Low Pressure Filter Pi 230

Filtration Group


Related Documents:
Spec/Diagram PDF

Item Information:

High performance filters for modern hydraulic system.  Nominal pressure 25/40 bar (360/570 psi), nominal size 1400.

  • Provided for pipe installation
  • Modular system
  • Compact design
  • Minimal pressure drop through optimal flow design
  • Visual/electrical/electronic maintenance indicator
  • Quality filters, easy to service
  • Equipped with highly efficient glass fibre Sm-x filter elements
  • Beta rated 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


y = differential pressure Δp [bar]
x = flow rate V [l/min]
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. Δp 20 bar
Sm-x    3     ß5(c)    ≥200
Sm-x    6     ß7(c)    ≥200
Sm-x    10   ß10(c)   ≥200
Sm-x    25   ß20(c)   ≥200
Values guaranteed up to
10 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
Nominal pressure (107 LW): 25 bar (360 psi)
Nominal pressure (static): 40 bar (570 psi)
Temperature range: -10 °C to +120 °C
  (other temperature ranges on request)
Bypass setting: Δp 3.5 bar ± 10 %
Filter head and cap material: GAL
Filter housing material: AL
Sealing material: NBR
Maintenance indicator setting: Δp 2.2 bar ± 0.3 bar
Electrical data of maintenance indicator:  
Maximum voltage: 250 V AC/200 V DC
Maximum current : 1 A
Contact load: 70 W
Type of protection (suction side) IP 65 in inserted and
  secured status
Contact: normally open/closed
Cable connection: M20x1.5

The switching function can be changed by turning the electric upper part by 180° (normally closed contact or normally open contact). The state on delivery is normally closed contact. By nductivity in the direct current circuit the use of suitable protection circuit should be considered. Further maintenance indicator details and designs are available in the maintenance indicator data sheet.

We draw attention to the fact that all values indicated are average values which 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 94/4 EC (ATEX 95). The standard version can be used for liquids based on mineral oil (corresponding to fluids in Group2 of DirectiveDirective 97/23 EC Article 9). If you consider to use other fluds please contact us for additional support.

* Subject to technical alteration without prior notice.

In = Inlet
Out= Outlet

9. Dimensions
10. Installation, operating and maintenance instructions
10.1 Filter installation
When installing filter make sure that sufficient space is available to remove filter element and filter housing. Preferably the filter should be installed with the filter housing pointing upwards. The maintenance indicator must be visible.
10.2 Connecting the electrical maintenance indicator
The electrical indicator is connected via a 2-pole appliance plug according to DIN EN 175301-803 with poles marked 1 and 2. The electrical section can be inverted to change from normally open to normally closed position or vice versa.
10.3 When should the filter element be replaced?
1. Filters equipped with visual and electrical maintenance indicator: During cold starts, the indicator may give a warning signal. Press the red button of the visual indicator once again and only after operating temperature has been reached. If the red button immediately pops up again and/or the electrical signal has not switched off after reaching operating temperature, the filter element must be replaced after the end of the shift.
2. Filters without maintenance indicator: The filter element should be replaced after the trial run or flushing of the system. Afterwards follow the instructions of the manufacturer.
3. Please always ensure that you have original Filtration Group spare elements in stock: Disposable elements (Sm-x, Sm-N) cannot be cleaned.
10.4. Element replacement
1. Stop system and relieve filter from pressure.
2. Loosen quick-action clamp, remove cover and open drain valve. Housing completely vented.
3. Remove filter element from filter housing.
4. Check seals for damages. Replace, if necessary.
5. Make sure that the order number on the spare element corresponds to the order number of the filter name-plate. To ensure no contamination occurs during the exchange of the element first open the plastic bag and push the element over the spigot in the filter head. Now remove plastic bag.
6. Close drain valve. Put the thumb screw together with the cover on the centre rod and tighten strong. Filter must be bleeded.
11. Spare parts list