Experience unparalleled efficiency with our Quick Open series multi-bag filter housings. These state-of-the-art housings boast a pioneering self-balancing V-clamp locking mechanism, a revolutionary advancement from traditional systems. Our design introduces an effortless, single-handed operation that is user-friendly, making it the perfect solution for high-flow rate applications.
This feature is ideal for scenarios necessitating frequent element change-outs, significantly reducing downtime and consequently decreasing operating costs while optimizing batch processes.
Safety is enhanced through a fully-interlocked pressure release system, safeguarding operations under all conditions. Constructed with rugged durability, our corrosion-resistant V-clamp and proprietary screw-drive mechanism ensure long-lasting service and exceptional reliability for users.
Transform your filtration operations with our wide array of precise and robust filter-bag materials, each meticulously crafted to address specific challenges:
PP (Polypropylene): Offering an adaptable range of 1-200µm, this material handles temperatures up to 70°C effortlessly, providing versatility across diverse settings and applications.
PE (Polyester): With a durable and extensive range of 1-200µm, this material withstands temperatures up to 120°C, making it ideal for the most rigorous and demanding scenarios.
Nylon: Boasting an impressive filtration range of 25-800µm and remarkable high-temperature resistance up to 150°C, this material is designed for the most challenging and strenuous environments.
Unlock the state-of-the-art potential of our Stainless Steel Multi-bag Filter Machine, a pinnacle of superior engineering and precision craftsmanship. Dive into our comprehensive Filter-Bag Numbers and explore their Detailed Specifications for optimal performance: 1#: 180mmD x 410mmL; 2#: 180mmD x 810mmL; 3#: 102mmD x 210mmL; 4#: 102mmD x 380mmL. Our extensive selection meets a broad spectrum of filtration needs, offering customized solutions for every requirement.

Introducing the multi bag filter system, a masterpiece of advanced engineering poised to redefine the filtration world with unparalleled precision and excellence. This cutting-edge system showcases a strategically placed inlet beneath the filter bags, expertly directing the filtering medium upward with ease into the housing's upper chamber. From this elevated position, it masterfully channels the flow downward through the filter bags with impeccable accuracy. This innovative process captures impurities with finesse, ensuring delivery of only the purest filtrate with unmatched grace and efficiency. Discover the pinnacle of pristine filtration with our state-of-the-art design, where every detail is crafted for ultimate performance.
To ensure the optimal performance of your filtration system, it is crucial to vigilantly monitor the filter bags. As impurities accumulate, forming dense filter cakes and resulting in a differential pressure of 0.14-0.17 MPa, timely bag replacement becomes imperative. During this critical maintenance phase, ensure a methodical shutdown of the system by gently opening the pressure relief valve and delicately removing the filter cover. After installing new bags, the system is primed to resume its flawless operation. Our eco-friendly filter bags are designed for reuse after cleaning, but should be replaced if noticeably compromised to maintain consistent performance and reliability. Adhering to this maintenance cycle is vital for efficiency and prolonging the operational lifespan of your filtration efforts.
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 cutting-edge multi-bag filter system showcases a swift-opening flange ring, securely anchored with robust bolt fastening. This ingenious design assures exceptional pressure resistance, providing unwavering reliability and superior performance. The innovative booster spring mechanism is engineered for effortless operation, making filter bag replacements remarkably easy. Witness a dramatic reduction in downtime, considerable boosts in productivity, minimized worker fatigue, and a substantial increase in operational efficiency with this expertly crafted system, tailored for excellence.
2. REVOLUTIONARY SPRING-BALANCE MECHANISM
Unveil the brilliance of our groundbreaking spring-balance mechanism, offering a smooth and labor-saving operation of the upper cover. Its fluid adjustability from 0 to 105° supports a sleek clamshell design that completely prevents liquid spills when opened. This efficient structure maximizes spatial utilization and streamlines workflow, enhancing every inch of your operational space for peak performance.
3. ESSENTIAL CORE OF THE BAG FILTER SYSTEM
Our state-of-the-art compression spring pressure piece ensures a perfect 360° seal with the filter bag, effectively eliminating any side leakage risks. The reinforced filter bag is engineered to complement the sturdy flower plate, capable of enduring higher pressures while minimizing pressure loss, thereby significantly boosting filtration efficiency. With an array of customization options, we offer customer flow configurations ranging from 2 to 24 bags, meticulously designed to cater to your specific demands.
Experience the effortless and smooth transition of filter bag changes with our advanced spring locking device, ensuring a seamless and streamlined workflow for your operations.
Our basket gasket is expertly crafted to ensure absolute leakage prevention, providing unwavering and reliable performance every time.
4. CUSTOMIZABLE INLET AND OUTLET DIRECTION
We present an extensive array of customizable inlet and outlet direction options, ensuring precise alignment with your installation requirements and user preferences. The adaptable flange diameter, adjustable from DN25 to DN250, guarantees seamless integration with your existing system, offering unmatched adaptability and flexibility to meet your unique operational needs.
Our expertly engineered bag filters stand as a testament to the pinnacle of precision engineering excellence. Crafted with meticulous attention to detail, these filters efficiently extract even the most minuscule trace impurities from a variety of liquids. These indispensable filters serve as the cornerstone across a wide spectrum of industries, offering unmatched precision and unwavering reliability that never falters.
- Refined Chemicals Sector: Unleashing the full potential of high-precision filtration, our solutions elevate the quality and purity of chemical products, ensuring excellence in every batch. Paint and Ink Filtration Excellence: Ensuring vibrant colors and flawless finishes, our filters set the industry standard, delivering superior results in paint and ink filtration.
- Oil & Gas Sector Innovations: At the cutting edge of the industry, we lead the frontier with state-of-the-art filtration solutions that significantly elevate efficiency and safety in the oil and gas sector. Providing reliable and pioneering solutions for the complex challenges of produced water filtration and well injection water purification, ensuring optimal performance and stringent environmental compliance.
- Food & Beverage Industry Solutions: Elevating quality and safety standards with tailored filtration systems that meet the diverse needs of food and beverage processing, ensuring unmatched excellence. Offering expert filtration solutions tailored specifically for beer and wine production, juice concentrate clarification, and ensuring pristine processing of soft drinks and bottled water, maintaining exceptional quality and taste.
- Automotive Manufacturing Precision: Driving excellence with enhanced filtration solutions for spray coating pretreatment and electrophoretic paint processing, ensuring a superior finish and primer filtration. Delivering enhanced performance in automotive spray coating pretreatment and electrophoretic paint processing, our solutions ensure a superior finish and primer filtration. We also provide impeccable filtration for parts cleaning fluids, optimizing performance and precision in every application.
- Pulp & Paper Industry Applications: Providing advanced coating filtration solutions engineered for the unique and demanding needs of the pulp and paper industry. Providing advanced coating filtration solutions meticulously tailored to the unique demands of the pulp and paper industry, ensuring smooth and flawless production processes.
- Machining Industry Efficiency: Leading the industry in enhancing tool performance and longevity through superior filtration technology, we boost productivity and efficiency. Delivering superior filtration to enhance the efficiency and performance of machine tool coolant circulation, cleaning fluids, and the effective management of hydraulic and lubricating oils, thereby boosting overall machining productivity.



