Festo MS4-LFR
Filter regulator
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The MS4-LFR from Festo is a high-performance filter regulator designed to ensure clean and stable air supply in pneumatic systems. It combines filtration and pressure regulation in one compact unit, providing a filtration grade of 5 microns and a pressure regulation range of 0.5 to 12 bar. The MS4-LFR features an integrated pressure gauge for easy monitoring and a manual drain for convenient maintenance. Constructed with durable materials, it is built to withstand harsh industrial environments. This filter regulator enhances the efficiency and reliability of pneumatic systems by providing consistent and clean air supply.
Festo Filter regulator.
MS4-LFR Datasheet:
| Size | 4 |
| Series | MS |
| Actuator lock | Rotary knob with detentRotary knob with integrated lockcan be closed with accessories |
| Mounting position | Vertical +/-5° |
| Grade of filtration | 5 µm ... 40 µm |
| Condensate drain | Fully automaticManual, non-detentingManually rotatingSemi-automatic |
| Design | Filter regulator with pressure gaugeFilter regulator without pressure gauge |
| Controller function | Output pressure constantWith secondary ventingWith return flow function |
| Bowl guard | Plastic bowl guardIntegrated as metal bowl |
| Degree of condensate separation | >75 % |
| Pressure gauge (ANALOG) or Pressure display (DIGITAL) | Prepared for G1/4Prepared for G1/8Via pressure sensorWith pressure gauge |
| Operating pressure | 0.08 MPa ... 1.4 MPa |
| Operating pressure | 0.8 bar ... 14 bar |
| Pressure regulation range | 0.3 bar ... 12 bar |
| Max. pressure hysteresis | 0.25 bar |
| Standard nominal flow rate (standardised to DIN 1343) | 850 l/min ... 1800 l/min |
| Approval | c UL us - Recognized (OL) |
| CE mark (see declaration of conformity) | To EU Explosion Protection Directive (ATEX) |
| CE marking (see declaration of conformity) | To UK EX instructions |
| Explosion protection certification outside the EU | EPL Db (GB)EPL Gb (GB) |
| Explosion protection | Zone 1 (ATEX)Zone 1 (UKEX)Zone 2 (ATEX)Zone 21 (ATEX)Zone 21 (UKEX)Zone 22 (ATEX) |
| ATEX category gas | II 2G |
| ATEX category dust | II 2D |
| Explosion ignition protection type for gas | Ex h IIC T6 Gb X |
| Explosion ignition protection type for dust | Ex h IIIC T60°C Db X |
| Explosion ambient temperature | -10°C <= Ta <= +60°C |
| Operating medium | Compressed air to ISO 8573-1:2010 [-:4:-]Compressed air to ISO 8573-1:2010 [7:4:-]Inert gases |
| Corrosion resistance class CRC | 2 - Moderate corrosion stress |
| LABS (PWIS) conformity | VDMA24364-B1/B2-L |
| Storage temperature | -10 °C ... 60 °C |
| Suitable for use with food | See supplementary material information |
| Media temperature | -10 °C ... 60 °C |
| Ambient temperature | -10 °C ... 60 °C |
| Type of mounting | Either:Front panel mountingIn-line installationWith accessories |
| Note on materials | RoHS-compliant |
| Material sub-base | Die-cast aluminium |
| Material seals | NBR |
| Material filter | PE |
| Material housing | Die-cast aluminium |
| Material membrane | NBR |
| Material separating plate | POM |
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