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Festo
531421
Pressure regulator MS4N-LR-1/8-D5-AS-Z
The Festo 531421 is a directly-controlled diaphragm regulator of the MS series, size 4, featuring a rotary knob with an integrated lock and a pressure gauge. This component provides a constant output pressure with secondary exhaust, return flow, a standard nominal flow rate of 1,200 l/min, and a pressure control range of 0.3 to 4 bar for compressed air operating media. Constructed with an aluminum die cast subbase and a product weight of 225 g, it accommodates any assembly position and supports line installation, front panel installation, or mounting with accessories. Please submit the exact part number, quantity, and application requirements to receive a formal quotation.
Request pricing and availabilityCommercial response for your destination and required quantity.
Request a Quote- Manufacturer
- Festo
- Part number
- 531421
- Data verification
- Manufacturer evidence reviewed
For a faster response, include quantity, condition, and delivery destination.
Exact part-number verificationTechnical properties are matched to 531421.
Worldwide sourcingSupport for planned and urgent industrial requirements.
Manufacturer documentationA document is added when the reviewed source provides one.
Verified configuration
Technical Specifications
- Size
- 4
- Series
- MS
- Actuator lock
- Rotary knob with integrated lock
- Assembly position
- Any
- Design structure
- directly-controlled diaphragm regulator
- Controller function
- Output pressure constant | with secondary exhaust | with return flow
- Pressure gauge
- with pressure gauge
- Pressure control range
- 0.3 ... 4 bar
- Inlet pressure 1
- 0.8 ... 14 bar
- Max. pressure hysteresis
- 0.25 bar
- Standard nominal flow rate
- 1,200 l/min
- Operating medium
- Compressed air
- Corrosion resistance classification CRC
- 2
- Storage temperature
- -10 ... 60 °C
- Medium temperature
- -10 ... 60 °C
- Ambient temperature
- -10 ... 60 °C
- Product weight
- 225 g
- Mounting type
- with accessories | Optional | Front panel installation | Line installation
- Pneumatic connection, port
- 2 NPT1/8-27
- Materials information for subbase
- Aluminum die cast
- Materials information for control panel
- POM | PA
- Materials information for seals
- NBR
- Materials information, housing
- Aluminum die cast
- Materials information for membrane
- NBR
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 531421. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.