Duplex filter / Change over filter

Duplex filter
Change over filter

Krone filter manufactures four different types of duplex filters / change over filters. The main difference is the switching device

  • Type KDF-K - Duplex filter DN15-250 / ½“-10“ uses a so called cock switch
  • Type KDF-VB - Duplex filter DN50-1000 / 2“-40“ with maintenance-friendly butterfly valve switching
  • Type KDF-V - Duplex filter DN100-600 / 4“-24“ with smooth valve switching
  • Type KDF-W - Duplex filter DN15-1000 / ½“-40“ with smooth ball valve switching

Duplex filters can use basket strainers or other kind of filter inserts as filtering media like bags (bagfilters) or cartridges which can be made of different materials beginning from metalls up tp PP, PE, PTFE or glassfibres ect.

KDF-K

Duplex filter

  • Duplex filter DN15-250 / ½“-10“
  • Made of ductile cast iron GGG-50/ EN GJS-500-07 or Bronze
  • Many sizes available from stock
  • Available with Quick-release clamp
  • Space saving design

The KDF duplex filter can be used universally as a coarse and fine filter on the suction or on the pressure side. Filter operation is maintained without interruptions during the cleaning phase. The duplex filter is cast as one part consists of two identical single filters which can be operated alternatively or in parallel via a changeover fitting.

The single filter consists of a cast body, cover and filter insert. The filter insert is a basket strainer made of perforated sheet metal covered with a mesh made of different materials and mesh sizes. The medium to be filtered enters the filter from above, generally flowing through the insert from the inside outward. Impurities are caught in the strainer insert, accordingly.

Lloyd's Register Type Approval certificate ( PDF)

Krone key products are Lloyds Register LR Type approval (Ta) and have design appraisal.

Lloyd's Register Design Appraisal Document ( PDF)

Krone key products are Lloyds Register LR Type approval (Ta) and have design appraisal.

Krone Filter Solutions GmbH

We are a leading international filter manufacturer. We can provide the right filter for any application!

KDF-VB

Duplex filter

  • Duplex filter DN50-1000 / 2“-40“ with maintenance-friendly butterfly valve switching
  • Made of ductile cast iron GGG-50/ EN GJS-500-07 (optional with rubber lining inside), Bronze, Steel, Stainless steel, GRP and more
  • Many sizes available from stock
  • Available with Quick-release clamp
  • Tailor made customized solutions

The KDF-VB duplex filter can be installed in pressure and in suction line and is versatile for coarse and fine filtration. It is characterized by continuous operation during the cleaning phase. The duplex filter comprises two identical single filters connected via a valve-switching device with butterfly valves, which can be switched to only one filter body or can be operated in parallel.

Each single filter consists of a cast or welded body, cover and filter insert. The filter insert is a basket strainer or ring type strainer made of perforated plate covered with a stainless steel mesh. The medium to be filtered enters the filter basket from the top and flows through the insert inside out. Dirt thus remains in the filter element.

Krone Filter Solutions GmbH

We are a leading international filter manufacturer. We can provide the right filter for any application!

KDF-V

Duplex filter

  • Duplex filter DN100-600 / 4“-24“ with smooth valve switching
  • Made of ductile cast iron GGG-50/ EN GJS-500-07 (optional with rubber lining inside) or Bronze
  • Available with Quick-release clamp

The KDF duplex filter can be used universally as a coarse and fine filter on the suction or on the pressure side. Filter operation is maintained without interruptions during the cleaning phase. The double filter is cast as one part consists of two identical single filters which can be operated alternatively or in parallel via a changeover fitting.

The single filter consists of a cast or welded body, cover and filter insert. The filter insert is a basket strainer made of perforated sheet metal covered with a mesh made of different materials and mesh sizes. The medium to be filtered enters the filter from above, generally flowing through the insert from the inside outward. Impurities are caught in the strainer insert, accordingly.

Lloyd's Register Type Approval certificate ( PDF)

Krone key products are Lloyds Register LR Type approval (Ta) and have design appraisal.

Lloyd's Register Design Appraisal Document ( PDF)

Krone key products are Lloyds Register LR Type approval (Ta) and have design appraisal.

Krone Filter Solutions GmbH

We are a leading international filter manufacturer. We can provide the right filter for any application!

KDF-W

Duplex filter

  • Duplex filter DN15-1000 / ½“-40“ with smooth ball valve switching
  • Tailor made customized solutions (e.g. special closures or heating jacket)
  • Made of Steel, Stainless steel, GRP and more

The KDF duplex filter can be used universally as a coarse and fine filter on the suction or on the pressure side. Filter operation is maintained without interruptions during the cleaning phase. The double filter is cast as one part consists of two identical single filters which can be operated alternatively or in parallel via a changeover fitting.

The single filter consists of a cast or welded body, cover and filter insert. The filter insert is a basket strainer made of perforated sheet metal covered with a mesh made of different materials and mesh sizes. The medium to be filtered enters the filter from above, generally flowing through the insert from the inside outward. Impurities are caught in the strainer insert, accordingly.

Krone Filter Solutions GmbH

We are a leading international filter manufacturer. We can provide the right filter for any application!

Trade fair dates

IFAT 2024 München

IFAT 2024 München

Visit us on the IFAT 2024 Munich, Germany - 13th – 17th May 2024 Hall A2 / Stand 414 - World's Leading Trade Fair for Water, Sewage, Waste and Raw Materials Management.

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Krone Filter Solutions, Germany

We are a leading international filter manufacturer.
We can provide the right filter for any application!

Call us: +49 4207 987690

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