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)