Introducing our Quick Open series multi-bag filter housings, a marvel in modern filtration! These feature a revolutionary self-balancing V-clamp locking mechanism, a significant advancement beyond conventional designs. Experience the future of filtration with ease and efficiency. Enjoy seamless, single-handed, user-friendly operation with our cutting-edge system, making it the ideal choice for high flow rate applications. Perfect for environments requiring frequent element change-outs, ensuring optimal performance with minimal effort.
Achieve unparalleled cost efficiency as reduced downtime minimizes operating costs, ensuring your batch processes run smoothly and effortlessly. Elevate your operational productivity with our advanced filtration solution.
Maximize safety and efficiency with our fully-interlocked pressure release feature, designed to perform impeccably under all conditions. Its robust construction ensures true peace of mind in every situation. Benefit from the long-lasting durability of our corrosion-free V-clamp and innovative screw-drive mechanism. This robust housing is built to provide you with years of reliable service, making it a wise investment for your filtration needs.
Transform your filtration experience with our extensive array of precise and robust filter-bag materials. Each option is meticulously engineered to address specific demands, ensuring you always find the perfect match for your requirements:
PP (Polypropylene): Boasting a rating of 1-200µm, this flexible material thrives in temperatures up to 70°C. It's the epitome of versatility, suiting diverse settings and applications with ease.
PE (Polyester): Renowned for its durability, this material spans a broad range of 1-200µm and withstands temperatures as high as 120°C. It's perfectly suited for rigorous and demanding applications, ensuring reliable performance every time.
Nylon: Offering an extraordinary range of 25-800µm and impressive high-temperature resistance reaching up to 150°C, this material is expertly designed for the most challenging environments. Elevate your operations with its unmatched resilience.
Discover the unparalleled potential of our Stainless Steel Multi-bag Filter Machine, a beacon of engineering excellence and precision. This state-of-the-art system is crafted to elevate your filtration capabilities to new heights. Dive into the specifics of our Filter-Bag Numbers and their Detailed Specifications, crafted to meet every filtration demand with precision and reliability: 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 is designed to cater to an extensive range of filtration requirements, ensuring tailored solutions for every unique need.

The multi bag filter system epitomizes the pinnacle of engineering excellence, meticulously crafted to transform the filtration process with unrivaled precision. The system boasts a strategically placed inlet situated beneath the filter bags, which elegantly guides the filter medium upwards into the housing's upper chamber. From this elevated point, the medium is expertly directed downwards with flawless precision, flowing seamlessly through the filter bags. This sophisticated and graceful process effectively captures impurities, ensuring the delivery of the purest possible filtrate with unmatched elegance and efficiency. Embrace the zenith of pristine filtration with this state-of-the-art design, setting new standards in purity and performance.
To uphold exceptional filtration performance, vigilant monitoring of the filter bags is imperative. As impurities accumulate and form dense filter cakes, leading to a differential pressure of 0.14-0.17 MPa, it signals the necessity for bag replacement. During this crucial maintenance phase, ensure the system is methodically shut down, the pressure relief valve is cautiously opened, and the filter cover is gently removed. Once new bags are installed, the system is primed to resume its flawless operation. Our eco-friendly filter bags are designed for cleaning and reuse, yet if significantly compromised, they should be replaced to maintain consistent performance and reliability. This maintenance cycle is vital for ensuring efficiency and prolonged operational longevity in 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
Introducing our cutting-edge multi-bag filter system, which features a quick-opening flange ring, masterfully secured with our robust bolt fastening. This design ensures unmatched pressure resistance, offering steadfast reliability and top-notch performance. The ingenious booster spring mechanism streamlines operations, transforming frequent filter bag changes into a seamless task. Experience significant reductions in downtime, amplified productivity, reduced worker fatigue, and a notable boost in operational efficiency with this meticulously crafted system.
2. REVOLUTIONARY SPRING-BALANCE MECHANISM
Unveil the excellence of our revolutionary spring-balance mechanism, offering an effortless and labor-saving operation for the upper cover. Featuring smooth adjustability from 0 to 105°, it embraces a sleek clamshell design, ensuring zero liquid spills upon opening. This efficient structure enhances spatial optimization, streamlining your workflow and maximizing every inch of your operational space for ultimate efficiency.
3. ESSENTIAL CORE OF THE BAG FILTER SYSTEM
Our advanced compression spring pressure piece guarantees a flawless 360° seal with the filter bag, completely eliminating side leakage. The reinforced filter bag, designed to complement the durable flower plate, withstands higher pressures while minimizing pressure loss, thus elevating filtration efficacy. With an array of customization options, we offer customer flow configurations from 2 to 24 bags, precisely engineered to cater to your specific filtration needs.
Experience fluid and effortless filter bag changes with our state-of-the-art spring locking device, ensuring a seamless and uninterrupted workflow.
Our expertly crafted basket gasket ensures absolute leakage prevention, delivering consistent and dependable performance you can trust.
4. CUSTOMIZABLE INLET AND OUTLET DIRECTION
We provide a diverse array of customizable inlet and outlet direction options, ensuring perfect alignment with your installation needs and user preferences. The versatile flange diameter, adjustable from DN25 to DN250, ensures flawless integration with your existing system, offering unparalleled adaptability and flexibility to accommodate your unique requirements.
Our expertly engineered bag filters exemplify the pinnacle of precision engineering. Meticulously crafted, they efficiently eliminate even the tiniest impurities from liquids. Essential across various industries, these filters offer unparalleled precision and reliability, ensuring flawless performance every time.
- Refined Chemicals Sector: Unleash the full potential of high-precision filtration to elevate the quality and purity of chemical products to new heights. Paint and Ink Filtration Excellence: Our filters ensure vibrant colors and flawless finishes, setting the industry standard in paint and ink filtration solutions.
- Oil & Gas Sector Innovations: Pioneering the frontier with cutting-edge filtration solutions that boost efficiency and safety within the oil and gas industry. We provide reliable solutions for the intricate challenges of produced water filtration and well injection water purification, ensuring peak performance and environmental compliance.
- Food & Beverage Industry Solutions: Enhance quality and safety with our tailored filtration systems, designed to meet diverse food and beverage processing needs. Offering expert filtration custom-tailored for beer and wine production, juice concentrate clarification, and the pristine processing of soft drinks and bottled water, maintaining exceptional quality and taste.
- Automotive Manufacturing Precision: Drive excellence with our advanced filtration solutions for spray coating pretreatment, electrophoretic paint processing, ensuring superior finish and primer filtration. Our solutions deliver enhanced performance in automotive spray coating pretreatment, electrophoretic paint processing, and superior finish and primer filtration. We also ensure impeccable filtration for parts cleaning fluids, optimizing performance and precision in every application.
- Pulp & Paper Industry Applications: Providing advanced coating filtration solutions tailored to the unique and demanding needs of the pulp and paper industry. Our advanced coating filtration solutions are designed for the unique demands of the pulp and paper industry, ensuring smooth and flawless production processes.
- Machining Industry Efficiency: Leading the charge in enhancing tool performance and longevity through superior filtration technology. Our superior filtration enhances the efficiency and performance of machine tool coolant circulation, cleaning fluids, and the effective management of hydraulic and lubricating oils, ultimately boosting overall machining productivity.



