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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.
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Festo
185831
Service unit FRC-1/4-D-MIDI-KE
The Festo 185831 is a Midi-size industrial component from the D series, featuring an on-off valve, a filter regulator with a pressure gauge, a proportional standard oil mist lubricator, and a safety start-up valve with a rotary knob with detent actuator lock. Designed for a vertical ±5° mounting position, this unit operates within a pressure range of 0.3 MPa to 1.6 MPa (3 bar to 16 bar / 43.5 psi to 232 psi) and delivers a normal nominal flow rate of 1100 l/min using compressed air conforming to ISO 8573-1:2010 [-:-:-] or inert gases. It incorporates a 40 µm filtration grade, a manual rotating condensate drain with a maximum 43 cm³ condensate volume, a metal bowl guard, and achieves an output air quality class of ISO 8573-1:2010 [7:4:-]. Submit the exact part number, quantity, and application requirements for a quote.
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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
- 185831
- Data verification
- Manufacturer evidence reviewed
For a faster response, include quantity, condition, and delivery destination.
Exact part-number verificationTechnical properties are matched to 185831.
Worldwide sourcingSupport for planned and urgent industrial requirements.
Manufacturer documentationA document is added when the reviewed source provides one.
Verified configuration
Technical Specifications
- Size
- Midi
- Series
- D
- Actuator lock
- Rotary knob with detent
- Mounting position
- Vertical ±5°
- Grade of ltration
- 40 µm
- Condensate drain
- Manual, rotating
- Structural design
- On/off valve | Filter regulator with pressure gauge | Proportional standard oil mist lubricator | Safety start-up valve
- Max. condensate volume
- 43 cm³
- Bowl guard
- Metal bowl guard
- Pressure gauge
- with pressure gauge
- Operating pressure
- 0.3 MPa...1.6 MPa | 3 bar...16 bar | 43.5 psi...232 psi
- Pressure regulation range MPa
- 0.25 MPa...1.2 MPa
- Pressure regulation range
- 2.5 bar...12 bar
- Pressure regulation range psi
- 36.25 psi...174 psi
- Max. pressure hysteresis
- 0.025 MPa | 0.25 bar | 3.625 psi
- Normal nominal ow rate (normalized to DIN 1343)
- 1100 l/min
- Operating medium
- Compressed air as per ISO 8573-1:2010 [-:-:-] | Inert gases
- Corrosion resistance class (CRC)
- 2 - Moderate corrosion stress
- LABS (PWIS) conformity
- VDMA24364-B1/B2-L
- Air quality class at the output
- Compressed air as per ISO 8573-1:2010 [7:4:-] | Inert gases
- Temperature of medium
- -10 °C...60 °C
- Ambient temperature
- -10 °C...60 °C
- Product weight
- 2800 g
- Type of mounting
- Alternatively: | In-line installation
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 185831. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.