Low Pressure Filter/Suction Filter Pi 1941

Filtration Group


Related Documents:
Spec/Diagram PDF

Item Information:

High performance filters for modern hydraulic systems.  Nominal pressure 10/25 bar (140/360 psi), up to nominal size 63.

  • Provided for pipe installation
  • Modular system
  • Compact design
  • Minimal pressure drop through optimal flow design
  • Visual maintenance indicator
  • Threaded connections
  • Quality filters, easy to service
  • Equipped with highly efficient glass fibre Sm-x and Mic filter elements
  • Beta reated elements according to ISO 16889 multipass test
  • Elements with high differential pressure stability and dirt holding capacity
  • Worldwide distribution

Flow rate/pressure drop curve complete filter

3. Separation grade characteristics 4. Filter performance data

x=particle size µm}

determined by multipass tests (ISO 16889)
calibration according to ISO 11171 (NIST)

tested according to ISO 16889 (multipass test)

Sm-x-Elements with
max.Δ p 5 bar

Sm-x 10 ß10(c)≥75

values guaranteed up to
5 bar differential pressure

5. Quality assurance
Filtration Group filters and filter elements are produced according to the following international standards:
6. Symbols
7. Order Numbers
8. Technical specifications
Design: line mounting filter
Nominal pressure*: 10 bar (140 psi)
Test pressure: 13 bar (180 psi)
Temperature range: -10°C to + 120°C
  (other temperature ranges on request)
Filter head material: GDAL
Spin-on cartridge material: St
Sealing material: NBR
Installation position: perferably vertical
Indicating range pressure manometer: 0 to 10 bar
Indicating range vacuum gauge: -1 to 0 bar

*For the combination of the housing designs as per 7.1 with medium-pressure spin-on cartrdiges at 25 bar presure refer to datasheet "spin-on cartridges" for dimensions and specifications.

We draw attention to the fact that all values indicated are average values and do not always occur in specific cases of application. Our products are continually being further developed. Values, dimensions and weights can change as a result of this. Our specialized department will be pleased to offer you advice.

We recommend you to contact us concerning applications of our filters in areas governed by the EU Directive 94/9 EC (ATEX 95).The standard version can be used for liquids based on mineral oil(corresponding to the fluids in Group 2 of Directive 97/23 EC Article9). If you consider to use other fluids please contact us for additional support.

1 = pressure gauge
2 = vacuum gauge
Subject to technical alteration without prior notice.

9. Dimensions
10. Installation, operating and maintenance instructions
10.1 Filter installation
When installing the filter make sure that sufficient space is available to remove the spin-on cartridge.Preferably the filter should be installed with the spin-on cartridge pointing downwards.
10.2 When should the spin-on cartridge be replaced?
1 . Filter equipped with the vacuum gauge for suction-side installation: During cold start the vacuum gauge may for a short period indicate > 0.2 bar. With increasing operating temperature the indicator needle must drop clearly below the 0.2 bar mark.Should this not be the case, the spin-on cartridge must be replaced after the end of the shift.
2 . Filters without maintenance indicator: The spin-on cartridge should be replaced after the trial run or flushing of the system. Afterwards follow instructions of the manufacturer.
3 . Please always ensure that you have original Filtration Group spare cartridges in stock.
10.3 Change of spin-on cartridge
1 . Stop system and relieve filter from pressure.
2 . Unscrew the spin-on cartridge with the aid of a belt spanner by turning same to the left.
3 . Make sure that the order number on the new spin-on cartridge corresponds to the order number of the name-plate.
4 . The seal of the spin-on cartridge should be lightly oiled.
5 . Screw cartridge on in accordance with the printed-on instructions.
11. Spare parts list