Hebei SLOT Filter Technology Co., LtdHebei SLOT Filter Technology Co., Ltd. stands as a beacon of innovation and excellence in the vibrant world of industrial precision filtration and self-cleaning filtration solutions. With a rich heritage of over a decade, our brand is synonymous with unparalleled expertise in design and research & development. We harness leading-edge filtration technology to offer an extensive array of high-caliber products. Our comprehensive solutions deliver complete, turnkey filtration systems meticulously engineered to meet the diverse and sophisticated demands of our esteemed clients.
At SLOT, we proudly bear the prestigious ISO9001 quality management system certification and have earned accolades from SGS, underscoring our unwavering commitment to excellence. Adhering scrupulously to international standards and specific industry regulations, we customize both product design and manufacturing processes to match each client's unique specifications. Our devotion is directed towards crafting filtration equipment and components that exemplify extraordinary performance and unmatched quality.
Our SLOT automatic self-cleaning filter systems are the preferred choice across a vast array of industries. These encompass petrochemicals, fine chemicals, energy and power sectors, water treatment, automotive manufacturing, food and beverage, and metal processing. We have fostered strong and enduring partnerships with numerous distinguished industrial enterprises, both within our borders and on the international stage.
Renowned for our exceptional product filter performance, state-of-the-art manufacturing capabilities, and dedicated professional services, SLOT is a byword for excellence. For those seeking superior filter system performance, impeccable quality, and outstanding service, SLOT is your committed partner for long-term success.

Quality Management
FAQ
1. Who are we?
Founded in the vibrant and industrious hub of Hebei, China, in 2014, we proudly stand as Hebei Slot Filter Technology Co., Ltd., a beacon of innovation and technological advancement. Our groundbreaking solutions echo across North America (40%), Western Europe (30%), South Asia (10%),
Africa (10%), and the Middle East (10%). Our dedicated team of 11 to 50 seasoned professionals is fueled by a passion for excellence and a drive to achieve the remarkable.
2. How can we guarantee quality?
Our steadfast commitment is to provide unparalleled quality in every product. We rigorously validate standards with pre-production sample evaluations, ensuring a flawless match with our exacting standards.
Every shipment is subject to comprehensive, meticulous inspections, maintaining our high-quality benchmarks and ensuring unmatched consistency with perfect precision.
3. What can you buy from us?
Explore our extensive array of expertly manufactured products, including the precision-engineered Johnson Screen, durable Bridge Slotted Well Screens, and Sand Control Well Screens, along with GravelPre-pack Screen, pioneering Pipe-based screens, robust Perforated Pipes, and top-quality API/5CT Casing and Tubing. Each product is crafted to surpass performance expectations and deliver excellence.
4. Why should you buy from us, not from other suppliers?
1. We provide a comprehensive range of OEM & ODM solutions, effortlessly customizing products to align with your specific needs.
2. Our adept team excels in custom design and development, turning your innovative ideas into reality with tailor-made drawings.
3. With a forward-thinking R&D team, we deliver pioneering solutions, consistently setting new industry benchmarks.
5. What services can we provide?
We offer a wide array of flexible delivery options including: FOB, CFR, CIF, EXW, FAS, CIP, FCA, CPT, DEQ, DDP, DDU, Express Delivery, DAF, DES;
We accept a diverse range of payment currencies such as USD, EUR, JPY, CAD, AUD, HKD, GBP, CNY, CHF, ensuring a smooth and seamless 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, offering you ease and flexibility.
Communicate with us effortlessly in multiple languages: English, Chinese, Spanish, Japanese, Portuguese, German, Arabic, French, Russian, Korean, Hindi, and Italian.
Aspiring to become an agent in your local market? Reach out to us and explore exciting opportunities together for mutual growth.