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Festo
539689
Filter regulator LFR-1/4-DB-7-5M-MINI
The Festo 539689 is a mini DB-series filter regulator featuring a 44 mm width, a structural design that includes a pressure gauge, and a 5 µm grade of filtration with a manually rotating condensate drain. It provides a standard nominal flow rate of 1000 l/min across an operating pressure range of 1.5 bar to 10 bar, backed by secondary exhausting, a return flow function, and a rotary knob with detent for actuator locking. Operating within a medium and ambient temperature range of -5 °C to 50 °C, this unit handles compressed air and inert gases while maintaining a pressure regulation range of 0.5 bar to 7 bar. Submit the exact part number, quantity, and application requirements to receive a formal quotation.
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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
- 539689
- Data verification
- Manufacturer evidence reviewed
For a faster response, include quantity, condition, and delivery destination.
Exact part-number verificationTechnical properties are matched to 539689.
Worldwide sourcingSupport for planned and urgent industrial requirements.
Manufacturer documentationA document is added when the reviewed source provides one.
Verified configuration
Technical Specifications
- Size
- Mini
- Width
- 44 mm
- Series
- DB
- Actuator lock
- Rotary knob with detent
- Mounting position
- Vertical +/- 5°
- Grade of ltration
- 5 µm
- Condensate drain
- Manually rotating
- Structural design
- Filter regulator with pressure gauge
- Controller function
- With secondary exhausting | With return ow function
- Pressure gauge
- with pressure gauge
- Operating pressure
- 0.15 MPa...1 MPa | 1.5 bar...10 bar
- Pressure regulation range
- 0.5 bar...7 bar
- Max. pressure hysteresis
- 0.5 bar
- Standard nominal ow rate
- 1000 l/min
- Operating medium
- Compressed air as per ISO 8573-1:2010 [-:9:-] | Inert gas
- Corrosion resistance class (CRC)
- 1 - Low corrosion stress
- LABS (PWIS) conformity
- VDMA24364-B1/B2-L
- Air quality class at the output
- Compressed air as per ISO 8573-1:2010 [6:8:4] | Inert gas
- Temperature of medium
- -5 °C...50 °C
- Ambient temperature
- -5 °C...50 °C
- Product weight
- 200 g
- Type of mounting
- Optionally: | Line installation | With through-hole | With mounting bracket
- Pressure gauge connection
- G1/8
- Pneumatic connection 1
- G1/4
- Pneumatic connection 2
- G¼
- Note on materials
- RoHS-compliant
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 539689. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.