AF 73 G / AF 93 G

AUTOMATIC METAL EDGE FILTER

AF 73 G / AF 93 G

AUTOMATIC METAL EDGE FILTER

Suitable for all applications where low or high-viscosity liquids or pastes have to be filtered and homogenised.

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CASE STUDY
  • FOOD MARKET

    Chocolate and Honey

    MODEL: AF 73 GAF 93 G

  • INDUSTRIAL MARKET

    – Adhesive Tape, Glue, Paints

    MODEL: AF 73GAF 73 G Stainless SteelAF 73 SAF 93 SAF 93 G

  • COSMETIC MARKET

    MODEL: AF 73 GAF 93 G

  • MECHANICAL MARKET

    – Processing oil
    MODEL: AF 73 G
    – Water
    MODEL: AF 73 G SSAF 93 G SS

These compact inline filter systems can be designed for semi or fully automatic cleaning. The system is cleaned by rotating the filter cartridge against a spring actuated scraper. The AF 93 G version also has integrated preseparation.

Multiple advantages

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    Extended filter

    Extended filter service life due to the use of a cleanable element

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    No interruption

    Cleaning is possible without interrupting filtration

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    Separation quality

    Precise separation quality in accordance with the metal-edge principle

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    Filter cartridge

    Sturdy filter cartridge made of triangular stainless steel wire on a rugged core element

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    Efficient cleaning

    Efficient filter cleaning assures maximum process stability

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    Long service life

    Solid construction and high-quality materials for a long service life

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    Modular system

    Modular system for optimum filter selection (small Vario series)

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    Filter selection

    Modular Filtration Group Vario system for optimum filter selection

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    Wide range of applications

    Material variants open up a wide range of applications

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    Gas-tight shaft

    Gas-tight shaft selas available optional

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    Application in Ex zone

    Application in Ex zone 1 and 2 optional

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    PED

    Certification for Pressure Equipment Directive (PED) according to category III PED EN optional

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    Maintenance

    Easy maintenance

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    Distribution

    Worldwide distribution

Operating principle

The Filtration Group AF 73 G and AF 93 G metal-edge filters belong to the small Vario series. The Filtration Group metal-edge filter system is used to filter and homogenise a wide range of liquids and pastes. This compact, inline filter system consumes no filter material, which means there is also no need for subsequent disposal. The filter is cleaned either automatically or semi-automatically without interrupting operation. The concentrated solids are drained off simply by opening the system for a short time. The medium to be cleaned is guided into the filter housing under pressure or in suction mode. It flows inward through the Filtration Group filter cartridge. The solids are separated on the surface of the triangular filter cartridge wires. The filtered fluid exits the filter housing at the top opposite the inlet connection. In the AF 93 G version, the tangential flow around the tube of the integrated preseparator relieves the load on the filter cartridge from coarse and heavy particles. The filter is cleaned either when a preset differential pressure limit is reached or after a specified cycle time elapses. The Filtration Group filter cartridge is rotated against a spring actuated scraper for this purpose. The special gap geometry of the filter cartridge guarantees efficient cleaning. The particles or agglomerates are skimmed from the surface and settle in the collection cone. The patented filter cartridge bearing (AKF system) prevents high axial forces and facilitates the cleaning process. The residue that has settled in the collection cone can be emptied via the drain valve either when the machine is at a standstill or during filtration.

  • Optimal cleaning with sharpedged triangular wire
  • Large effective filter surface
  • Precise, small gap widths
  • High differential pressure stability and torsional strength
  • Different material combinations possible
Element coiled cartridge
  • High wear resistance to abrasive media
  • Sturdy trapezoidal profile for high-viscosity media
  • Continuous welded design
  • Manufactured in stainless steel
Element welded cartridge
  • Specified sharp-edged hole diameter
  • Asymmetric hole pattern
  • Suitable for filtering fibrous waste material
  • Manufactured in stainless steel or nickel
Element perforated foil
AF-73-G-AF-93-G-operating

Technical data

Max. operating pressure:

16 bar
Max. operating temperature:

100°C
Cover fastening:

4 x M20 hexagon screws
Drive shaft sea:

Lip seal with O-ring

Connections and nominal diameters:

A-inlet:

DN 50 + internal thread G2
B-outlet:

DN 50 + internal thread G2
F-gauge:

G1
G-indicator:

G1/8
threaded holes acc. to DIN 3852 Z:

AF-73-G-AF-93-G-technical

Materials:

Housing and cover:

Stainless steel 1.4581
Optional certificate acc. to EN 10204-3.1:

Internals:

stainless steel 1.4581/1.4571
Bearing bushes:

PTFE based
Seals:

FPM (Viton)
Coiled cartridge:

1.4571 or 1.4571/Al
Welded cartridge:

1.4571 (∆p max. 10 bar)
Perforated foil:

1.4571 or Al, 1.4571 or Al, Ni (∆p max. 10 bar)
AF-73-G-AF-93-G-technical

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Performance curves

AF-73-G-AF-93-G-curves

Viscosity in 1 mm²/s
Viscosity in 33 mm²/s
Viscosity in 100 mm²/s
Viscosity in 500 mm²/s

y = volumetric flow V [l/min]
x = gap width f [µm]

The curves represent the volumetric flow through the entire filter system (filter housing including one filter element as an example) and refer to a differential pressure of 0.3 bar. Specific information about process data is essential for reliable operation of automatic filters.

Important information about the performance curve! This is an example of a filter element of the type AF6016. The number of filter elements can be read from the type number key, see section 6.

The curves represent the volumetric flow through the entire filter system (filter housing including one filter element as an example) and refer to a differential pressure of 0.3 bar. Specific information about process data is essential for reliable operation of automatic filters.

Important information about the performance curve! This is an example of a filter element of the type AF6016. The number of filter elements can be read from the type number key, see section 6.

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