Pressure regulating valves LR, LRS
Classic
The Festo LR and LRS pressure regulating valves from the Classic range maintain a constant outlet pressure in pneumatic systems regardless of fluctuations in the supply network. With 161 versions in port sizes G 1/8 to G 1, LR (standard) and LRS (special configurations) form the pure pressure regulation product line without integrated filtration, for use where the filter stage is provided separately.
| Suffix pattern | Meaning | Typical use |
|---|---|---|
| LR-...-D-MIDI/MAXI | Standard, 5-bar regulation | General pneumatics, decentralised regulation |
| LR-...-D-7-... | 7-bar regulation | High-pressure systems, clamping technology |
| LR-...-D-DI-... | Digital pressure display | Precise process pressure monitoring |
| LR-...-D-O-... | Outlet top | Space-saving installation position |
| LR-...-D-I-... | Internal pilot | Special MIDI configurations |
| LRS-... | S variant (special characteristics) | Special applications |
Typical applications: Decentralised pressure regulation of individual machine modules where filtration is already handled centrally, pressure reduction for sensitive actuators downstream of a main filter-regulator, use in cleanroom and special installations where no filter housing may be installed, and high-pressure applications (7-bar variant) in presses, fixtures and pneumatic test benches.




