Introducing the Quick Open Series: Step into a new era of engineering excellence with our innovative multi-bag filter housings. Featuring a cutting-edge self-balancing V-clamp locking mechanism, this series marks a groundbreaking advancement in design, delivering unmatched convenience with effortless single-handed operation. It is ideally tailored for high-flow applications, making it the premier choice for optimal efficiency and user-friendliness. Expertly crafted for situations where frequent element replacements are crucial, this advanced system is meticulously engineered to significantly minimize downtime. By achieving this, it profoundly reduces operating costs and ensures a seamless, uninterrupted batch processing experience. Revel in the harmonious fusion of unparalleled efficiency and cost-effectiveness.
Embrace a new standard of safety and efficiency with our fully interlocked pressure release mechanism, offering unwavering peace of mind in every scenario. The robust, corrosion-resistant V-clamp construction, combined with a unique screw-drive mechanism, promises years of reliable service, establishing itself as an essential tool for users.
Tailor your filtration experience to perfection with our selection of precise and enduring filter-bag materials, each meticulously designed to cater to specific requirements:
PP (Polypropylene): Rated 1-200µm, this adaptable material withstands temperatures up to 70°C, making it versatile across a wide range of settings and applications.
PE (Polyester): Offering a robust range of 1-200µm, this material endures temperatures up to 120°C, making it ideal for more demanding and rigorous applications.
Nylon: Featuring an impressive range of 25-800µm and a high-temperature tolerance up to 150°C, this material is perfect for challenging and strenuous environments.
Unleash the pioneering capabilities of our Stainless Steel Multi-bag Filter Machine, crafted with exceptional precision and excellence. Dive into our Filter-Bag Numbers along with their Detailed Specifications: 1#: Dimensions are 180mmD x 410mmL; 2#: Measures at 180mmD x 810mmL; 3#: Sized at 102mmD x 210mmL; 4#: With dimensions of 102mmD x 380mmL, we provide a diverse selection tailored to meet a variety of filtration needs.
The multi bag filter system epitomizes cutting-edge engineering, designed to enhance the filtration process with unmatched precision. With a strategically positioned inlet below the filter bags, the system ensures the filter medium seamlessly enters and ascends to the upper chamber of the housing. From this vantage point, it embarks on a carefully orchestrated journey downward, elegantly navigating through the filter bags. This advanced method guarantees that impurities are effectively captured, allowing only the purest filtrate to emerge with grace and efficiency. Discover the pinnacle of clean filtration with our state-of-the-art design, ensuring optimal performance and reliability.
To ensure optimal filtration efficiency, meticulous monitoring of the filter bags is paramount. As impurities build up, forming compact filter cakes and resulting in a differential pressure of 0.14-0.17 MPa, it becomes clear that bag replacement is necessary. During this crucial maintenance phase, ensure the system is properly shut down, open the pressure relief valve, and carefully remove the filter cover. Upon installing new bags, the system can resume smooth operation. Our filter bags offer the added benefit of being cleaned and reused, supporting sustainability. However, they should be replaced when significantly damaged to maintain consistent performance and reliability. This maintenance cycle is vital for both efficiency and longevity in your filtration processes.
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 multi-bag filter system features a state-of-the-art quick-opening flange ring, meticulously secured by bolt fastening to deliver unparalleled pressure resistance. The ingenious integrated booster spring mechanism guarantees smooth and effortless operations, making it the perfect solution for frequent filter bag changes. This innovative design significantly minimizes downtime, catapulting productivity to new heights while reducing worker strain and boosting overall operational efficiency.
2. REVOLUTIONARY SPRING-BALANCE MECHANISM
This exceptional spring-balance mechanism allows for seamless and labor-efficient operation of the upper cover, adjustable between 0 to 105° as needed. The sturdy yet uncomplicated support structure, coupled with a neat clamshell design, eliminates any risk of liquid spillage when the lid is opened, optimizing your space utilization to its fullest.
3. ESSENTIAL CORE OF THE BAG FILTER SYSTEM
Our pioneering compression spring pressure piece creates a faultless 360° seal with the filter bag, ensuring no side leakage. The enhanced filter bag is engineered to support the robust flower plate, enduring higher pressure and reducing pressure loss, thereby elevating filtration performance. We offer a variety of customization options, accommodating a wide array of customer flow configurations from 2 to 24 bags, precisely tailored to meet your specific needs.
Effortless filter bag changes with a reliable spring locking device
Basket gasket guarantees complete leakage prevention, enhancing system reliability.
