Filter LF
Classic
The Festo LF filter from the Classic range separates condensate and particles from compressed air. With 54 versions in port sizes G 1/8 to G 1 and filter grades of 5 µm (standard) and 40 µm, all common applications are covered. Automatic condensate drains (suffix -A) reduce maintenance demands in systems with high condensate volumes.
Filter grades 5 µm and 40 µm - LF-...-5M for standard cleaning, base type for coarse separation
Automatic condensate drain (suffix -A) - pressure-dependent discharge, no manual emptying required
Port sizes G 1/8 to G 1 - MINI, MIDI, MAXI; matches all other Classic components
Transparent bowl - condensate level and filter condition visible without tools
Modular in-line mounting - direct combination with LR regulators, LOE lubricators and HE/HEE on-off valves
| Version | Filter grade | Drain | Typical use |
|---|---|---|---|
| LF-...-D-MINI/MIDI/MAXI | 40 µm | Manual | Pre-filtration, coarse particles |
| LF-...-D-MINI/MIDI/MAXI-A | 40 µm | Automatic | High condensate, low maintenance |
| LF-...-D-5M-MINI/MIDI/MAXI | 5 µm | Manual | Standard compressed air preparation |
| LF-...-D-5M-MINI/MIDI/MAXI-A | 5 µm | Automatic | Continuous operation, 5 µm grade |
Typical applications: Compressed air preparation at machine tools and assembly lines, protection of valve terminals and proportional valves against particle ingress, condensate separation in humid environments or downstream of refrigeration dryers, and pre-filtration ahead of fine filters (LFMB) and ultra-fine filters (LFMA) in multi-stage filter systems.
