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Gravity filter INTERFILT® SK

Filtration capacity 6.5 – 62.0 m3/h

The gravity filter INTERFILT SK is an open sand filter system for extremely economical water treatment. The filter system operates with differential pressure-controlled backflushing and an integrated backflushing water tank.

Product description

Economical water treatment with gravity filters - using the gravity of the water alone.

The automatic gravity filter uses the principle of differential pressure and essentially consists of the cylindrical tank, its fittings, the automatic backwashing system with injector, the raw water feed and baffle tube, filter nozzles and filter filling unit

Your benefits

  • No controls: The filter needs no moving parts, like valves, flow meter, controller or display equipment, for filtering/backwashing and post-rinsing
  • No pumps: The required volume of backwashing water is stored in the storage tank below the filter, making a back-flushing pump redundant.
  • No compressed air, pressurised water and electrical energy: The filter controls and performs all processes independently
  • No operating personnel: The filter works fully automatically, without external intervention
  • No wearing parts: No moving parts – no wear and tear.

Technical Details

  • Material: Polyethylene PE-HD
  • Filter material: Filter sand DIN EN 12904, other filter materials on request

The filter essentially consists of:

  • Cylindrical tank
  • Fittings
  • Automatic backwashing system with injector
  • Raw water feed and baffle tank
  • Filter nozzles and
  • Filter filling unit

Type List and Capacity Data

Type

Filter diameter

Filter capacity

Back wash Water

Weight empty

Weight in operation

mm

m3/h

m3

t

t

SK- 9

900

6.5

1.4

1.2

4.5

SK- 12

1,200

11.5

2.5

1.5

7.1

SK- 15

1,500

18.0

4.5

1.9

10.5

SK- 18

1,800

26.0

5.5

2.3

15.0

SK- 21

2,100

35.0

8.5

2.8

19.5

SK- 24

2,400

46.0

10.0

3.0

25.0

SK- 28

2,800

62.0

14.0

3.5

30.0

Flow speed:3 … 10 m/h
Backflushing interval: (depending on the type and quantity of dirt)approx. 8 … 36 h
Pressure loss:120 … 150 mbar
Ultra-pure water solids values: (depending on raw water and filter medium)0 … 3 mg/l
Speed of backflushing:
At start44 m/h
Half way through37 m/h
At end30 m/h
Cylinder height: (same for all types)4,500 mm
Overall height: (depending on filter diameter)6,500 mm
Backflushing and refill time:13 … 15 min.
Filter sand as per DIN EN 12904
– Layer height600 mm
– Grain size0.71 … 1.25 mm
Filter nozzles:
– TypeLamellar nozzle
– MaterialPPN
– Gap width0.2 mm

As system components are produced individually according to application, we will inform you of prices on request.

We reserve the right to change components and their construction, as long as these do not affect their performance or function.

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Overview

Economical water treatment with gravity filters - using the gravity of the water alone.

The automatic gravity filter uses the principle of differential pressure and essentially consists of the cylindrical tank, its fittings, the automatic backwashing system with injector, the raw water feed and baffle tube, filter nozzles and filter filling unit

Your benefits

  • No controls: The filter needs no moving parts, like valves, flow meter, controller or display equipment, for filtering/backwashing and post-rinsing
  • No pumps: The required volume of backwashing water is stored in the storage tank below the filter, making a back-flushing pump redundant.
  • No compressed air, pressurised water and electrical energy: The filter controls and performs all processes independently
  • No operating personnel: The filter works fully automatically, without external intervention
  • No wearing parts: No moving parts – no wear and tear.

Application

Technical Data

Downloads

Contact us

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+49 6221 842 0  Send request   

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