4. CUSTOMIZABLE INLET AND OUTLET DIRECTION
We offer customizable options for both inlet and outlet directions, ensuring a perfect fit for your installation requirements and usage preferences. The flange diameter is adjustable, ranging from DN25 to DN250, ensuring flawless integration with your system.
Our expertly engineered bag filters are masterfully crafted to efficiently extract trace fine impurities from liquids. These filters are indispensable across a multitude of industries, offering unmatched precision and reliability.
- Refined Chemicals Sector. Paint and Ink Filtration Excellence.
- Oil & Gas Sector Innovations. Reliable solutions for produced water filtration, and well injection water purification.
- Food & Beverage Industry Solutions. Expert filtration for beer and wine production, juice concentrate clarification, and the pristine processing of soft drinks and bottled water.
- Automotive Manufacturing Precision. Enhanced automotive spray coating pretreatment, electrophoretic paint processing, as well as finish and primer filtration. Also, impeccable filtration for parts cleaning fluids.
- Pulp & Paper Industry Applications. Advanced coating filtration solutions.
- Machining Industry Efficiency. Superior filtration for machine tool coolant circulation, cleaning fluids, as well as hydraulic and lubricating oils.



Hebei SLOT Filter Technology Co., LtdHebei SLOT Filter Technology Co., Ltd. stands as a beacon of innovation and expertise in the dynamic field of industrial precision filtration and self-cleaning filtration solutions. With an impressive legacy spanning over a decade, our company demonstrates unmatched skill in design and R&D. Leveraging avant-garde filtration technology, we offer a rich array of premium product resources, delivering comprehensive, turnkey filtration solutions to satisfy the varied demands of our distinguished clientele.
SLOT proudly upholds the prestigious ISO9001 quality management system certification and has earned recognition from SGS, highlighting our steadfast commitment to excellence. We meticulously adhere to both international standards and specific industry regulations, customizing our product designs and manufacturing processes to meet unique client specifications. Our passion lies in creating filtration equipment and components that exemplify outstanding performance and superior quality.
Our SLOT automatic self-cleaning filter systems are the preferred choice across a multitude of industries, including petrochemicals, fine chemicals, energy and power sectors, water treatment, automotive manufacturing, food and beverage, and metal processing. We have established strong and enduring partnerships with a variety of esteemed industrial enterprises both nationally and internationally.
Renowned for our exceptional product filter performance, cutting-edge manufacturing capabilities, and dedicated professional services, SLOT is synonymous with excellence. For those in pursuit of superior filter system performance, uncompromised quality, and exceptional service, SLOT stands ready as your trusted partner for the long term.

Quality Management
FAQ
1. Who are we?
Established in the vibrant region of Hebei, China in 2014, we are Hebei Slot Filter Technology Co., Ltd. As pioneers of state-of-the-art solutions, we drive our pioneering products across the globe, primarily targeting North America (40%), Western Europe (30%), and South Asia (10%).
Also, we make our mark in Africa (10%) and the Middle East (10%). Our dynamic team, consisting of 11 to 50 skilled professionals, is dedicated to delivering excellence with unyielding passion.
2. How can we guarantee quality?
We ensure superior quality by presenting a pre-production sample for standard verification before advancing to full-scale production.
Comprehensive final inspections are diligently executed before each shipment, guaranteeing exceptional quality and reliability.
3. What can you buy from us?
Delve into our broad spectrum of meticulously crafted products, including the highly accurate Johnson Screen, robust Bridge Slotted Well Screens, and Sand Control Well Screens, perfectly paired with GravelPre-pack Screen, innovative Pipe-based screens, sturdy Perforated Pipes, and top-tier API/5CT Casing and Tubing.
4. Why should you buy from us, not from other suppliers?
1. We deliver comprehensive OEM & ODM solutions, tailoring products to align with your specific needs.
2. Our proficient team assists in the custom design and development of specialized drawings, bringing your visions to life.
3. Fueled by our cutting-edge R&D team, we consistently provide groundbreaking solutions.
5. What services can we provide?
Choose from our flexible delivery options: 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;
For your ease, we offer a diverse selection of payment methods: T/T, L/C, D/P D/A, MoneyGram, Credit Card, PayPal, Western Union, Cash, Escrow;
Engage with us effortlessly in a vast array of languages: English, Chinese, Spanish, Japanese, Portuguese, German, Arabic, French, Russian, Korean, Hindi, and Italian.
Eager to become our local market agent? Get in touch with us, and together we'll uncover exciting avenues of growth and success.