Quick Open series multi-bag filter housings feature a self-balancing V-clamp locking mechanism, a break-through from conventionaldesigns. Its single-handed, user-friendly operation makes this feature an ideal choice for applications with high flow rates
requiring frequent element change-outs. Minimal downtime reduces operating costs and smoothen batch processes.
Efficiency is highly improved by a fully-interlocked pressure release which ensures safety in all conditions. With its rugged,corrosion-free V-clamp and proprietary screw-drive mechanism, the housing provides users with years of service.
Elevate your filtration process with our extensive array of precise and durable filter-bag materials, each meticulously designed to meet specific needs:
PP (Polypropylene): Ideally rated at 1-200µm, this versatile material endures temperatures up to 70°C, making it suitable for a wide range of settings and applications.
PE (Polyester): This sturdy material offers a range from 1-200µm and withstands temperatures reaching 120°C, making it perfect for the most demanding and challenging applications.
Nylon: Offering an impressive range of 25-800µm, with exceptional high-temperature resistance up to 150°C, this material is designed for the most strenuous and high-pressure environments.
Discover the forefront of innovation with our Stainless Steel Multi-bag Filter Machine, an exemplar of outstanding craftsmanship and precision engineering. Explore our Filter-Bag Numbers along with their Comprehensive 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, our wide selection fulfills a diverse range of filtration needs, providing customized solutions tailored for every requirement.
The multi bag filter system is a marvel of advanced engineering, meticulously designed to revolutionize the filtration process with an unparalleled level of precision and reliability. Featuring an inlet strategically positioned beneath the filter bags, this system seamlessly welcomes the filter medium, guiding it with elegance into the upper chamber of the housing. Within this sophisticated architecture, the system orchestrates a meticulous downward journey, expertly navigating through the filter bags. This refined process ensures that impurities are adeptly captured, resulting in the release of the purest filtrate with exceptional grace and efficiency. Experience the zenith of pristine filtration with our cutting-edge design, where every element is crafted to deliver unmatched performance and reliability.
Sustaining optimal filtration performance demands vigilant monitoring of the filter bags. As impurities accumulate, forming compact filter cakes and resulting in a differential pressure of 0.14-0.17 MPa, it becomes imperative to replace the bags. During this crucial maintenance phase, ensure the system is meticulously shut down, the pressure relief valve is cautiously opened, and the filter cover is gently removed. Once new bags are correctly installed, the system is primed to resume its flawless and efficient operation. Our filter bags are designed with sustainability in mind and can be cleaned and reused, though they should be replaced if significantly compromised to maintain consistent performance and reliability. This maintenance cycle is vital for ensuring efficiency and prolonging the operational life of your filtration endeavors, guaranteeing seamless and effective filtration.
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 - STEADFAST PRESSURE RESISTANCE
Our state-of-the-art multi-bag filter system is equipped with a quick-opening flange ring, expertly secured by bolt fastening. This guarantees exceptional pressure resistance, ensuring robust and trustworthy performance. The integrated booster spring mechanism facilitates seamless and fluid operation, making it an ideal solution for frequent filter bag changes. Benefit from greatly reduced downtime, substantial productivity boosts, minimized worker strain, and overall heightened operational efficiency with this thoughtfully engineered system.
2. INNOVATIVE SPRING-BALANCE MECHANISM
Presenting a revolutionary spring-balance mechanism that enables effortless and labor-efficient operation of the upper cover, smoothly adjustable from 0 to 105° as needed. This robust yet straightforward support structure, along with a stylish clamshell design, ensures no liquid spillage when the lid is opened, maximizing space utilization and streamlining your operational processes.
3. VITAL COMPONENT OF THE BAG FILTER SYSTEM
Our pioneering compression spring pressure piece provides an impeccable 360° seal with the filter bag, completely preventing any side leakage. The strengthened filter bag is designed to support the durable flower plate, withstanding higher pressures while minimizing pressure loss, thereby enhancing filtration performance. With a wide range of customization options, we offer customer flow configurations from 2 to 24 bags, precisely tailored to your specific needs.
Experience seamless and effortless filter bag changes with our cutting-edge spring locking device.
Our basket gasket is meticulously engineered for absolute leakage prevention, delivering consistent and reliable performance.
4. CUSTOMIZABLE INLET AND OUTLET DIRECTIONAL OPTIONS
We provide a variety of customizable options for inlet and outlet directions, allowing precise alignment with your installation requirements and user preferences. The adjustable flange diameter, ranging from DN25 to DN250, ensures flawless integration with your existing system, offering unmatched adaptability.
Our expertly engineered bag filters, a marvel of precision engineering, stand as the epitome of meticulous craftsmanship. These filters demonstrate an exceptional ability to proficiently remove even the tiniest trace impurities from liquids, making them an indispensable asset across a multitude of industries. They offer unrivaled precision and steadfast reliability, serving as the backbone of industrial filtration solutions.
