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Festo
529531
Soft-start valve MS4-DL-1/4
The Festo 529531 is a directly controlled 2/2 piston seat pneumatic industrial component featuring an adjustable exhaust air function, a mechanical spring reset method, and a non-reversible flow direction with an external pilot air supply port. Operating at 4 bar to 14 bar with compressed air conforming to ISO 8573-1:2010 [7:4:4] or inert gases within a -10 °C to 60 °C medium temperature range, this unit delivers a normal nominal flow rate of 2000 l/min, a C value of 9.6 l/sbar, and a b-value of 0.45. It includes no manual override, offers any mounting position, features a moderate corrosion resistance class (CRC 2) with VDMA24364-B1/B2-L LABS conformity, and permits oil lubrication operation which is required for further use. Submit the exact part number, quantity, and application requirements to request a formal quote for this component.
Request pricing and availabilityCommercial response within one business day for your destination and required quantity.
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
- 529531
- Data verification
- Manufacturer evidence reviewed
For a faster response, include quantity, condition, and delivery destination.
Exact part-number verificationTechnical properties are matched to 529531.
Worldwide sourcingSupport for planned and urgent industrial requirements.
Manufacturer documentationA document is added when the reviewed source provides one.
Verified configuration
Technical Specifications
- Exhaust air function
- Adjustable
- Actuation type
- Pneumatic
- Mounting position
- Any
- Manual override
- None
- Structural design
- Piston seat
- Reset method
- Mechanical spring
- Type of control
- directly
- Pilot air supply port
- External
- Flow direction
- Non-reversible
- Valve function
- 2/2
- Operating pressure
- 4 bar...14 bar
- b-value
- 0.45
- C value
- 9.6 l/sbar
- Normal nominal ow rate (normalized to DIN 1343)
- 2000 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
- 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
- 213 g
- Type of mounting
- Alternatively: | In-line installation | With accessories
- Pneumatic connection 1
- G1/4
- Pneumatic connection 2
- G1/4
- Note on materials
- RoHS compliant
- Seals material
- NBR
- Housing material
- 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 529531. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.