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Use the manufacturer part number and model code—not appearance alone. Connection, size, material, voltage, pressure, seal, and control options can differ within the same product family.
Global industrial sourcing · Houston, Texas info@mropartsrfq.com
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Festo
531831
Pressure regulator MS6N-LRB-1/2-D6-A4-AS
The Festo part number 531831 is an industrial component of the MS series in size 6, featuring a directly controlled diaphragm regulator with a continuous compressed air supply and any mounting position. This unit provides a normal nominal flow rate of 6300 l/min, a pressure regulation range of 0.3 bar to 7 bar across an operating pressure of 0.8 bar to 20 bar, and includes a rotary knob actuator lock with detent that can be closed with accessories. It operates with compressed air as per ISO 8573-1:2010 [7:4:4] or inert gases within a temperature range of -10 °C to 60 °C, weighing 747 g with a moderate corrosion stress rating (CRC 2). Submit the exact part number, quantity, and application requirements for a quote.
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Request a QuoteWhy no listed price?
Industrial and obsolete parts are priced per enquiry: the final price depends on available stock, condition, quantity, and your delivery destination, so a fixed list price would be misleading. Request a quote and we confirm current pricing, lead time, and sourcing options — including hard-to-find and discontinued Festo references — within one business day.
- Manufacturer
- Festo
- Part number
- 531831
- Data verification
- Manufacturer evidence reviewed
For a faster response, include quantity, condition, and delivery destination.
Exact part-number verificationTechnical properties are matched to 531831.
Worldwide sourcingSupport for planned and urgent industrial requirements.
Manufacturer documentationA document is added when the reviewed source provides one.
Verified configuration
Technical Specifications
- Size
- 6
- Series
- MS
- Actuator lock
- Rotary knob with detent | can be closed with accessories
- Mounting position
- Any
- Structural design
- Directly controlled diaphragm regulator | with continuous compressed air supply
- Controller function
- Constant output pressure | With primary pressure compensation | With secondary exhausting
- Pressure gauge
- Set up for G1/4
- Operating pressure
- 0.8 bar...20 bar
- Pressure regulation range
- 0.3 bar...7 bar
- Max. pressure hysteresis
- 0.25 bar
- Normal nominal ow rate (normalized to DIN 1343)
- 6300 l/min
- Operating medium
- Compressed air as per ISO 8573-1:2010 [7:4:4] | Inert gases
- Information on operating and pilot media
- Operation with oil lubrication possible (required for further use)
- Corrosion resistance class (CRC)
- 2 - Moderate corrosion stress
- LABS (PWIS) conformity
- VDMA24364-B1/B2-L
- Storage temperature
- -10 °C...60 °C
- For use in the food industry
- See supplementary material information
- Temperature of medium
- -10 °C...60 °C
- Ambient temperature
- -10 °C...60 °C
- Product weight
- 747 g
- Type of mounting
- Alternatively: | Front panel mounting | In-line installation | With accessories
- Pneumatic connection 1
- 1/2 NPT
- Pneumatic connection 2
- 1/2 NPT
- Note on materials
- RoHS compliant
- Material of operator panel
- PA
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 531831. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.