Tank Top Return-Line Filter Pi 5000

Filtration Group


Related Documents:
Spec/Diagram PDF

Item Information:

High performance filters for modern hydraulic system.  Nominal size 40 up to 100  according to DIN 24550.

  • Provided for tank top installation
  • Modular system
  • Compact design
  • Minimal pressure drop through optimal flow design
  • Visual/electrical/electronic maintenance indicator
  • Threaded connections
  • Quality filters, easy to service
  • Equipped with highly efficient Mic oder PS filter elements
  • Beta rated elements according to ISO 16889 multipass test
  • Elements with high differential pressure stability and dirt holding capacity
  • NPT- and SAE-connections on request
  • Worldwide distribution

Flow rate/pressure drop curve complete filter

Pi 5000 Flow rate/pressure drop curve complete filter
y=differential pressure Δp [bar]
x=air flow rate V [l/min]
3. Separation Grade Characteristics 4. Filter Performance Data

Y = beta-value
x = particle size [µm]

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

tested according to ISO 16889 (multipass test)
PS elements with
max. Δ p 10 bar

PS   3 ß3  ≥75
PS   6 ß6  ≥75
PS 10 ß10 ≥75
PS 16 ß16 ≥75
PS 25 ß25 ≥75

values guaranteed up to
10 bar differential pressure

5. Quality Assurance
Filtration Group filters and filter elements are prodcued according to the following international standards:
6. Symbols
7. Order Numbers
Example for ordering filters:

* a wider range of executions is available on request.

* a wider range of element types is available on request
8. Technical specifications
Design: tank top installation
Nominal pressure: 10 bar (140 psi)
Test pressure: 13 bar (180 psi)
Temperature range: -10 °C to +80 °C
  (other temperature ranges on request)
Bypass setting: 3.5 bar ± 10%
Filter head material: GD Al
Filter housing material: plastic
Sealing material: plastic
Maintenance indicator setting 2.2 bar ± 10 %
PiS 3084/85:  
Electrical data of maintenance indicator:  
Max. voltage: 250 V AC/200 V DC
Max. current: 1 A
Contact load: 70 W
Type of protection: IP 65 in inserted and
secured status
Contact: normally open/closed
Cable sleave: 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 a normally closed contact. By inductivity 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.

With the inrush current of 70 VA the indicator can trigger small contactors or contactor relays.Inductivity in the direct current may require the use of a signal suppressor.

Recommended max. flow rate of the filling unit at viscosity of 500 mm2/s and a degree of filtration 3 µm: NG 40 = 8 l /min, NG 63 =15 l /min, NG 100 = 25 l /min.

1 = Standard maintenance indicator visual PiS 3084
1 + 2 = Standard maintenance indicator electrical PiS 3085
3 = Pressure switch
4 = Pressure gauge 0 to 6 bar
5 = Quick release coupling for filing
9. Dimensions
All dimensions except "D" in mm.

* NPT- and SAE- connections on request
10. Installation, operating and maintenance instructions
10.1 Filter installation

When installing the filter make sure that:
a) that sufficient space is available to remove filter element and filter housing,
b) the mounting hole in the tank top is not excessively large, to ensure proper sealing,
c) the filter is free of tension after installation
Preferably the filter should be installed with the filter housing pointing downwards. In this position the visual pressure indicator is accessible and visible.

10.2 Connecting the electrical pressure indicator

The electrical pressure indicator is connected via a 2-pole appliance plug according to DlN EN 17 5301-803 with poles marked 1 and 2. The electrical section can be inverted to change from normally open position to normally closed position or vice versa.

10.3 When must the filter element be replaced?

1. Filters equipped with visual and/or electrical pressure indicator:
During cold starts, the indicator may give a warning signal.Press the button of the visual indicator once again 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 pressure indicator:
The filter element should be replaced after trial run or flushing of the system. Afterward follow instructions of the manufacturer.
3. Please always ensure that you have original Filtration Group spare elements in stock: Disposable elements (PS and Mic) cannot be cleaned.

10.4 Element replacement
1. Stop system and relieve filter from pressure.
2. Unscrew cover, turning counter clockwise.
3. Remove filter housing and filter element by pulling upwards.
4. Remove filter element with a side-to-side motion.
5. Clean the housing using a suitable cleaning solvent.
6. Check O-ring on filter cover and filter housing for damage. Replace, if necessary.
7. Make sure that the order number on the spare element corresponds to the order number of the filter name-plate.
8. Remove filter element from the plastic bag and reassemble filter in reverse order (items 1 to 6).

Subject to technical alteration without prior notice.

11. Spare parts list