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Festo LFR-1/4"-D-MINI-E Air Preparation Units G1/4" Aluminum alloy bowl guard Regulator Filter
Filter regulators LFR/LFRS, D series, metal design
1.Space-saving design with filter and regulator in a single unit.
2.Good particle separation and high flow rate.
3.Good regulating characteristics with minimal hysteresis.
4.Two pressure regulation ranges:0.5 … 7 bar and 0.5 … 12 bar.
5.Two pressure gauge connections for flexible installation.
6.Setting values are secured by locking the rotary knob.
7.With manual, semi-automatic or fully automatic condensate drain.
8.Choice of filter cartridges: 5 μm or 40 μm.
General technical data
| Size | Mini | Midi | Maxi |
| Pneumatic connection | G1/8,G1/4,G3/8 | G1/4,G3/8,G1/2,G3/4 | G1/2,G3/4,G1 |
| Design | Filter regulator with/without pressure gauge | ||
| Type of mounting | Via accessories | ||
| In-line installation | |||
| Assembly position | Vertical ±5° | ||
| Grade of filtration[μm] | 5 | ||
| 40 | |||
| Air purity class at the output | Compressed air according to ISO 8573-1:2010 [6:8:4] (grade of filtration 5 μm) | ||
| Compressed air according to ISO 8573-1:2010 [7:8:4] (grade of filtration 40 μm) | |||
| Inert gases | |||
| Bowl guard | Metal bowl guard | ||
| Condensate drain | Manual rotary | ||
| Fully automatic | |||
| Regulator lock | Rotary knob with detent | ||
| Rotary knob with integrated lock | |||
| Pressure regulation range [bar] | 0.5 … 7 | ||
| 0.5 … 12 | |||
| Max. hysteresis [bar] | 0.2 | 0.4 | |
| Pressure indication | Via pressure gauge | ||
| G1/8 prepared | G1/4 prepared | G1/4 prepared | |
| Max. condensate volume [cm3] | 22 | 43 | 80 |
Weight
| Size | Micro | Mini | Midi | Maxi | ||
| Connecting thread | Connecting plate | Connection G1/2 G3/4 | Connection G1 | |||
| With pressure gauge | ||||||
| LFR-… | 104 | 124 | 460 | 920 | 1,370 | 1,470 |
| LFR-…-DI | - | - | - | - | 1670 | 1670 |
| LFRS-.. | - | - | 560 | 1160 | 1470 | 1570 |
| LFRS-...-DI | - | - | - | - | 1950 | 1950 |
| Without pressure gauge | ||||||
| LFR-… | 94 | 114- | 410 | 830 | 1300 | 1400 |
| LFR-…-DI | - | - | - | - | 1600 | 1600 |
| LFRS-.. | - | - | 510 | 1070 | 1400 | 1500 |
| LFRS-...-DI | - | - | - | - | 1880 | 1880 |
Size
| Type | B1 | B2 | B3 | B4 | B6 | D1 | D2 | D3 | D4 | D5 | D6 | D9 |
| Mini | ||||||||||||
| LFR/LFRS-1/8-D-MINI (A) | 64 | 20 | 76 | ~52 | 40 | G1/8 | 31 | M36*1.5 | M4 | 41 | 5.6 | 38 |
| LFR/LFRS-1/4-D-MINI (A) | G1/4 | |||||||||||
| LFR/LFRS-3/8-D-MINI (A) | 70 | G3/8 | ||||||||||
| Size | Micro | Mini/Midi/Maxi | ||
| With pressure gauge | Without pressure gauge | |||
| 1.Housing | Wrought aluminium alloy | Die-cast zinc | ||
| 2.Connecting plates | Wrought aluminium alloy | Die-cast zinc/aluminium | ||
| 3.Regulating knob | POM | PA | ||
| 4.Knurled nut | - | Aluminium | ||
| 5.Bowl | PC | PC | ||
| 6.Metal bowl guard | - | Aluminium | ||
| -Seals | NBR | NBR | ||
| Note on materials | RoHS-compliant | |||
| - | - | Free of copper and PTFE (LFR only) | ||
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Serves time
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From Monday to Sunday