Backwashing Automatic Filter Housing System DFX Series

What is DFX filter housing？

SFFILTECH DFX Backwashing Automatic Filter Housing System

SFFILTECH’s DFX series backwashing automatic filter housing system is a high‑performance scraper‑type self‑cleaning filter designed

Additional FAQ

Q: How does a bag filter housing differ from a cartridge filter housing?
Bag filter housings use replaceable filter bags that are ideal for high flow, low viscosity applications, while cartridge filter housings hold cartridges that offer higher filtration precision and are suited for fine particulate removal.

Q: How do I choose the right filter housing size and flow rate?
Select a filter housing based on the maximum operating flow, viscosity of the liquid and required filtration precision. SFFILTECH offers single bag/multi bag and single cartridge/multi cartridge options to meet different flow rates.

Q: What operating temperatures and pressures can SFFILTECH filter housings handle?
Our stainless steel filter housings can withstand temperatures up to 260 ℃ and pressures up to 300 psi, ensuring safety in demanding industrial environments.

Q: Can you provide filter housings in carbon steel or other materials?
Yes, besides stainless steel housings, SFFILTECH manufactures housings from carbon steel and special alloys to suit various corrosion‑resistance and cost requirements.

Q: How often should the filter elements be replaced?
Replacement frequency depends on contamination levels and pressure drop. Equipped with pressure gauges or differential pressure sensors, our filter housing systems make it easy to determine when to replace cartridges or bags.

Q: How does the automatic backwash or scraper mechanism save on maintenance?
Automatic backwash and scraper self‑cleaning mechanisms remove accumulated solids without interrupting flow. This reduces manual cleaning frequency and lowers maintenance costs.

Q: Are SFFILTECH filter housings suitable

Additional FAQ

for food and pharmaceutical applications?
We offer sanitary filter housings made from polished stainless steel that meet FDA and GMP requirements, suitable for food, beverage and pharmaceutical processing.

Q: Can inlet and outlet orientations and connections be customized?
SFFILTECH can customize flange, threaded or clamp connections and arrange inlet/outlet ports horizontally or vertically according to your piping layout.

Q: What are the typical delivery times for standard and custom filter housings?
Standard models usually ship within 2‑4 weeks. Custom filter housings may require additional manufacturing time depending on complexity, but we work closely with customers to meet project timelines.

Q: What certifications do SFFILTECH filter housings support?
Our filter housings can be supplied with certifications such as CE, FDA, and ISO. We can also work with you to meet specific compliance requirements.

for continuous, reliable filtration of high‑viscosity liquids. By employing a mechanical scraping mechanism, the DFX filter automatically removes particles from the outer surface of the filter element, ensuring stable flow and reduced downtime.

Key Features

• Self‑cleaning scraper mechanism – mechanically scrapes impurities from the filter element for continuous online filtration without interrupting the process.
• High‑precision filtration – handles filtration ranges from 50 to 500 µm, making it suitable for fine particle removal.
• Handles high‑viscosity fluids – effective for liquids up to 800 000 CPS, preventing clogging and maintaining flow rates.
• Durable construction – stainless steel housings built to withstand high temperatures (up to 260 ℃) and pressures (up to 300 psi).
• Customizable configurations – available in various sizes, inlet/outlet orientations and materials to suit different industrial processes.
• Easy maintenance – automated scraping and backwash reduce manual cleaning and downtime.

Typical Applications

• Cooling water and process water treatment in power plants and HVAC systems
• Filtration of viscous chemical fluids, polymers, resins and paints
• Food & beverage production, including syrup, edible oils and beverages
• Oil & gas and petrochemical processes
• Metallurgy, paper & pulp and mining operations

Why Choose SFFILTECH?

• Over 20 years of filtration expertise – SFFILTECH is a leading manufacturer of self‑cleaning filters with a full range of scraper‑type solutions.
• High quality & reliability – our products are manufactured to international standards for durability and performance.
• Factory‑direct pricing – competitive pricing with no middleman markup.
• Customized solutions – we provide OEM/ODM services to tailor filter housings to your specific application.
• Responsive service – fast delivery and technical support to ensure your filtration system runs smoothly.

Technical features and advantages

1) Full automatic operation, 24 hours of continuous online filtering, ends heavy filter element replacement and cleaning work;

2) Low cost of material and high environmental protection with no disposable supplies.

3) Using metal sheet scraper has excellent effect. Impurity removal ability was significantly improved and avoided crushing impurities.

4) Top quality V-SLOT filter element, gap precision, extreme smooth surface, easy to scrape, high strength, long service life.

5) The filter pressure loss is very small, the flow is stable, energy saving, and the conducive to stable techniques.

6) Can be added to the back washing function as auxiliary cleaning filter element.

7) Closed filtration, to prevent the leakage of hazardous materials, to ensure safe procedure.

8) High concentration of waste liquid can be recycled, to avoid the loss of high value materials.

9) A variety of module combination and automatic mode to meet the requirements of various filtration systems.

10) The standard of international famous brand geared motor, high reliability, long service life.

11) Standard feature of having the auxiliary cover lifting device, one person can operate easily.