Introducing the Quick Open series multi-bag filter housings, an engineering marvel featuring the latest self-balancing V-clamp locking mechanism. This groundbreaking innovation revolutionizes traditional designs, delivering an effortlessly seamless, single-handed operation that sets a new standard for convenience. Ideal for applications with demanding high flow rates, it's the ultimate choice for efficiency. Crafted precisely for scenarios that require frequent element change-outs, this advanced system ensures minimal downtime, leading to a substantial reduction in operating costs while facilitating a smooth and uninterrupted batch processing experience.
Experience unparalleled efficiency with our fully-interlocked pressure release system, ensuring uncompromised safety across all scenarios. Built with a durable, corrosion-resistant V-clamp and a unique screw-drive mechanism, this housing is engineered to deliver years of dependable service to its users.
Customize your filter solution with our range of precise, durable filter-bag materials:
PP: Boasting a rating of 1-200µm, it withstands temperatures up to 70°C, providing versatility for an array of applications.
PE: With a range of 1-200µm, this material endures temperatures up to 120°C, making it ideal for more rigorous applications.
Nylon: With an impressive range of 25-800µm and a tolerance up to 150°C, perfect for the most challenging environments.
Explore the exceptional technical capabilities of our Stainless Steel Multi-bag Filter Machine: Filter-Bag Numbers & their Specifications: 1#: Measuring 180mmD x 410mmL; 2#: At 180mmD x 810mmL; 3#: Sized at 102mmD x 210mmL; 4#: 102mmD x 380mmL, providing diverse options to meet a wide range of needs.
Through a masterfully orchestrated design, our multi-bag filter system features an artfully positioned inlet, strategically lower than the filter bags themselves. As the filter medium gracefully enters via the inlet, it elegantly ascends to the top section of the housing, looming above the filter bags. Here, the medium embarks on a serene descent, effortlessly filtering through the filter bags to deliver a highly efficient filtration experience. This sophisticated process expertly ensnares impurities within the filter bags, allowing only the purest filtrate to smoothly exit through the outlet.
To achieve peak performance, it is essential to vigilantly monitor the condition of the filter bags. As impurities accumulate, forming filter cakes and causing a differential pressure of 0.14-0.17 MPa, it becomes imperative to replace the bags. During this critical maintenance phase, ensure that the filter system is properly shut down, the pressure relief valve is carefully opened, and the filter cover is gently removed. Upon installing new bags, the system can be seamlessly reactivated. Remarkably, filter bags can be cleaned and reused, promoting sustainability, but should be replaced upon sustaining significant damage. This meticulous cycle guarantees both outstanding efficiency and enduring longevity in the filtration process.
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 - MORE PRESSURE RESISTANT
Our multi-bag filter is distinguished by its cutting-edge quick-opening flange ring, securely fastened with bolts for unrivaled pressure resistance. The integrated booster spring mechanism simplifies and accelerates operations, making it ideal for frequent filter bag changes. This design innovation dramatically minimizes downtime and elevates productivity, while reducing worker fatigue and boosting operational efficiency to new heights.
2. SPRING-BALANCE MECHANISM
Our cutting-edge spring balance mechanism offers seamless, effortless operation of the upper cover, adaptable between 0-105° as required. This robust yet straightforward support structure, paired with an elegantly compact clamshell design, effectively prevents liquid spills while maximizing spatial efficiency.
3. THE CORE OF THE BAG FILTER SYSTEM
Harnessing an advanced compression spring pressure piece, our system ensures a perfect 360° seal with the filter bag, eliminating side leakage risk. The reinforced filter bag supports the sturdy flower plate, enabling it to endure greater pressure and minimizing pressure loss. This elevates its filtration performance. We provide versatile customization options, adapting from 2 to 24 bags to precisely meet your specific flow requirements.
The spring locking device makes filter bag replacements effortlessly swift
Our basket gasket promises absolute protection against any form of leakage
4. DIRECTION OF INLET AND OUTLET
We provide customizable inlet and outlet direction solutions to seamlessly match your installation criteria and usage demands. The flange diameter is adjustable, ranging from DN25 to DN250, ensuring flawless integration with your existing system.
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 Excellence: Our bag filters redefine precision, ensuring the utmost purity and efficiency in chemical processing. Paint and Ink Filtration Excellence: Achieve superior clarity and finish in your paint and ink products with our advanced filtration solutions.
- Oil & Gas Sector Innovations: Pioneering filtration solutions that enhance the purity and performance of oil and gas applications. Reliable solutions for produced water filtration, and well injection water purification, ensuring seamless operations and enhanced efficiency.
- Food & Beverage Industry Solutions: Elevate the quality and safety of your consumables with our cutting-edge filtration technology. Expert filtration for beer and wine production, juice concentrate clarification, and the pristine processing of soft drinks and bottled water, ensuring unparalleled quality and taste.
