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Festo
531788
Pressure regulator MS4N-LRB-1/4-D6-AS-BI
The Festo 531788 is a size 4 industrial component from the MS series featuring a directly controlled diaphragm regulator with a continuous compressed air supply and a rotary knob actuator lock with detent that can be closed with accessories. Operating within a pressure range of 0.3 bar to 7 bar at an operating pressure of 0.8 bar to 14 bar, this unit delivers a normal nominal flow rate of 840 l/min for compressed air or inert gases and includes an integrated pressure gauge. The device weighs 222 g, provides a maximum pressure hysteresis of 0.25 bar, and features secondary exhausting, a return flow characteristic, and constant output pressure across an ambient and medium temperature range of -10 °C to 60 °C. Submit the exact part number, quantity, and application requirements to receive a formal quotation for this component.
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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
- 531788
- Data verification
- Manufacturer evidence reviewed
For a faster response, include quantity, condition, and delivery destination.
Exact part-number verificationTechnical properties are matched to 531788.
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 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 secondary exhausting | With return ow characteristic
- Pressure gauge
- with pressure gauge
- Operating pressure
- 0.8 bar...14 bar
- Pressure regulation range
- 0.3 bar...7 bar
- Max. pressure hysteresis
- 0.25 bar
- Normal nominal ow rate (normalized to DIN 1343)
- 840 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
- 222 g
- Type of mounting
- Alternatively: | Front panel mounting | In-line installation | With accessories
- Pneumatic connection 1
- 1/4 NPT
- Pneumatic connection 2
- QS-8
- Note on materials
- RoHS compliant
- Material of sub-base
- Die-cast aluminum
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 531788. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.