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Festo
529171
Filter regulator MS4-LFR-1/8-D7-CRV-AS-Z
The Festo 529171 is an MS-series size 4 filter regulator featuring a rotary knob with lock, integrated pressure gauge, and fully automatic condensate drain with a 19 ml max condensate volume. Operating within a working pressure of 2 to 12 bar and a pressure control range of 0.5 to 12 bar, this unit delivers a standard nominal flow rate of 850 l/min while maintaining a constant output pressure with secondary exhaust and return flow. It is designed for a vertical assembly position within +/- 5° using compressed air or inert gases, featuring a 5 µm filtration grade, plastic bowl guard, and CRC 2 corrosion resistance. Submit the exact part number, quantity, and application requirements to request a quote 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
- 529171
- Data verification
- Manufacturer evidence reviewed
For a faster response, include quantity, condition, and delivery destination.
Exact part-number verificationTechnical properties are matched to 529171.
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Manufacturer documentationA document is added when the reviewed source provides one.
Verified configuration
Technical Specifications
- Size
- 4
- Series
- MS
- Actuator lock
- Rotary knob with lock | with accessories, lockable
- Assembly position
- Vertical +/- 5°
- Grade of filtration
- 5 µm
- Condensate drain
- fully automatic
- 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
- Working pressure
- 2 ... 12 bar
- Pressure control range
- 0.5 ... 12 bar
- Max. pressure hysteresis
- 0.25 bar
- Standard nominal flow rate
- 850 l/min
- Operating medium
- Compressed air in accordance with ISO8573-1:2010 [7:4:-] | Inert gases
- Corrosion resistance classification CRC
- 2
- Storage temperature
- -10 ... 60 °C
- Air purity class at output
- Compressed air in accordance with ISO8573-1:2010 [6:4:4]
- Medium temperature
- 5 ... 60 °C
- Ambient temperature
- 5 ... 60 °C
- Product weight
- 275 g
- Mounting type
- Optional | Front panel installation | Line installation | with accessories
- Pneumatic connection, port
- 2 G1/8
- Materials note
- Conforms to RoHS
- 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 529171. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.