- Automotive Manufacturing Precision: Enhance production quality with our filtration systems, designed for superior precision in every automotive manufacturing process. Enhanced automotive spray coating pretreatment, electrophoretic paint processing, and finish and primer filtration. Experience impeccable filtration for parts cleaning fluids, elevating your automotive manufacturing excellence.
- Pulp & Paper Industry Applications: Deliver flawless paper products with our advanced filtration solutions tailored for the pulp and paper industry. Advanced coating filtration solutions that provide immaculate quality and superior performance for the pulp and paper sector.
- Machining Industry Efficiency: Maximize the efficiency of your machining operations with our top-tier filtration systems. Superior filtration for machine tool coolant circulation, cleaning fluids, and hydraulic and lubricating oils, ensuring optimal machine performance and longevity.



Hebei SLOT Filter Technology Co., LtdHebei SLOT Filter Technology Co., Ltd. stands as a vanguard in the world of industrial precision filtration and self-cleaning filtration solutions. With an impressive track record spanning over ten years, we demonstrate unmatched expertise in both design and R&D, setting us apart in the industry. Our commitment to utilizing state-of-the-art filtration technology, combined with a diverse array of top-tier product resources, empowers us to provide comprehensive, all-inclusive filtration solutions tailored to the varied demands of our valued customers.
SLOT is proud to hold the prestigious ISO9001 quality management system certification and the esteemed SGS certification, both testaments to our steadfast dedication to excellence. We rigorously adhere to international standards and industry-specific guidelines, allowing us to design and manufacture products that precisely meet the specialized requirements of our clients. Our mission is to engineer filtration equipment and components that not only deliver high performance but also embody superior quality at every level.
Our SLOT automatic self-cleaning filter systems are the preferred choice across a wide spectrum of industries, such as petrochemicals, fine chemicals, energy and power, water treatment, automotive manufacturing, food and beverage, and metal processing. We have cultivated strong, lasting partnerships with numerous renowned industrial enterprises globally, reflecting our commitment to excellence and innovation.
Renowned for our remarkable product filter performance, cutting-edge manufacturing capabilities, and dedicated professional services, SLOT has become synonymous with excellence. For those in pursuit of exceptional filter system performance, unwavering quality, and exemplary service, SLOT emerges as your trusted partner, committed to a successful and enduring collaboration.

Quality Management: We adhere to stringent quality control processes, setting a benchmark in excellence through rigorous inspections and precise standards to ensure that every product not only meets but exceeds industry requirements.
FAQ: Your inquiries are important to us, and we have compiled a detailed FAQ section to address your most pressing questions with clarity and comprehensive insights.
1. Who are we?
Based in Hebei, China, since 2014, we have rapidly become a leader in innovative filtration technology. Our pioneering solutions are trusted globally, with significant exports to North America (40%), Western Europe (30%), South Asia (10%),
Africa (10%), and the Middle East (10%). Our talented team consists of 11 to 50 dedicated professionals committed to achieving excellence in every project.
2. How can we guarantee quality?
Our unwavering commitment to quality starts with providing pre-production samples, ensuring that our standards are reinforced before moving into the full-scale production phase.
Meticulous final inspections are our cornerstone, performed before each shipment to guarantee that every product aligns with our high-quality benchmarks.
3. What can you buy from us?
Our impressive portfolio features the precision-engineered Johnson Screen, robust Bridge Slotted Well Screens, and Sand Control Well Screens, complemented by GravelPre-pack Screen, cutting-edge Pipe-based screens, durable Perforated Pipes, and superior API/5CT Casing and Tubing.
4. Why should you buy from us, not from other suppliers?
1. We provide extensive OEM & ODM services, customizing products to perfectly fit your needs.
2. Our expert team excels in crafting bespoke designs and drawings, ensuring your ideas are transformed into reality with precision.
3. Leveraging our dynamic R&D team, we drive continuous innovation, delivering forward-thinking solutions that keep you ahead in the market.
5. What services can we provide?
Our flexible delivery terms include: FOB, CFR, CIF, EXW, FAS, CIP, FCA, CPT, DEQ, DDP, DDU, Express Delivery, DAF, DES, tailored to your logistical needs;
We accommodate a range of payment currencies including USD, EUR, JPY, CAD, AUD, HKD, GBP, CNY, CHF;
To facilitate smooth transactions, we offer multiple payment methods: T/T, L/C, D/P D/A, MoneyGram, Credit Card, PayPal, Western Union, Cash, Escrow;
Communicate with us seamlessly in various languages: English, Chinese, Spanish, Japanese, Portuguese, German, Arabic, French, Russian, Korean, Hindi, and Italian, ensuring clear and effective dialogue.
Interested in becoming our local market agent? Connect with us, and together we can unlock exciting opportunities for growth and success.