
Automatic filters:
Fully automatic backflush filters
(RSF F30 and RSF F32)

In numerous branches of industry and industrial applications, self-cleaning automatic filters have established themselves as process-safe and powerful filter systems of mostly low-viscosity liquids. Reasons therefore are continuous operation, low maintenance requirements and the long service life of the filter media used. Consequently, automatic backflush filters are used, for example, in water treatment (cooling water, process water, building water, wastewater, spraying water, drinking water), in the filtration of seawater, water streams in metallurgical plants and rolling mills, liquid fuels, and water-based and non-water-based cooling lubricants. The highly reliable technology and design of FAUDI fully automatic backflush filters has also been proven in the most challenging environments of numerous offshore installations.

The sizes of the two FAUDI backflush filter series are suitable for very high flow rates depending on the filter medium, the filter fineness and the type of backflushing. A modular design allows individual adaptation of the flow rate in each case from 15 m³/h to 12,000 m³/h. We are able to complement our standard sizes in welded construction as needed with project-specific products using the ideal materials, coatings and controls – all tailored to your use case or the customer specifications, standards and norms required.
How does a fully automatic
backflush filter work?

Filtration
The medium which has to be filtered flows through the filter elements from the inside to the outside and impurities are retained on the inside at the surface of the filter elements. Thereby, the pressure difference between the dirty and clean side of the filter elements increases.
Backflush
RSF F30 with filter elements
If the differential pressure has exceeded a set limit or a time interval has expired, the backflush filter automatically opens the backflush circuit in the cleaning unit. Due to the rotation of the cleaning unit, a partial flow of the filtered product passes through each filter element in turn from the outside to the inside and flushes the impurities from the smooth filter surface by reversing the flow. The backflush medium will be flushed out through a separate connection. During the backflushing process, the actual filtering process is not interrupted.

RSF F32 with filter cylinder
If the differential pressure has exceeded a set limit or a time interval has expired, the backflush filter automatically opens the backflush circuit in the cleaning unit. Compared to the filter element design (RSF 30), in the filter cylinder design (RSF 32) suction is applied locally through a slot in the rotating cleaning unit at a defined surface element of the filter cylinder (sequential backflushing). The backflush medium will be flushed out through a separate connection. During the backflushing process, the actual filtering process is not interrupted.
Benefits: Your advantages
at a glance (RSf F30)
No filtration interruption during backflushing
Constant filtrate quality
Robust and functional design
High quality, low maintenance and low wear
Ready to use units or skids
Benefits: Your advantages
at a glance (RSf F32)
No filtration interruption during backflushing
High dirt holding capacity
Residue-free cleaning of the entire filter surface with minimized backflush volume
Low-wear and maintenance-friendly
spare parts conceptModern PLC control and/or remote monitoring
Ready to use units or skids
Industries: Where they are used
Application areas: How they are used
Seawater filter FAUDI FAUDI Seawater filter in detail Seawater filters FAUDI front view FAUDI Seawater filter in detail FAUDI backflush filters FAUDI Filtration Skid Unit for seawater filtration
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References: Projects with fully automatic
backflush filters
- Filtration of highly viscous refinery residues under special operating conditionsFor the filtration of highly viscous refinery residues, FAUDI has designed a solution that can be used under special conditions:…
- Slot-type filter for the filtration of pitchFAUDI supplies slot-type filters for the filtration of pitch for a customer in the tank and apparatus construction and general…
- Filtration of nitrogen with FAUDI Jet-Pulse filtersAn Indian petroleum company based in New Delhi uses Jet Pulse filters for the filtration of nitrogen.
- Filtration of light and heavy diesel with FAUDI module filters type F28Filtration of light and heavy diesel with FAUDI module filters type F28 - Fully automatic continuous process - Compact design…
- Seawater filtration with FAUDIOne of the largest producers of offshore oil and natural gas in China and one of the largest independent oil…
- CGO filtration with FAUDI module filters type F27CGO (Coker Gas Oil) filtration with a FAUDI modular filter system type F27 for efficient protection of dirt-sensitive catalyst beds.
- A complete filtration unit for the filtration of seawater in offshore Abu DhabiFAUDI supplied a complete filtration skid unit for seawater filtration for a joint venture company in the United Arab Emirates…
- Seawater filtration in South KoreaFür ein weltweit tätiges EPC-Unternehmen mit umfassender Erfahrung im Bereich Raffinerien, Gas- und petrochemische Anlagen, welches Planungs- und Bauleistungen in…
- HCGO Filtration with FAUDI module filters type F29To protect downstream reactors, a FAUDI modular filter system type F29 ensures continuous and fully automatic filtration operation.