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Festo
549919
Precision pressure regulator LRP-1/4-2,5-EX4
The Festo part number 549919 is a size 50 pilot-controlled precision diaphragm regulator featuring a constant output pressure controller function with secondary exhausting and a rotary knob with detent actuator lock. It delivers a normal nominal flow rate of 1800 l/min across an operating pressure and inlet pressure range of 1 bar to 12 bar, with a pressure regulation range of 0.05 bar to 2.5 bar and a maximum pressure hysteresis of 0.02 bar. Rated for ATEX Zone 1, 2, 21, and 22 explosion protection, this component operates within a medium and ambient temperature range of -10 °C to 60 °C using compressed air as per ISO 8573-1:2010 [7:4:4] or inert gases. Submit the exact part number, quantity, and application requirements to request a quote for this item.
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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
- 549919
- Data verification
- Manufacturer evidence reviewed
For a faster response, include quantity, condition, and delivery destination.
Exact part-number verificationTechnical properties are matched to 549919.
Worldwide sourcingSupport for planned and urgent industrial requirements.
Manufacturer documentationA document is added when the reviewed source provides one.
Verified configuration
Technical Specifications
- Size
- 50
- Actuator lock
- Rotary knob with detent
- Mounting position
- Any
- Structural design
- Pilot-controlled precision diaphragm regulator
- Controller function
- Constant output pressure | With secondary exhausting
- Pressure gauge
- Set up for G1/8
- Operating pressure
- 0.1 MPa...1.2 MPa | 1 bar...12 bar
- Pressure regulation range
- 0.05 bar...2.5 bar
- Inlet pressure 1
- 1 bar...12 bar
- Max. pressure hysteresis
- 0.02 bar
- Normal nominal ow rate (normalized to DIN 1343)
- 1800 l/min
- Explosion prevention and protection
- Zone 1 (ATEX) | Zone 2 (ATEX) | Zone 21 (ATEX) | Zone 22 (ATEX)
- 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 not possible
- Corrosion resistance class (CRC)
- 2 - Moderate corrosion stress
- LABS (PWIS) conformity
- VDMA24364-B1/B2-L
- Temperature of medium
- -10 °C...60 °C
- Ambient temperature
- -10 °C...60 °C
- Product weight
- 315 g
- Type of mounting
- Alternatively: | Front panel mounting | In-line installation | With accessories
- Pneumatic connection 1
- G1/4
- Pneumatic connection 2
- G1/4
- Note on materials
- RoHS compliant
- Seals material
- NBR
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 549919. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.