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Tank top return-line filter Pi 5000
Nominal size 160 up to 1000 according DIN 24550
1. Features
High performance filters for modern hydraulic systems
  • Provided for tank top installation
  • Modular system
  • Compact design
  • Minimal pressure drop through optimal flow design
  • Visual/electronic/electronical maintenance indicator
  • Threaded and flanged connections
  • Quality filters, easy to service
  • Equipped with highly efficient glass fibre Sm-x/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- connectons on request
  • Worldwide distribution
2. Flow rate/pressure drop curve complete filter
y = differential pressure Δp [bar]
x = flow rate V [l/min]

*1 - 6
1. Sm-x 3
2. Sm-x 6
3. Sm-x 10
4. Sm-x 16
5. Sm-x 25
6. Mic 10

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/PS Elements with
max.Δ p 10 bar

Sm-x  3  5(c)  ≥200
Sm-x  6  7(c)  ≥200
Sm-x  10  10(c)  ≥200
Sm-x  16  15(c)  ≥200
Sm-x  25  20(c)  ≥200

values guaranteed up to
10 bar differential pressure

5. Quality assurance
MAHLE filters and filter elements are produced according to the following international standards:
6. Symbols
7. Order Numbers
Example for ordering filters:

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: Δp 3.5 bar 10%
Filter head material: GD Al
Filter housing material: St.
Filter cover material: GD Al/G Al
Maintenance indicator setting Δp 2.2 bar 10 %
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.

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 Article 9).If you consider to use other fluids please contact us for additional support.

Subject to technical alteration without prior notice.

1 = Standard maintenance indicator visual
PiS 3084
1 + 2 = Standard maintenance indicator electrical
PiS 3085
3=Further executions see data sheet maintenance indicator
4 = Pressure switch
4 + 5 = Can be mounted at I or II alternatively
5 = Pressure gauge
6 = Coupling for filling

9. Dimensions
All Dimensions except "L" in mm.
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 filterhousing,
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 maintenance indicator is accessible and visible.

10.2 Connecting the electricalmaintenance indicator
The electrical maintenance 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 maintenance 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 maintenance 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 MAHLE spare elements in stock: Disposable elements (Sm-x 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