Introducing the Quick Open Series: Experience the pinnacle of engineering with our multi-bag filter housings. Designed with a state-of-the-art self-balancing V-clamp locking mechanism, this series represents a revolutionary leap in design, offering unparalleled ease with its single-handed operation. Perfectly suited for high-flow applications, this is the ultimate choice for efficiency and ease of use. Crafted for scenarios where frequent element replacements are paramount, this sophisticated system is engineered to minimize downtime. By doing so, it dramatically reduces operating costs, ensuring a seamless and uninterrupted batch processing journey. Enjoy the perfect blend of efficiency and cost-effectiveness.
Safety and efficiency are redefined with our fully interlocked pressure release mechanism, offering peace of mind in every situation. The robust, corrosion-resistant V-clamp construction, paired with a proprietary screw-drive mechanism, guarantees years of steadfast service, solidifying its place as an indispensable tool for users.
Customize your filtration experience with our range of precise and durable filter-bag materials, each tailored to meet specific needs:
PP (Polypropylene): Rated 1-200µm, this versatile material withstands temperatures up to 70°C, making it adaptable across numerous settings and applications.
PE (Polyester): With a robust range of 1-200µm, this material can endure temperatures up to 120°C, making it ideal for more rigorous and demanding applications.
Nylon: Boasting an impressive range of 25-800µm and a high-temperature tolerance up to 150°C, this material is perfect for challenging and strenuous environments.
Discover the cutting-edge capabilities of our Stainless Steel Multi-bag Filter Machine, crafted for 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 tailored to meet a variety of filtration needs.
The multi bag filter system epitomizes the pinnacle of engineering excellence, meticulously crafted to enhance filtration precision and performance. With an ingeniously positioned inlet beneath the filter bags, the system facilitates the seamless entrance of the filter medium. This medium gracefully ascends to the upper chamber, before embarking on a sophisticated descent through the filter bags. This well-choreographed process ensures that impurities are effectively captured, delivering only the purest filtrate with unmatched grace and efficiency. Discover the ultimate in clean filtration with this state-of-the-art design.
For optimal filtration performance, it is crucial to vigilantly monitor the filter bags. As accumulated impurities form dense filter cakes, a differential pressure of 0.14-0.17 MPa signals the need for bag replacement. During this vital maintenance phase, ensure the complete shutdown of the system, opening of the pressure relief valve, and careful removal of the filter cover. Once new bags are installed, the system can resume its operations with ease. Our innovative filter bags offer the significant advantage of being cleanable and reusable, enhancing sustainability. However, they should be replaced if significantly damaged to maintain consistent performance and reliability. This maintenance cycle is essential for both efficiency and the prolonged lifespan of your filtration system.
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
Experience the unprecedented power of our multi-bag filter system, meticulously designed with a state-of-the-art quick-opening flange ring secured by reliable bolt fastening. This innovative design delivers unmatched pressure resistance. Coupled with an integrated booster spring mechanism, it guarantees smooth, hassle-free operations that are perfect for frequent filter bag replacements. This translates to drastically reduced downtime, skyrocketing productivity while reducing worker fatigue, and significantly enhancing overall operational efficiency.
2. REVOLUTIONARY SPRING-BALANCE MECHANISM
Discover the genius behind our revolutionary spring-balance mechanism that facilitates smooth and labor-efficient operation of the upper cover, adjustable from 0 to 105° as required. This robust yet elegantly simple support system, combined with a compact clamshell design, ensures zero liquid spillage when opening the lid, optimizing space utilization to its fullest potential.
3. ESSENTIAL CORE OF THE BAG FILTER SYSTEM
Our cutting-edge compression spring pressure piece achieves an impeccable 360° seal with the filter bag, ensuring zero side leakage. The reinforced filter bag, expertly crafted to support the rugged flower plate, is capable of withstanding greater pressure and minimizing pressure loss, thereby elevating filtration performance. We offer diverse customization options, accommodating a wide array of flow configurations from 2 to 24 bags, precisely tailored to meet your specific requirements.
Effortless filter bag changes with a spring locking device
Basket gasket ensures complete leakage prevention
4. CUSTOMIZABLE INLET AND OUTLET DIRECTION
Tailor your system installations to perfection with our customizable inlet and outlet directions, designed to align seamlessly with your installation requirements and usage preferences. The flange diameter is also adjustable, ranging from DN25 to DN250, ensuring flawless integration with your existing system framework.
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: Our bag filters are engineered to ensure the utmost purity in chemical processing, safeguarding product integrity and enhancing operational efficiency. Paint and Ink Filtration Excellence: Our filtration systems deliver superior performance in maintaining the purity and consistency necessary for high-quality paint and ink production.
- Oil & Gas Sector Innovations: Our robust filter housings are designed to withstand the harsh conditions of the oil and gas industry, ensuring reliable filtration in high-pressure environments. Reliable solutions for produced water filtration, and well injection water purification, maintaining optimal system performance and preserving ecological balance.
