Glass lined Nutsche filter – FPP/GL filter

Nutsche type pressure filters are extensively used to separate solids from liquids with the added benefit of removing impurities.
We provide agitated Nutsche filters operating under pressure and performing multi functions, such as:

  • Inertisation
  • Filtration (solid–liquid separation)
  • Cake smoothing
  • Displacement washing
  • Re-slurry washing
  • Cleaning-in-place (CIP)

All operations are conducted without exposing operators to the products and without contaminating the product itself, ensuring safety and quality at the same time.
We provide special solutions to keep the process fully contained, also during the product’s filling and discharge operations.

To meet even more stricter requirements, such as for aggressive acid conditions, we provide glass lined filters to ensure excellent resistance to corrosion.


Features and options

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  • Filtering surface up to 1 m2
  • Design pressure: – 1 barg to + 6 barg
  • Design temperature: – 25°C to + 200°C

Flat bottom

  • Flanged to the cylindrical vessel, secured with:
    • C-clamps

Filter media

  • Monolayer:
    • Synthetic cloth

Top entry two arms agitator
Designed with special teeth to optimise cake smoothing and product discharge without mechanically damaging the product

Available with:

  • Straight arms
  • “S” shaped arms

Double mechanical seal

  • Flushed
  • Dry running
  • Gas lift off

Side discharge port
Fixed flush to the filter screen and the vessel side wall

Available options:

  • Manually opened hinged plug for discharge into the isolator
  • Hydraulically operated O-ring type discharge hatch

Cleaning-in-place (CIP) systems
The following options are used to wash the internal surfaces in contact with the product:

  • Vessel CIP spray balls
  • Mechanical seal recess spray ring
  • Discharge hatch spray nozzles
  • Discharge hatch seal spray nozzles

Welded waterproof insulation

Chemical, pharmaceutical and sterile versions

Material of contact (MOC) with the product

  • Multipurpose G2208 glass available in blue, light blue and white
  • Thermally conductive G2208 “Phi-Glass” available in blue
  • Electrically conductive G2208 “Sigma Glass” available in blue


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Discharge isolator (up to OEB6)

Pack Off Isolator (up to OEB6)

Temperature control unit (TCU)

  • Steam operated
  • Electrically operated

Other accessories

  • Inerting systems complete with oxygen analysers, available on request
  • PLC automation systems


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Top performing for filtration and washing pharmaceutical products, such as APIs (active pharmaceutical ingredients) and HPAPIs (highly potent active pharmaceutical ingredients), they are extensively used also in other industries, such as:

  • Biochemicals
  • Crop protection
  • Flavours & fragrances
  • Food & beverage
  • Pharmaceutical
  • Polymers
  • Precious and technology metals
  • Waste recovery

Depending on the product and/or application, different enamel types are provided. When the operating conditions are not aggressive, we provide uncoated Nutsche filters in different materials, from stainless steel to titanium.

More about Nutsche filter – FPP filter

Filters can be provided as standalone units or modular turnkey systems to simultaneously satisfy functional needs and efficiency in project costs and execution time.

More about plants

More about processes

For new or innovative applications or to assess the correct sizing, even for consolidated processes, we provide support to customers with testing operations to study product filterability, select filtration media, identify the ideal process parameters and support scale-up.

More about R&D

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