Stainless Steel High Pressure Filter Pi 480

Filtration Group


Related Documents:
Spec/Diagram PDF

Item Information:

High performance filters for modern hydraulic systems.  Nominal pressure 450/250 bar (6425/3570 psi), nominal size 40 up to 250.

  • 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 glass fibre Sm-x/PS filter elements according to DIN 24550
  • 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


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/PS vst elements with
max. Δp 210 bar
Sm-x/PS vst    3     ß5(c)    ≥200
Sm-x/PS vst    6     ß7(c)    ≥200
Sm-x/PS vst    10   ß10(c)   ≥200
Sm-x/PS vst    16   ß15(c)   ≥200
Sm-x/PS vst    25   ß20(c)   ≥200
Values guaranteed up to
20 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: in-line filter
Nominal pressure: 2x 10^6 load changes 450 bar
NG 40 up to 100  (6425 psi)
NG 160 and 250 250 bar (3570 psi)
Test pressure:  
NG 40 up to 100 700 bar (10000 psi)
NG 160 and 250 325 bar (4640 psi)
NG 40 up to 100 G1
NG 160 and 250 G1
Temperature range: -10 °C to +120 °C
  (other temperature ranges on request)
  TP 316/TP 316 L
Filter head and housing material: (1.4401/1.4404)
  (other materials on request)
Sealing material: NBR/PTFE
Maintenance indicator setting: Δp 5 bar ± 10 %
Electrical data of maintenance indicator:  
Maximum voltage: 250 V AC/200 V DC
Maximum 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 and not 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 to contact us concerning applications of our filters in areas governed by the EU Directive 94/9 EG (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 EG Article 9). If you consider to use other fluids please contact us for additional support.

* 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 filter element and filter housingl. Preferably the filter should be installed with the filter housing pointing downwards. 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 DlN EN 175301-803 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 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 only after operating temperature has been reached. lf 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 instructions of the manufacturer.
3. Please always ensure that you have original Filtration Group spare elements in stock: Disposable elements (Sm-x/PS) cannot be cleaned.
10.4. Element replacement
1. Stop system and relieve filter from pressure.
2. Unscrew the filter housing by turning counter-clockwise. Clean the housing using a suitable cleaning solvent.
3. Remove element by pulling down carefully.
4. Check o-ring and spigot for damage. 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. Lightly lubricate the thread of the filter housing and screw onto the filter head completely. After that unscrew the filter housing 1/8 to 1/2 return.
11. Spare parts list