Introducing the Quick Open Series: Embark on a journey of unrivaled engineering excellence with our multi-bag filter housings. Meticulously designed with a cutting-edge self-balancing V-clamp locking mechanism, this series marks a groundbreaking advancement in design, delivering unmatched convenience with its intuitive single-handed operation. Perfectly engineered for high-flow applications, it stands as the epitome of efficiency and user-friendliness. Crafted for environments where frequent element replacements are crucial, this sophisticated system is meticulously engineered to minimize downtime. In doing so, it significantly cuts operating costs, ensuring a seamless and uninterrupted batch processing journey. Experience the ultimate blend of efficiency and cost-effectiveness.
Safety and efficiency are redefined with our fully interlocked pressure release mechanism, offering unrivaled peace of mind in every situation. The robust, corrosion-resistant V-clamp construction, combined with a proprietary screw-drive mechanism, assures years of reliable service, making it an essential tool for users.
Enhance your filtration experience with our collection of precise and durable filter-bag materials, each designed to cater to specific requirements:
PP (Polypropylene): With a rating of 1-200µm, this adaptable material withstands temperatures up to 70°C, making it suitable for a wide range of settings and applications.
PE (Polyester): Offering a robust range of 1-200µm, this material can endure temperatures up to 120°C, proving ideal for more stringent and demanding 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 rigorous environments.
Discover the innovative capabilities of our Stainless Steel Multi-bag Filter Machine, engineered for superior excellence and precision. Explore 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 offer a diverse array of options expertly tailored to meet a variety of filtration needs.
The multi bag filter system is a marvel of innovative engineering, flawlessly designed to elevate the filtration process to new levels of precision. With a strategically placed inlet below the filter bags, the system allows the filter medium to enter with unmatched smoothness, ascending to the upper chamber of the housing. Once there, it embarks on a meticulously orchestrated descent, navigating seamlessly through the filter bags. This advanced method guarantees that impurities are expertly captured, ensuring that only the purest filtrate exits with unparalleled grace and efficiency. Discover the pinnacle of clean filtration with our state-of-the-art design.
To sustain peak filtration efficiency, vigilant monitoring of the filter bags is crucial. As impurities accumulate, forming dense filter cakes and creating a differential pressure of 0.14-0.17 MPa, it becomes clear that bag replacement is imperative. During this vital maintenance phase, ensure the system is meticulously shut down, the pressure relief valve is carefully opened, and the filter cover is gently removed. Once new bags are installed, the system can seamlessly resume its operation. Significantly, our filter bags provide the added benefit of being cleaned and reused, fostering sustainability. However, they should be replaced upon noticeable damage to maintain continuous performance and reliability. This maintenance cycle is essential 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 advanced multi-bag filter system is engineered with an innovative quick-opening flange ring that is expertly secured through bolt fastening. This ensures unparalleled pressure resistance, setting a new standard in durability and reliability. The thoughtfully integrated booster spring mechanism guarantees smooth and effortless operations, making it exceptionally suited for frequent filter bag replacements. This smart design significantly reduces downtime, dramatically boosting productivity while minimizing worker fatigue and enhancing overall operational efficiency.
2. REVOLUTIONARY SPRING-BALANCE MECHANISM
This ingenious spring-balance mechanism allows for effortless and labor-efficient operation of the upper cover, with an adaptable opening range from 0 to 105°, tailored to your specific needs. This robust yet straightforward support structure, in concert with a compact clamshell design, effectively prevents liquid spillage upon lid opening, ensuring optimized space utilization and a cleaner working environment.
3. ESSENTIAL CORE OF THE BAG FILTER SYSTEM
Our state-of-the-art compression spring pressure component ensures a flawless 360° seal with the filter bag, effectively eliminating any risk of side leakage. The durable reinforced filter bag, designed to support the heavy-duty flower plate, is capable of withstanding significantly higher pressures while minimizing pressure loss, thereby enhancing overall filtration performance. We also offer a wide range of versatile customization options, enabling tailored customer flow configurations from 2 to 24 bags, specifically designed to meet your unique requirements.