Hebei SLOT Filter Technology Co., LtdHebei SLOT Filter Technology Co., Ltd. stands as a beacon in the ever-evolving sphere of industrial precision filtration and innovative self-cleaning filtration solutions. With a distinguished legacy of over a decade, we are renowned for our unparalleled expertise in design and R&D. Utilizing cutting-edge filtration technologies, we provide an expansive array of high-caliber product offerings. Our comprehensive solutions deliver turnkey filtration systems meticulously tailored to meet the intricate and varied demands of our esteemed clientele.
At SLOT, we are not only proud holders of the prestigious ISO9001 quality management system certification but have also earned accolades from SGS, underscoring our unwavering dedication to excellence. We adhere scrupulously to international standards and specific industry norms, ingeniously designing and custom-manufacturing our products to fulfill each client's distinct specifications. Our commitment is unwavering in crafting filtration equipment and components that exemplify superior performance and unmatched quality.
Our SLOT automatic self-cleaning filter systems are the top-tier choice across a vast array of industries. These include petrochemicals, fine chemicals, energy and power sectors, water treatment solutions, automotive manufacturing, food and beverage processing, and metal processing industries. We have forged strong, enduring partnerships with numerous esteemed industrial enterprises, both domestically and internationally.
Renowned for outstanding product filter performance, avant-garde manufacturing capabilities, and dedicated professional services, SLOT is synonymous with unmatched excellence. For those seeking superior filter system performance, impeccable quality, and exemplary service, SLOT is your unwavering partner for sustained success.

Excellence in Quality Management
Frequently Asked Questions
1. Who are we?
Established in the vibrant and industrious hub of Hebei, China, in 2014, we stand proudly as Hebei Slot Filter Technology Co., Ltd. Our company has become synonymous with breakthrough innovations. Our pioneering solutions have gained recognition across pivotal markets including North America (40%), Western Europe (30%), South Asia (10%),
Africa (10%), and the Middle East (10%). With a passionate team comprising 11 to 50 seasoned professionals, we are dedicated to achieving excellence and pushing the boundaries of innovation.
2. How can we guarantee quality?
At the heart of our operations is an unwavering commitment to delivering unparalleled quality. Prior to launching full-scale production, we meticulously validate standards through sample evaluations, ensuring seamless alignment and precision.
Every shipment is subject to thorough inspections, meticulously adhering to our strict quality benchmarks, thereby guaranteeing unmatched consistency and precision.
3. What can you buy from us?
Explore our extensive array of masterfully crafted products including the precision-engineered Johnson Screen, robust Bridge Slotted Well Screens, and Sand Control Well Screens, complemented by GravelPre-pack Screen, state-of-the-art Pipe-based screens, resilient Perforated Pipes, and superior-quality API/5CT Casing and Tubing. Each offering is designed to surpass performance expectations.
4. Why should you buy from us, not from other suppliers?
1. We provide a comprehensive range of OEM & ODM solutions, skillfully customizing products to align with your specific needs.
2. Our expert team excels in the art of custom design and development, transforming your concepts into reality with bespoke drawings.
3. Boasting an advanced R&D team, we deliver state-of-the-art solutions and continuously set new standards in the industry.
5. What services can we provide?
We offer a plethora of flexible delivery options including: FOB, CFR, CIF, EXW, FAS, CIP, FCA, CPT, DEQ, DDP, DDU, Express Delivery, DAF, DES, ensuring your order reaches you swiftly and securely;
Embracing a diverse range of payment currencies such as USD, EUR, JPY, CAD, AUD, HKD, GBP, CNY, CHF, we ensure a seamless and convenient transaction process.
For your utmost convenience, we support an array of payment methods: T/T, L/C, D/P D/A, MoneyGram, Credit Card, PayPal, Western Union, Cash, Escrow, offering you the ultimate ease of payment.
Communicate with us effortlessly in an impressive range of languages: English, Chinese, Spanish, Japanese, Portuguese, German, Arabic, French, Russian, Korean, Hindi, and Italian, ensuring clear and effective communication.
Eager to become an agent in your local market? Reach out to us and let's embark on exciting opportunities together.