Duplex Pressure Filters (Hydac)

Suitable for operation between 2.5 and 420 bar, the Hydac range of duplex pressure filters is widely used across industry in heavy, mobile and small-scale hydraulics systems.

DFDK-Series

  • Nominal pressure:
    • 160 bar (DFDK with type code 3.X)
    • 315 bar (DFDK with type code 1.X and 2.X)
  • Fatigue strength: At nominal pressure 106 cycles from 0 to nominal pressure
  • Temperature range:
    • -10° C to 100° C
    • -30° C to -10° C: pmax= 157.5 bar
  • Material of filter head: EN-GJS-400-15
  • Material of filter bowl: Steel
  • Type of clogging indicator: VD (differential pressure measurement up to 420 bar operating pressure)
  • Pressure setting of the clogging indicator: 8 bar (others on request)

FMND-Series

  • Nominal pressure:
    • 210 bar (FMND 160 to 400)
    • 250 bar (FMND 40 to 140)
  • Fatigue strength: At nominal pressure 106 cycles from 0 to nominal pressure
  • Temperature range: -10° C to 100° C
  • Material of filter head: EN-GJS-400-15
  • Material of filter bowl: Steel
  • Type of indicator:
    • VM (Diff. pressure indicator up to 210 bar operating pressure)
    • VD (Diff. pressure indicator up to 420 bar operating pressure)
  • Pressure setting of the clogging indicator: 2.5 bar or 5 bar (others on request)
  • Bypass cracking pressure (optional): 3.5 bar or 7 bar (others on request)

RFLD-Series

  • Nominal pressure:
    • 16 bar (RFLD 2701)
    • 25 bar (RFLD 331-1321, 853)
    • 40 bar (RFLD 111-241, 503, 662-1322)
    • 64 bar (RFLD 332-502)
  • Temperature range: -10 °C to +100 °C
  • Material of filter housing and cover plate: EN-GJS-400-15: = 1
  • Material code (final digit of filter size): EN-GJS-400-18LT: = only RFLD 2701; GP 240 GH+N: = 2; Stainless steel 1.4581: = 3
  • Type of clogging indicator: VM (differential pressure measurement up to 210 bar operating pressure)
  • Pressure setting of the clogging indicator: 2 bar (others on request)
  • Bypass cracking pressure: 3 bar (others on request)

FLND-Series

  • Nominal pressure:
    • 25 bar (FLND 160 to 400)
    • 63 bar (FLND 40 to 140)
  • Fatigue strength: At nominal pressure 106 cycles from 0 to nominal pressure
  • Temperature range: -10° C to 100° C
  • Material of filter head: Aluminium
  • Material of filter bowl: Aluminium (FLND 100 and 140: Steel)
  • Type of clogging indicator: VM (differential pressure measurement up to 210 bar operating pressure)
  • Pressure setting of the clogging indicator: 2.5 bar or 5 bar (others on request)
  • Bypass cracking pressure (optional): 3.5 bar or 7 bar (others on request)

Speak to our filtration technology division about your factory automation requirements.

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