Effortless filter bag changes with a spring locking device
Basket gasket ensures complete leakage prevention
4. CUSTOMIZABLE INLET AND OUTLET DIRECTION
We offer a variety of customizable options for the inlet and outlet directions, tailored to perfectly align with your installation specifications and usage preferences. The flange diameter is adaptable, with options ranging from DN25 to DN250, ensuring seamless integration and compatibility with your existing 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. is a shining example of innovation and proficiency in the ever-evolving sphere of industrial precision filtration and self-cleaning filtration solutions. Boasting an illustrious history that spans more than ten years, our company showcases unparalleled expertise in design and research and development. By harnessing cutting-edge filtration technology, we provide an extensive array of premium product offerings, delivering all-encompassing, turnkey filtration solutions tailored to meet the diverse needs of our esteemed clientele.
At SLOT, we uphold the esteemed ISO9001 quality management system certification with pride and have garnered recognition from SGS, underscoring our unwavering dedication to excellence. We meticulously conform to global standards and specific industry regulations, customizing our product designs and manufacturing processes to precisely align with unique client specifications. Our unwavering passion is in crafting filtration equipment and components that exemplify extraordinary performance and impeccable quality.
Our SLOT automatic self-cleaning filter systems are the top choice across a wide array of industries, including petrochemicals, fine chemicals, energy and power sectors, water treatment, automotive manufacturing, food and beverage, and metal processing. We have forged robust and enduring partnerships with a host of esteemed industrial enterprises both on a national and international scale.
Celebrated for our exceptional product filter performance, state-of-the-art manufacturing capabilities, and devoted professional services, SLOT is synonymous with unparalleled excellence. For those in search of superior filter system performance, uncompromised quality, and outstanding service, SLOT stands ready as your trusted partner for the long haul.

Quality Management
FAQ
1. Who are we?
Founded in 2014 in the vibrant region of Hebei, China, we are Hebei Slot Filter Technology Co., Ltd., an industry trailblazer in crafting cutting-edge solutions. Our innovative products journey to diverse markets, including North America (40%), Western Europe (30%), South Asia (10%),
Africa (10%), and the Middle East (10%). Our agile and dynamic team, comprising 11 to 50 dedicated professionals, is passionately committed to delivering excellence and innovation.
2. How can we guarantee quality?
Our commitment to unwavering quality begins with providing a high-standard pre-production sample, ensuring all specifications are validated before full-scale production commences.
Rigorous and meticulous final inspections are conducted prior to every shipment, guaranteeing impeccable quality, consistency, and customer satisfaction.
3. What can you buy from us?
Discover a comprehensive range of finely engineered products including the precision-crafted Johnson Screen, the ultra-durable Bridge Slotted Well Screens, and the Sand Control Well Screens, enhanced by GravelPre-pack Screen, state-of-the-art Pipe-based screens, resilient Perforated Pipes, and the premium API/5CT Casing and Tubing, all designed to meet your distinctive needs.
4. Why should you buy from us, not from other suppliers?
1. We offer all-encompassing OEM & ODM solutions, expertly tailoring products to align with your specific requirements and expectations.
2. Our skilled team supports the bespoke design and development of custom drawings, bringing your unique ideas to life with precision.
3. Empowered by an innovative R&D team, we stand at the forefront of delivering pioneering and transformative solutions to the market.
5. What services can we provide?
We provide flexible delivery options tailored to your needs, including: FOB, CFR, CIF, EXW, FAS, CIP, FCA, CPT, DEQ, DDP, DDU, Express Delivery, DAF, DES.
Our payment options are as versatile as our products, accepting currencies such as USD, EUR, JPY, CAD, AUD, HKD, GBP, CNY, CHF.
To ensure your convenience, we support a wide variety of payment methods: T/T, L/C, D/P D/A, MoneyGram, Credit Card, PayPal, Western Union, Cash, Escrow.
Engage with us effortlessly in numerous languages, including English, Chinese, Spanish, Japanese, Portuguese, German, Arabic, French, Russian, Korean, Hindi, and Italian.
Eager to partner with us as a local market agent? Reach out and join us in exploring thrilling opportunities in your market!