AF 113 G backflush filter

AUTOMATIC FILTER

AF 113 G backflush filter

AUTOMATIC FILTER
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  • MECHANICAL MARKET

    Suitable for all applications where low-viscosity liquids have to be filtered.

These compact, inline filter systems are designed for automatic cleaning. The system is cleaned by rotating the filter element and backflushing with internal pressure media.

Cast design with internal pressure cleaning and integrated cyclone effect

CONNECTION SIZES: G2, SCREW IN FLANGE DN 50 AND DN 65

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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    Top-quality

    Top-quality, asymmetric filter medium made of multiple-sintered stainless steel fleece 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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    Minimal loss

    Minimal liquid loss during cleaning

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    Shaft seals

    Gas-tight shaft seals available optional

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    Backflush pulse

    Filter cleaned one segment at a time with a high backflush pulse

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    Indicator

    Actual filter rating and nominal separation are indicated

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    Integrated preseparation

    Integrated preseparation thanks to tangential inflow and preseparator tube

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    Wide range of applications

    Material variants open up a wide range of applications

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    Modular system

    Filtration Group modular Vario system for optimum filter selection

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    Application in Ex zone

    Application in Ex zone 1 and 2 optional

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    Maintenance

    Easy maintenance

Operating principle

The Filtration Group (ex Mahle) AF 113 G backflush filter belongs to the Vario series. The compact Filtration Group automatic filter system is used for fine and micro-filtration of a variety of low-viscosity liquids.

This inline pressure filter consumes no filter material, which means there is also no need for subsequent disposal. The filter is cleaned 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 and flows inward through the Filtration Group segmented element. Particles settle on the surface of the filter medium. The filtered fluid exits the filter housing at the top opposite the inlet connection.

The integrated preseparator relieves the load on the segmented element, particularly from coarse and heavy particles. This is achieved by a tangential flow around the preseparator tube and the deflection edges.
The filter is cleaned when a preset differential pressure limit, a set interval or a defined filtered fluid quantity is reached. The segmented element is turned as the cleaning valve is opened. The segments are then guided one at a time past the flushing channel on the outer circumference, causing them to open and close alternately. The internal pressure is built up at a throttling point downstream of the filter, so that when one segment opens, an outward surge cleans the separated particles from the filter material. As a result of this pulse cleaning principle, the particles are catapulted out, collected in the flushing channel and discharged with a small amount of internal medium. One turn is sufficient to clean all segments. 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.

All filters of the Filtration Group Vario series are protected by various patents.

Good cleanability due to asymmetric design
High free surface portion
Defined particle retention
Several material combinations possible

topmash

Higher contamination levels because of pleated filter area
Complete stainless steel
Higher flow rate compared to standard elements
Specially for filter fineness < 60 µm
Filter media (wire mesh) made of 1.4401

Wave element
AF-112G-operating

Technical data

Max. operating pressure:

16 bar
Max. operating temperature:

100°C
Cover lock:

4x M20 hexagon screws
Drive shaft seal:

Lip seal with O-ring
External finish:

Synthetic resin primer, blue acc. to RAL 5007

Connections and nominal diameters:

A-inlet:

G2 threaded holes DIN 3852 form X
B-outlet:

G2 threaded holes DIN 3852 form X
C-drain:

G2 threaded holes DIN 3852 form X
AF-112G-tech
E-backflush:

G1 threaded holes DIN 3852 form Z
F-gauge:

G-indicator:

G1/8

Materials:

Housing and cover:

nodular cast iron
Internals:

nodular cast iron, steel
Bearing bushes:

PTFE basis
Seals:

FPM (Viton)
Segmented element:

1.4571/Al or 1.4571/Alhc (∆p max. 10 bar)
Wave element:

1.4401
AF-112G-tech

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    Performance curves

    AF-112G-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.

    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.

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