Quick Open Series: Experience innovation with our multi-bag filter housings, boasting a revolutionary self-balancing V-clamp locking mechanism that transcends conventional designs. Seamless Operation: Its intuitive, single-handed operation makes it the optimal choice for high flow rate applications, ensuring efficiency with every use.
Efficiency Redefined: Perfect for scenarios demanding frequent element replacements, it reduces downtime, cuts operating costs, and streamlines your batch processes to perfection.
Safety and Durability: Elevate operational efficiency with a fully interlocked pressure release system, ensuring safety across all conditions. Its robust, corrosion-resistant V-clamp and proprietary screw-drive mechanism guarantee longevity and reliable performance over many years.
Filtration Excellence: Enhance your experience with our wide array of precision-engineered filter-bag materials, each crafted to meet unique specifications and demands:
PP (Polypropylene): Versatile and resilient, rated from 1-200µm, this material withstands temperatures up to 70°C, adapting seamlessly to diverse applications.
PE (Polyester): Robust and comprehensive, this material spans a range of 1-200µm, enduring temperatures up to 120°C, ideal for the most challenging scenarios.
Nylon: Versatile and enduring, offering a remarkable range of 25-800µm with exceptional high-temperature resistance up to 150°C, designed for the toughest environments.
Stainless Steel Marvel: Uncover the ultimate in precision engineering with our Stainless Steel Multi-bag Filter Machine, a masterpiece of cutting-edge technology. Filter-Bag Selection: Dive into our assortment of filter-bags with meticulous specifications, tailored to suit your precise filtration needs. Specifications: Offering versatility, 1#: 180mmD x 410mmL; 2#: 180mmD x 810mmL; 3#: 102mmD x 210mmL; 4#: 102mmD x 380mmL, our selection delivers customized solutions for diverse filtration demands.

The multi-bag filter system stands as a beacon of advanced engineering excellence, purposefully crafted to transform your filtration experience with unparalleled precision and sophistication. Ingeniously designed with an inlet strategically located beneath the filter bags, this innovative system gracefully directs your filter medium upwards into the housing's upper chamber. From this elevated position, the system meticulously channels the flow downwards with exquisite precision, ensuring a seamless journey through the filter bags. This elegant process masterfully captures impurities, delivering a filtrate of unrivaled purity with exceptional grace and efficiency. Immerse yourself in the pinnacle of pristine filtration with our state-of-the-art design.
Maintaining optimal filtration performance demands vigilant attention to the condition of the filter bags. As impurities accumulate and form dense filter cakes, causing the differential pressure to rise to a range of 0.14-0.17 MPa, it becomes imperative to replace the filter bags. At this pivotal maintenance juncture, ensure the system undergoes a careful shutdown, gently open the pressure relief valve, and delicately remove the filter cover. Once fresh bags are installed, the system is poised to recommence its flawless operation. Our environmentally conscious filter bags are designed for cleaning and reuse, yet should be replaced if significantly compromised to maintain consistent performance and reliability. This maintenance routine is crucial for ensuring optimal efficiency and prolonging the operational life of 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
Our state-of-the-art multi-bag filter system is a marvel of modern engineering, featuring a quick-opening flange ring that is expertly secured with robust bolt fastening. This design not only ensures unparalleled pressure resistance but also promises steadfast reliability and optimal performance, even under the most demanding conditions. The innovative booster spring mechanism simplifies operation, making frequent filter bag changes remarkably easy and efficient. Enjoy a dramatic reduction in downtime, substantial productivity enhancements, minimized worker fatigue, and a significant uplift in operational efficiency with this meticulously engineered system that combines strength with ease.
2. REVOLUTIONARY SPRING-BALANCE MECHANISM
Discover the cutting-edge brilliance of our revolutionary spring-balance mechanism, which provides seamless and labor-saving operation of the upper cover. Featuring smooth adjustability from 0° to 105°, it supports a sleek clamshell design that ensures zero liquid spills upon opening. This highly efficient structure not only optimizes spatial utilization but also streamlines your entire workflow, maximizing every inch of your operational space and enhancing the efficiency of your processes to unprecedented levels.
3. ESSENTIAL CORE OF THE BAG FILTER SYSTEM
Our advanced compression spring pressure piece is designed to ensure a flawless 360° seal with the filter bag, completely eliminating any side leakage. The reinforced filter bag is crafted to support the durable flower plate, which is capable of withstanding higher pressures and minimizing pressure loss. This enhances filtration efficacy remarkably. With a versatile range of customization options, we provide customer flow configurations from 2 to 24 bags, precisely engineered to suit your specific needs and demands, ensuring that you always get the perfect fit for your operations.
Experience smooth, effortless filter bag changes with our cutting-edge spring locking device, ensuring a seamless workflow and uninterrupted operations.
Our basket gasket is meticulously crafted to guarantee absolute leakage prevention, delivering unwavering and dependable performance that you can count on, time and again.
4. CUSTOMIZABLE INLET AND OUTLET DIRECTION
We offer a diverse suite of customizable inlet and outlet direction options, ensuring precise alignment with your installation needs and user preferences. The versatile flange diameter, adjustable from DN25 to DN250, guarantees perfect integration with your existing system, offering unparalleled adaptability and flexibility to meet any challenge your operations might face.
Our expertly engineered bag filters exemplify the pinnacle of precision engineering, crafted with meticulous attention to detail. These filters efficiently extract even the smallest trace impurities from liquids, serving as indispensable cornerstones across a wide spectrum of industries. With unmatched precision and unwavering reliability, they stand as the gold standard for filtration solutions.
- Refined Chemicals Sector: Harnessing the power of high-precision filtration, our products elevate the quality and purity of chemical outputs, ensuring superior standards and consistency. Paint and Ink Filtration Excellence: With our advanced filters, vibrant colors and flawless finishes become a reality, setting the industry benchmark in paint and ink filtration.
- Oil & Gas Sector Innovations: At the forefront of innovation, our state-of-the-art filtration solutions enhance efficiency and safety in the oil and gas industry, paving the way for future advancements. We provide reliable solutions to tackle complex challenges in produced water filtration and well injection water purification. Our systems ensure optimal performance and environmental compliance, meeting industry standards with ease.
- Food & Beverage Industry Solutions: Our tailored filtration systems elevate the quality and safety of diverse food and beverage processing needs, ensuring products meet the highest standards. Our expert filtration systems are precisely tailored for beer and wine production, juice concentrate clarification, and the pristine processing of soft drinks and bottled water, maintaining exceptional quality and taste at every stage.
- Automotive Manufacturing Precision: We drive excellence with enhanced filtration solutions, specifically designed for spray coating pretreatment, electrophoretic paint processing, and ensuring a superior finish and primer filtration. Our solutions deliver enhanced performance in automotive spray coating pretreatment, electrophoretic paint processing, and superior finish and primer filtration. Additionally, they ensure impeccable filtration for parts cleaning fluids, optimizing performance and precision across all applications.
- Pulp & Paper Industry Applications: Our advanced coating filtration solutions are crafted for the unique and demanding needs of the pulp and paper industry, ensuring smooth and flawless production processes. We provide advanced coating filtration solutions tailored to meet the unique demands of the pulp and paper industry, guaranteeing smooth and flawless production processes every time.
- Machining Industry Efficiency: Leading the industry, our superior filtration technology enhances tool performance and longevity, ensuring maximum efficiency and effectiveness. Our superior filtration systems enhance the efficiency and performance of machine tool coolant circulation, cleaning fluids, and the effective management of hydraulic and lubricating oils, significantly boosting overall machining productivity.



