Introducing the External Automatic Self-cleaning Filter: a masterpiece by Hebei Slot Filter Technology Co., Ltd. Meticulously crafted to deliver unparalleled filtration efficiency, this advanced system is engineered for an extensive range of liquids, embracing those with viscosities reaching up to a staggering 800,000cps. It's the epitome of seamless filtration, granting you the luxury of uninterrupted flow even amidst the cleaning cycle, ensuring zero operator contact with the fluid stream. Forged from premium stainless steel, the filter elements boast an exceptional capability to eradicate contaminant particles as minuscule as 25 microns (μm), offering you pristine purity. The TSW filter revolutionizes your operations by eradicating the challenges of frequent manual cleaning, substantial investments, laborious tasks, and significant material wastage. Its state-of-the-art self-cleaning mechanism consistently maintains the cleanliness of the filter elements, efficiently expelling waste liquids laden with high concentrations of impurities. This process significantly curtails material wastage, enhancing water quality filtration and adeptly handling adhesive materials such as adhesives, resins, polymers, and fats. Experience a new era of efficiency and reliability in filtration.
Experience the seamless and efficient operation of our Self Cleaning Filter for Water and Viscous Liquids up to 800cps from Hebei Slot Filter Technology Co., Ltd. Engineered for superior performance, the liquid seamlessly enters through the filter inlet and elegantly flows inward from the outer surface of the filter element. The lower end connects directly to the outlet, allowing the purified liquid to exit effortlessly. As impurities accumulate on the filter element surface, our state-of-the-art cleaning procedure activates, either at pre-set intervals or triggered by a specific pressure difference. Precision-driven, the reduction motor initiates the rotation of the scraper, expertly attached to the outer surface, efficiently removing impurities. These particles then glide down along the scraper, descending into the filter's base with the liquid flow. Our innovative rotating sweeping plate ensures thorough cleaning by directing heavier particles into the sewage collecting chamber. Here, impurities gather before the drain valve automatically opens at designated times, expelling the high-concentration impurity-laden liquid. For sustainability-conscious operations, the discharged liquid is conveniently recyclable, making it an ideal choice for eco-friendly enterprises.
Details photos
Sub-series |
TSW11 TSW22 TSW34 TSW75 TSW100 TSW136 |
Filter Area(Square meter) |
0.11 0.22 0.34 0.75 1.0 1.36 |
Volume(L) |
~16 ~30 ~50 ~145 ~195 ~320 |
Inlet&Outlet Size |
DN40-DN50 DN50-DN80 DN50-DN100 DN65-DN100 DN80-DN125 DN100-DN150 |
Drain Size |
DN40 DN40 DN50 DN50 DN50 DN50 |
Applicapable Liquid |
water and viscous liquids(<800,000cps), impurity<1000ppm |
Filtration Degree |
50-500μm |
Standard Design Pressure |
1.0MPa, high design pressure available |
Design Temperature |
0-200ºC(depend on the seal material) |
Cleaning Differential Pressure |
0.05MPa |
Differential Pressure Instrument |
Differential pressure transmitter(DPT)/ Differential Pressure Switch(DPS) |
Gear Motor |
180W, three phase, 380V, protection class IP55, worm reduction gear |
Inlet and Outlet Standard |
Flange, HG20592-2009(standard), HG20615-2009(ANSI B16.5 Compatible);DIN11851 |
Filter Element Type |
V-SLOT slotted metal filter element, 316L material |
Housing Wet Part Material |
304/316L/CS |
Piston Material |
316L |
Scraping Blade Material |
PTFE |
Housing Seal Material |
NBR/VITON(FKM) |
Pistion Seal Material |
NBR/PU/VITON |
Discharging Valve |
Pneumatic ball valve, protection class IP65 |
Supply Facility Requirement |
380V AC,0.4-0.6MPa clean and dry compressed air |
-Experience seamless, fully automatic operation with our Self Cleaning Filter, designed for 24-hour, round-the-clock, uninterrupted online filtration, ensuring maximum productivity and efficiency.
-Our innovative system automatically discharges waste liquids laden with high concentrations of impurities, allowing them to be recycled. This reduces the loss of valuable materials, maximizing resource efficiency and sustainability.
-Engage in closed filtration processes that effectively prevent the leakage of hazardous materials, safeguarding work safety and protecting the health of employees, thereby creating a safer workplace environment.
-Utilizing robust stainless steel sheet scrapers, our filter provides exceptional scraping performance. This innovation greatly enhances impurity removal capacity while avoiding the crushing of impurities, ensuring optimal functionality.