- Food & Beverage Industry Solutions: Our filtration solutions ensure the utmost purity and safety of consumable products, from the initial production stages to the final packaging. Expert filtration for beer and wine production, juice concentrate clarification, and the pristine processing of soft drinks and bottled water, ensuring every sip meets the highest quality standards.
- Automotive Manufacturing Precision: Our filters enhance the precision and quality of automotive manufacturing processes, ensuring smooth operations and superior product outcomes. Enhanced automotive spray coating pretreatment, electrophoretic paint processing, as well as finish and primer filtration. Impeccable filtration for parts cleaning fluids ensures the highest standards of precision and cleanliness.
- Pulp & Paper Industry Applications: Our filtration technology supports the production of high-quality paper products, optimizing the efficiency and sustainability of pulp and paper processes. Advanced coating filtration solutions provide the precision required for the production of clear, durable, and flawless coatings across various applications.
- Machining Industry Efficiency: Our filters enhance the productivity and longevity of machining processes by ensuring the cleanliness and efficiency of vital fluids. Superior filtration for machine tool coolant circulation, cleaning fluids, as well as hydraulic and lubricating oils, ensuring optimal machine performance and reliability.



Hebei SLOT Filter Technology Co., LtdHebei SLOT Filter Technology Co., Ltd. is a beacon of innovation and expertise, expertly navigating the dynamic field of industrial precision filtration and self-cleaning filtration solutions. With a legacy of over a decade, our company showcases unmatched prowess in both design and R&D, harnessing cutting-edge filtration technology to offer an extensive array of premium products. We provide comprehensive, turnkey solutions that fulfill the diverse needs of our esteemed clients.
SLOT is proud to carry the prestigious ISO9001 quality management system certification, along with recognition from SGS, underscoring our unwavering commitment to excellence. We diligently adhere to international standards alongside specific industry regulations, tailoring our product designs and manufacturing processes to meet unique client specifications. Our passion is exemplified through filtration equipment and components that represent outstanding performance and unparalleled quality.
Our SLOT automatic self-cleaning filter systems are the go-to choice across a wide array of industries, including petrochemicals, fine chemicals, energy and power, water treatment, automotive manufacturing, food and beverage, and metal processing. We've established robust and long-lasting partnerships with a variety of esteemed industrial enterprises both domestically and internationally.
Renowned for our outstanding product filter performance, state-of-the-art manufacturing capabilities, and passionate professional services, SLOT is synonymous with excellence. For those seeking superior filter system performance, uncompromised quality, and exceptional service, SLOT stands as your trusted partner for the long haul.

Quality Management
FAQ
1. Who are we?
Founded in 2014 in Hebei, China, we are Hebei Slot Filter Technology Co., Ltd., a pioneering force in crafting state-of-the-art filtration solutions. Our innovative products have made their mark across the globe, with North America (40%), Western Europe (30%), South Asia (10%), Africa (10%), and the Middle East (10%) being our primary markets. Our dynamic team, composed of 11 to 50 dedicated professionals, is relentlessly driven by a passion for perfection.
Africa (10%), and the Middle East (10%). Our agile team, comprising 11 to 50 talented professionals, is passionately committed to excellence.
2. How can we guarantee quality?
To assure top-tier quality, we commit to delivering a pre-production sample that sets the benchmark for full-scale production. This rigorous process ensures adherence to our high standards.
In addition, exhaustive final inspections are systematically performed before each shipment, guaranteeing unparalleled quality and reliability with every delivery.
3. What can you buy from us?
Discover our expansive selection of meticulously crafted products, including the precision Johnson Screen, robust Bridge Slotted Well Screens, and Sand Control Well Screens. These are perfectly complemented by our Gravel Pre-pack Screen, state-of-the-art Pipe-based screens, durable Perforated Pipes, and high-quality API/5CT Casing and Tubing.Pre-pack Screen, cutting-edge Pipe-based screens, resilient Perforated Pipes, and premium API/5CT Casing and Tubing.
4. Why should you buy from us, not from other suppliers?
1. We offer comprehensive OEM & ODM solutions, tailoring our products to fit your specific needs with precision.
2. Our skilled team excels in custom design and development, bringing your unique ideas to life with custom drawings.
3. Backed by our groundbreaking R&D team, we lead the charge in providing innovative, forward-thinking solutions.
5. What services can we provide?
We provide a myriad of flexible delivery options, including FOB, CFR, CIF, EXW, FAS, CIP, FCA, CPT, DEQ, DDP, DDU, Express Delivery, DAF, and DES.
Our payment currency acceptance is vast, covering USD, EUR, JPY, CAD, AUD, HKD, GBP, CNY, and CHF.
We offer a wide selection of payment methods for your convenience, such as T/T, L/C, D/P D/A, MoneyGram, Credit Card, PayPal, Western Union, Cash, and Escrow.
Communicate with us effortlessly in numerous languages, including English, Chinese, Spanish, Japanese, Portuguese, German, Arabic, French, Russian, Korean, Hindi, and Italian.
Aspiring to become our market agent in your local area? Reach out to us, and together we can unlock exciting opportunities for mutual growth.