Hebei SLOT Filter Technology Co., LtdHebei SLOT Filter Technology Co., Ltd. stands as a beacon of innovation in the ever-evolving world of industrial precision filtration and self-cleaning filtration solutions. With a storied legacy that spans over ten years, we are the epitome of expertise in design and R&D, utilizing cutting-edge filtration technology. Our extensive array of high-caliber products offers holistic filtration solutions, meticulously crafted to fulfill the diverse and intricate needs of our esteemed clientele.
At SLOT, we proudly maintain the distinguished ISO9001 quality management system certification, and our efforts have been lauded by SGS, underscoring our unwavering dedication to excellence. We adhere rigorously to global standards and specific industry mandates, tailoring our product designs and manufacturing processes to meet the unique demands of each client. Our mission is to produce filtration equipment and components that reflect superior performance and unmatched quality.
Our SLOT automatic self-cleaning filter systems are the preferred choice across a multitude of industries, including petrochemicals, fine chemicals, energy and power, water treatment, automotive manufacturing, food and beverage, and metal processing. We have forged strong and enduring partnerships with numerous esteemed industrial enterprises on both a domestic and international level.
Renowned for our exceptional product filter performance, pioneering manufacturing prowess, and dedicated professional services, SLOT is synonymous with unparalleled excellence. For those seeking superior filter system performance, flawless quality, and outstanding service, SLOT is your committed partner for lasting success.

Quality Management
FAQ
1. Who are we?
Founded in the vibrant and industrious region of Hebei, China, in 2014, Hebei Slot Filter Technology Co., Ltd. stands as a beacon of innovation and excellence. Our state-of-the-art solutions have a strong presence in North America (40%), Western Europe (30%), and South Asia (10%).
Africa (10%), and the Middle East (10%). Our dedicated team of 11 to 50 highly skilled professionals is driven by passion and a commitment to achieving extraordinary results.
2. How can we guarantee quality?
We are steadfast in our mission to provide unparalleled quality. Our process begins with thorough sample evaluations before full-scale production, ensuring perfect alignment with rigorous standards.
Every shipment is subjected to comprehensive inspections, reinforcing our commitment to superior quality benchmarks and consistent excellence with unmatched precision.
3. What can you buy from us?
Explore our wide array of expertly engineered products, including the precision-crafted Johnson Screen and the durable Bridge Slotted Well Screens. Our offerings also include Sand Control Well Screens and GravelPre-pack Screen, innovative Pipe-based screens, robust Perforated Pipes, and high-quality API/5CT Casing and Tubing. Each product is meticulously designed to surpass performance expectations.
4. Why should you buy from us, not from other suppliers?
1. We provide an extensive range of OEM & ODM solutions, seamlessly customizing products to meet your specific needs and preferences.
2. Our proficient team excels in custom design and development, transforming your concepts into reality through bespoke drawings.
3. With our cutting-edge R&D team, we deliver innovative solutions that set new benchmarks in the industry.
5. What services can we provide?
We provide versatile delivery options such as FOB, CFR, CIF, EXW, FAS, CIP, FCA, CPT, DEQ, DDP, DDU, Express Delivery, DAF, and DES, ensuring seamless logistics.
We accept a broad spectrum of payment currencies including USD, EUR, JPY, CAD, AUD, HKD, GBP, CNY, CHF, facilitating a smooth transaction process.
To maximize convenience, we support an array of payment methods like T/T, L/C, D/P D/A, MoneyGram, Credit Card, PayPal, Western Union, Cash, and Escrow, ensuring effortless transactions.
Communicate with ease in multiple languages: English, Chinese, Spanish, Japanese, Portuguese, German, Arabic, French, Russian, Korean, Hindi, and Italian, for seamless interactions.
Aspiring to become an agent in your market? Connect with us and explore exciting collaborative opportunities.