-Enhance cleaning efficacy with an optional backwash function, designed to assist in maintaining pristine filter elements. A sophisticated PLC-based control system efficiently manages scraping and draining times, optimizing operation.
Applicable Liquid Types: Our advanced Self-Cleaning Filter is engineered to adeptly handle a wide array of liquid types, including but not limited to wax, kerosene, monomer, polymer, citric acid, fermented broth, cosmetics, silicon solution, soap, sorbitol, steroid sugar, wet end additives, adhesives, inks, lubricating oils, coatings, resin, rubber, ethanol, miscella, diesel, and more. This versatility makes it an indispensable tool in various industrial processes.
1. PVC Adhesive Filtration: Our Self-Cleaning Filter ensures the highest efficiency and purity in filtering PVC adhesives, providing seamless operations and impeccable product quality.
2.Hot Melt Adhesive Filtration: Experience unparalleled precision and reliability with our filter's capability to handle hot melt adhesives, ensuring smooth and continuous production.
3.Lubricating Grease Filtration: Maximize your equipment's performance with our filter's superior ability to purify lubricating grease, safeguarding machinery and extending service life.
4.Calcium Carbonate Filtration: Achieve pristine filtration of calcium carbonate, enhancing product integrity and operational efficiency with our state-of-the-art Self-Cleaning Filter.


Hebei SLOT Filter Technology Co., LtdHebei SLOT Filter Technology Co., Ltd. stands as a pioneering force in the realm of industrial precision filtration and self-cleaning filtration. With over a decade of profound industry immersion, our company showcases unparalleled design and R&D prowess. By harnessing cutting-edge filtration technology alongside an array of premium product resources, we deliver to our clients a complete and seamless array of filtration solutions, all under one roof.
SLOT is proud to hold the prestigious ISO9001 quality management system certification, alongside esteemed accreditation from SGS. We rigorously conform to international benchmarks, adhere to industry-specific regulations, and cater to bespoke client requirements in every facet of product design and manufacturing. Our commitment is unwavering in crafting high-performance, top-tier filtration equipment and precision filtration components that consistently exceed expectations.
The SLOT revolutionary automatic self-cleaning filter system finds its application across a wide spectrum of industries. From petrochemicals to fine chemicals, energy and power, water treatment, automotive manufacturing, food and beverage, to metal processing, our solutions are indispensable. We have forged enduring and robust partnerships with a multitude of acclaimed industrial enterprises on both domestic and global stages, underscoring our reliability and excellence.
With unrivaled product filter efficacy, cutting-edge manufacturing prowess, and unparalleled professional services, SLOT has garnered widespread acclaim. For those with elevated standards in filter system performance, quality, safety, and service, SLOT emerges as your dependable and esteemed long-term partner. Trust in SLOT to elevate your filtration needs to unmatched heights.

Quality Management
Frequently Asked Questions (FAQ)
1. Who are we?
We are Hebei Slot Filter Technology Co., Ltd., proudly based in Hebei, China, since 2014. Our products have captured the attention of various markets including North America (40%), Western Europe (30%), and South Asia (10%).
We also serve Africa (10%) and the Middle East (10%). Our dedicated team comprises of 11-50 skilled professionals, ready to serve your filtration needs.
2. How can we guarantee quality?
We ensure quality by providing a meticulous pre-production sample before commencing mass production.
Furthermore, a thorough final inspection is conducted before shipment to guarantee excellence.
3. What can you buy from us?
Our extensive range of products includes Johnson Screen, Bridge Slotted Well Screens, and Sand Control Well Screens. We also offer Gravel pre-pack Screen, Pipe-based screen, Perforated Pipe, and API/5CT Casing and Tubing.
4. Why should you buy from us instead of other suppliers?
1. We proudly support both OEM & ODM services to tailor solutions to your needs.
2. Our experienced team assists customers with detailed design drawings.
3. With our own professional research and development group, innovation is at the heart of our operations.
5. What services can we provide?
We offer flexible delivery terms including FOB, CFR, CIF, EXW, FAS, CIP, FCA, CPT, DEQ, DDP, DDU, Express Delivery, DAF, and DES.
We accept a wide range of payment currencies such as USD, EUR, JPY, CAD, AUD, HKD, GBP, CNY, and CHF.
Our payment types include T/T, L/C, D/P D/A, MoneyGram, Credit Card, PayPal, Western Union, Cash, and Escrow.
We speak your language! Our team is proficient in English, Chinese, Spanish, Japanese, Portuguese, German, Arabic, French, Russian, Korean, Hindi, and Italian.
If you are interested in becoming our agent in your local market, we warmly invite you to get in touch with us.