5271794

Name: Festo 5271794 Filter regulator LFR-1/4-D-16-5M-O-MIDI-T3-EX4
Brand: Festo

Filter regulator LFR-1/4-D-16-5M-O-MIDI-T3-EX4

The Festo 5271794 is a Midi size Series D filter regulator without a pressure gauge, featuring a rotary knob with detent actuator lock and an integrated metal bowl bowl guard with a maximum condensate volume of 42 cm3. Operating within a pressure range of 1 bar to 20 bar and a regulation range of 0.5 bar to 16 bar, this component achieves a normal nominal flow rate of 1150 l/min and a maximum pressure hysteresis of 2.9 psi while supporting a manual, rotating condensate drain in a vertical ±5° mounting position with a 5 µm filtration grade. Certified for Zone 1, Zone 2, Zone 21, and Zone 22 hazardous areas, it carries ATEX category II 2G for gas and II 2D for dust alongside UKCA and EPL Db/Gb explosion protection certifications. Submit the exact part number, quantity, and application requirements for a quote.

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Manufacturer: Festo
Part number: 5271794
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Technical Specifications

Size: Midi
Series: D
Actuator lock: Rotary knob with detent
Mounting position: Vertical ±5°
Grade of ltration: 5 µm
Condensate drain: Manual, rotating
Structural design: Filter regulator without pressure gauge
Max. condensate volume: 42 cm³
Bowl guard: Integrated as metal bowl
Pressure gauge: Set up for G1/4
Operating pressure: 0.1 MPa...2 MPa | 1 bar...20 bar
Pressure regulation range: 0.5 bar...16 bar
Max. pressure hysteresis: 0.02 MPa | 2.9 psi
Normal nominal ow rate (normalized to DIN 1343): 1150 l/min
CE marking (see declaration of conformity): as per EU explosion protection directive (ATEX)
UKCA marking (see declaration of conformity): acc. to UK EX instructions
Explosion protection certication outside the EU: EPL Db (GB) | EPL Gb (GB)
Explosion prevention and protection: Zone 1 (ATEX) | Zone 1 (UKEX) | Zone 2 (ATEX) | Zone 21 (ATEX) | Zone 21 (UKEX) | Zone 22 (ATEX)
ATEX category gas: II 2G
ATEX category for dust: II 2D
Type of ignition protection for gas: Ex h IIC T6 Gb X
Type of (ignition) protection for dust: Ex h IIIC T85°C Db X
Explosive ambient temperature: -40°C <= Ta <= +80°C
Operating medium: Compressed air as per ISO 8573-1:2010 [-:9:-] | Inert gases
Information on operating and pilot media: Operation with oil lubrication possible (required for further use)

Engineering context

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Our sourcing response is prepared against Festo 5271794. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.