-evolving field of industrial precision filtration and self-cleaning filtration solutions. Boasting a distinguished legacy of over ten years, our company showcases unrivaled mastery in design and research & development. By harnessing state-of-the-art filtration technology, we provide an extensive array of premium product resources. Our comprehensive solutions deliver seamless turnkey filtration systems that are meticulously customized to meet the varied and intricate demands of our esteemed clientele.
At SLOT, we take immense pride in maintaining the prestigious ISO9001 quality management system certification, earning accolades from SGS for our unwavering commitment to quality and excellence. By adhering to stringent international standards and specific industry regulations, we tailor our product designs and manufacturing processes to meet the unique specifications of each client. Our focus is dedicated to crafting filtration equipment and components that offer exceptional performance and unrivaled quality.
Our SLOT automatic self-cleaning filter systems are the preferred choice across an expansive array of industries that 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 nationally and internationally.
Renowned for our superior product filter performance, state-of-the-art manufacturing prowess, and dedicated professional services, SLOT epitomizes excellence. For those seeking unparalleled filter system performance, unmatched quality, and outstanding service, SLOT is your trusted ally for lasting success.

Quality Management
FAQ
1. Who are we?
Established in the vibrant epicenter of Hebei, China, in 2014, we are Hebei Slot Filter Technology Co., Ltd., a beacon of innovative excellence. Our groundbreaking solutions echo across diverse markets including North America (40%), Western Europe (30%), South Asia (10%),
Africa (10%), and the Middle East (10%). Our dedicated team of 11 to 50 passionate professionals strive for perfection and remarkable achievements.
2. How can we guarantee quality?
Our steadfast dedication is to provide unparalleled quality. We initiate production with comprehensive sample evaluations, ensuring seamless adherence to standards.
Every shipment is subject to thorough inspections, maintaining our strict quality standards and unmatched consistency with remarkable precision.
3. What can you buy from us?
Explore our extensive range of skillfully crafted products including the precision-engineered Johnson Screen, resilient Bridge Slotted Well Screens, and Sand Control Well Screens, along with GravelPre-pack Screen, innovative Pipe-based screens, sturdy Perforated Pipes, and premium API/5CT Casing and Tubing. Each product is engineered to surpass performance benchmarks.
4. Why should you buy from us, not from other suppliers?
1. We offer a complete spectrum of OEM & ODM solutions, expertly customizing products to fit your specific needs.
2. Our proficient team excels in bespoke design and development, transforming your concepts into reality with tailored designs.
3. With a cutting-edge R&D team, we deliver innovative solutions, setting new industry benchmarks.
5. What services can we provide?
We provide flexible delivery options including: FOB, CFR, CIF, EXW, FAS, CIP, FCA, CPT, DEQ, DDP, DDU, Express Delivery, DAF, DES;
We accommodate a wide array of payment currencies such as USD, EUR, JPY, CAD, AUD, HKD, GBP, CNY, CHF, ensuring a smooth transaction experience.
For your utmost convenience, we support various payment methods: T/T, L/C, D/P D/A, MoneyGram, Credit Card, PayPal, Western Union, Cash, Escrow, providing you with ultimate ease.
Effortlessly communicate with us in multiple languages: English, Chinese, Spanish, Japanese, Portuguese, German, Arabic, French, Russian, Korean, Hindi, and Italian.
Aspiring to be an agent in your local market? Reach out to us and embark on exciting opportunities together.