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Line Filter Pi 1907
Nominal pressure 16 bar (230 psi), nominal size 400 up to 6000
1. Features
High performance filters for modern hydraulic system
  • Provided for pipe installation
  • Modular system
  • Compact design
  • Minimal pressure drop through optimal flow design
  • Visual/electrical/electronic maintenance indicator
  • Flanged connections
  • 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
  • 2. Flow rate/pressure drop curve complete filter

    differential pressure Δp [bar]
    x = 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)

    Sm-x 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   25    20(c)    ≥200

    values guaranteed at 5 bar differential pressure

    4. Quality assurance
    MAHLE filters and filter elements are produced according to the following international standards:
    5. Symbols
    6. Types (Example for ordering filters)
    1. Filter type
    2. Number of elements (up to DN 125, 1; DIN 150 and 200 3 ea.)
    3. Nominal pressure
    4. Connection size
    5. Bypass valve
    6. Maintenance indicator E = electrical, M = visual
    7. Magnets (available for flange size DN 100 up to DN 200)
    8. Cover lifting device (available for flange size DN 150, DN 200)
    9. Filter element
    7. Technical specifications
    Design: line mounting filter
    Fitting position: preferable upright
    Nominal pressure: 16 bar (NG 150 and 200 also available with operating pressure 10 bar)
    Connections:
    NG   400   630   800   1250   1800   3500   6000
    DN   50   65   80   100   125   150   200
    Flange connections according to DIN EN 1092-1
    Temperature range: - 10 C to + 100 C
    (other temperature ranges on request)
    Filter housing material: steel welded construction
    Sealing material: NBR (other material on request)
    Bypass setting: Δ p 3.5 bar 10 %
    Maintenance indicator setting: Δ p 2.2 bar 10 %
    Electrical data of maintenance indicator:
    Maximum voltage: 230 V ~/=
    Maximum current: 2.5 A
    Contact load: 60 VA/40 W
    Inrush current: 70 VA
    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 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.

    8. Filter Elements
    9. Dimensions
    *1 illustration shows execution up to flange size DN 125 **1 illustration shows execution up to flange size DN 125
    *2 vent screw **2 vent screw
    *3 "K" height required for element removal **3 "K" height required for element removal
    *4 maintenance indicator visual/electrical **4 drain plug "G"
    *5 drain plug "G" **5 cover lifting device
    *6 Lifting eye; available for versions starting with size DN 100
    Subject to technical alteration without prior notice.
    10. Commissioning
    • Prior to commissioning the filter open the venting screw and wait until iquid emerges. Then tighten the venting screw.
    • After that all sealing points must be optically inspected for leaks.
    • If the maintenance indicator gives a signal when the operating temperature has been reached, the filter element must be exchanged after the end of the shift.
    • For element exchange stop system and relieve filter from pressure. Empty filter over drain plug, remove hex nuts, remove container top, remove hex nut, remove valve plate, remove nut, remove filter element.
    • Clean filter housing using a suitable medium.
    • Clean contaminated filter elements or replace by new MAHLE filters (only Drg-elements are cleanable).
    • Inspect all sealing points and seals and replace by new if required.
    • Assembly is performed in reverse order.
    • Following commissioning inspect all sealing points for leaks.