

how does a
precoat filter
work?
The FAUDI precoat filter consists of a pressure vessel and is divided into a dirty and clean part by an intermediate plate in which the filter elements are installed. The dirty medium is filtered through the filter elements, whereby the flow through the filter elements is from the outside to the inside. However, before the actual filtration of the contaminated medium begins, the filter elements must be precoated with filter aid. During the so-called precoating process, the filter aid is deposited on the filter elements and forms a precoat layer, which ultimately constitutes the filtration fineness. Depending on the filter aid used and the dirt content of the medium to be filtered, filter fineness between 3 and 10 µm can be achieved. After the precoating process, the actual filtration starts automatically. When the maximum filtration time is reached, the filter elements are completely cleaned by an automatic backwash and are available for a new cycle.

Precoating
The filter pump takes the dissolved mixture of filter aid and clean medium from the precoat tank and applies it to the filter cartridge. The mixture flows through the filter cartridges from the outside to the inside. This precoating process is carried out until a sufficient layer of filter aid has built up on the cartridge.
Filtration
During filtration, the contaminated medium is taken from the dirt tank after the precoating process, applied to the filter elements and flows through from the outside to the inside. During the filter cycle, the dirt particles accumulate on the precoat layer.
Regeneration
When the maximum differential pressure between the dirty and clean sides of the filter is reached or a preset filtration time is reached, automatic regeneration or backwashing is initiated.
Benefits: YOUR ADVANTAGES
AT A GLANCE
Can be used for different
processing methodsHighest possible
filtration qualityCompact and durable
designEspecially economical for
large volumetric flow ratesFlexible operation, adaptable to
different operating conditionsLong service life
Industries: Where they are used
Application areas: how they are used
Precoat filter system ASAV32 double Precoat filter ASAV32 double front view FAUDI Precoat filter for mozzarella brine Precoat filter type ASSF
Start into your next
PROJECT WITH US now
We are your contact for engineering, piping design as well as monitoring and control.
References: Projects with precoat filters
- Cooling lubricant filtration with a total volume of 450,000 litersFAUDI has developed a customized filtration system for our customer, a major global rolling mill manufacturer.
- Everything from a single source – Coolant filtration in a high-tech engine plantMore than 160 machine tools (application: turning, drilling, milling of crankcases for diesel and gasoline engines, medium: oil) are supplied…
- Oil filtration with FAUDI backflush filtersOur customer, a world-renowned supplier to the automotive industry, uses FAUDI backflush filters for cooling lubricant filtration at its site…
- Filtration of oil with FAUDI Regenerable MicrofiltersFAUDI's patented regenerable microfilters at a German manufacturer of transmissions and transmission components for passenger cars and light commercial vehicles.
- Precoat filtration for mozzarella brineFor a customer in mozzarella production, FAUDI has developed an individual solution according to the customers requirements. Precoat filtration is…
- Filtration of Grinding Oil with FAUDI Precoat FiltersEiner der 20 größten Automobilzulieferer der Welt vertraut auf FAUDI Anschwemmfilter.