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Festo
531231
Filter regulator MS4N-LFR-1/4-D6-CRM-AS-Z
The Festo part number 531231 is an industrial MS-series size 4 filter regulator featuring a manual rotary condensate drain, a 5 µm grade of filtration, and a protective plastic bowl guard. Designed with a pressure gauge and an output pressure constant controller function with secondary exhaust and return flow, it operates within an inlet pressure range of 0.8 to 14 bar and a pressure control range of 0.3 to 7 bar. This unit delivers a standard nominal flow rate of 1,500 l/min for compressed air media while maintaining an air purity class at output of 3.7.- per DIN ISO 8573-1 in vertical assembly positions within a +/- 5° tolerance. Submit the exact part number, quantity, and application requirements to receive a formal quotation.
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Request a Quote- Manufacturer
- Festo
- Part number
- 531231
- Data verification
- Manufacturer evidence reviewed
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Exact part-number verificationTechnical properties are matched to 531231.
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Verified configuration
Technical Specifications
- Size
- 4
- Series
- MS
- Actuator lock
- with accessories, lockable
- Assembly position
- Vertical +/- 5°
- Grade of filtration
- 5 µm
- Condensate drain
- manual rotary
- Design structure
- Filter regulator with pressure gauge
- Max. condensate volume
- 19 ml
- Controller function
- Output pressure constant | with secondary exhaust | with return flow
- Bowl guard
- Plastic guard
- Pressure gauge
- with pressure gauge
- Pressure control range
- 0.3 ... 7 bar
- Inlet pressure 1
- 0.8 ... 14 bar
- Max. pressure hysteresis
- 0.25 bar
- Standard nominal flow rate
- 1,500 l/min
- Operating medium
- Compressed air
- Corrosion resistance classification CRC
- 2
- Storage temperature
- -10 ... 60 °C
- Air purity class at output
- 3.7.- per DIN ISO 8573-1
- Medium temperature
- -10 ... 60 °C
- Ambient temperature
- -10 ... 60 °C
- Product weight
- 275 g
- Mounting type
- with accessories | Optional | Front panel installation | Line installation
- Pneumatic connection, port
- 2 NPT1/4-18
- Materials information for seals
- NBR
- Materials information, housing
- Aluminum die cast
- Materials information for bowl
- PC
- Material information, isolating disc
- POM
Engineering context
Identification and RFQ Guidance
What to include in your RFQ
Provide quantity, delivery country and ZIP/postal code, required condition, target date, and photographs of the existing nameplate when available.
Technical verification
Our sourcing response is prepared against Festo 531231. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.