- Refined Chemicals Sector Paint and Ink Filtration Excellence
- Oil & Gas Sector Innovations We provide reliable and robust solutions to tackle the complex challenges associated with produced water filtration and the purification of well injection water, ensuring optimal performance and compliance in the oil and gas sector.
- Food & Beverage Industry Solutions Our expert filtration offerings are specifically tailored to meet the demands of beer and wine production, juice concentrate clarification, and the impeccable processing of soft drinks and bottled water, ensuring the highest standards of purity and quality.
- Automotive Manufacturing Precision Our solutions deliver enhanced performance and precision in the automotive sector, addressing every aspect from spray coating pretreatment to electrophoretic paint processing, ensuring a superior finish and primer filtration. We also provide flawless filtration for parts cleaning fluids, optimizing manufacturing efficiency.
- Pulp & Paper Industry Applications We offer advanced coating filtration solutions, meticulously designed to cater to the unique and demanding needs of the pulp and paper industry.
- Machining Industry Efficiency Our advanced filtration systems provide unmatched superiority, enhancing the efficiency of machine tool coolant circulation, cleaning fluids, and the proficient management of hydraulic and lubricating oils, ensuring peak performance in the machining industry.



Hebei SLOT Filter Technology Co., LtdHebei SLOT Filter Technology Co., Ltd. stands as a beacon of innovation and expertise in the dynamic realm of industrial precision filtration and self-cleaning filtration solutions. With an impressive legacy that spans over a decade, our company showcases unparalleled prowess in both design and research & development. By harnessing cutting-edge filtration technology, we offer a vast array of premium product resources. Our comprehensive, turnkey filtration solutions are meticulously crafted to meet the diverse and discerning demands of our esteemed clientele. We are dedicated to delivering excellence in every facet of our operations.
SLOT proudly upholds the illustrious ISO9001 quality management system certification and has earned recognition from SGS, underscoring our unwavering commitment to excellence. We rigorously adhere to international standards and specific industry regulations, meticulously customizing our product designs and manufacturing processes to meet the unique specifications of each client. Our passion is steadfastly focused on producing filtration equipment and components that epitomize outstanding performance and superior quality, ensuring our offerings consistently exceed customer expectations.
Our SLOT automatic self-cleaning filter systems are the preferred 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 a multitude of esteemed industrial enterprises both within our nation and on the international stage, solidifying our status as leaders in the filtration industry.
Renowned for our exceptional product filter performance, state-of-the-art manufacturing capabilities, and dedicated professional services, SLOT is synonymous with excellence. For those in pursuit of superior filter system performance, uncompromised quality, and distinguished service, SLOT stands as your trusted partner for the long term. We are committed to fostering enduring relationships by consistently delivering innovative solutions that meet and exceed the highest industry standards.

Quality Management
FAQ
1. Who are we?
Established in 2014 in the vibrant province of Hebei, China, we are Hebei Slot Filter Technology Co., Ltd. As trailblazers in innovation, our revolutionary solutions have left an indelible impact across regions including North America (40%), Western Europe (30%), South Asia (10%),
Africa (10%), and the Middle East (10%). Our dynamic team, comprising 11 to 50 dedicated professionals, is passionately committed to delivering excellence at every phase.
2. How can we guarantee quality?
Our commitment is resolute-quality without compromise. We verify standards by providing a sample before full-scale production, ensuring flawless alignment and impeccable results.
Every shipment undergoes comprehensive inspections, ensuring our superior quality standards and unwavering consistency are meticulously met.
3. What can you buy from us?
Explore our extensive range of meticulously engineered products, including the precision-crafted Johnson Screen, robust Bridge Slotted Well Screens, and Sand Control Well Screens, together with GravelPre-pack Screen, cutting-edge Pipe-based screens, durable Perforated Pipes, and top-tier API/5CT Casing and Tubing. Each product is crafted to exceed your expectations.
4. Why should you buy from us, not from other suppliers?
1. We offer a complete range of OEM & ODM solutions, customizing products to seamlessly meet your unique requirements.
2. Our expert team excels in bespoke design and development, bringing your ideas to life through custom drawings with precision.
3. With a state-of-the-art R&D team, we are committed to providing cutting-edge and innovative solutions, setting new industry benchmarks.
5. What services can we provide?
We offer flexible delivery solutions including: FOB, CFR, CIF, EXW, FAS, CIP, FCA, CPT, DEQ, DDP, DDU, Express Delivery, DAF, DES;
Our broad acceptance of payment currencies includes USD, EUR, JPY, CAD, AUD, HKD, GBP, CNY, CHF; ensuring a seamless transaction experience.
For your convenience, we support a diverse range of payment methods: T/T, L/C, D/P D/A, MoneyGram, Credit Card, PayPal, Western Union, Cash, Escrow; offering you ultimate ease.
Communicate with us effortlessly in a variety of languages: English, Chinese, Spanish, Japanese, Portuguese, German, Arabic, French, Russian, Korean, Hindi, and Italian.
Looking to become an agent in your local market? Reach out to us, and let's explore exciting opportunities together.