LR-1/4-DB-7-O-MINI – Pressure Regulator – Festo Compressed Air Regulator

USD $ 37.17

SKU: Festo 537643

Manufacturer Part Number: Festo 537643
Festo Compressed Air Regulator: LR-1/4-DB-7-O-MINI
OEM Spec Ref 

The Festo LR-1/4-DB-7-O-MINI Compressed Air Regulator, with MPN 537643, is an essential tool engineered for superior performance in regulating compressed air in pneumatic systems. This premium regulator is specifically crafted to enhance the operational efficiency and reliability of your industrial applications by delivering precise pressure adjustments.

Key Features:

  • Precision Pressure Management: The LR-1/4-DB-7-O-MINI is designed to provide precise control over compressed air pressure, ensuring optimal performance and consistency across various operational conditions.
  • Durable Construction: Made from robust materials, this regulator is built to endure the demanding environments of industrial settings, offering exceptional longevity and reliability.
  • Compact and Efficient Design: Its compact form factor makes it an ideal choice for installations where space is at a premium, without compromising on its efficiency and effectiveness.
  • User-Friendly Operation: Equipped with an intuitive adjustment knob, this regulator allows for easy and accurate pressure settings, simplifying the calibration process for peak system performance.
  • Broad Compatibility: This model is compatible with a wide array of pneumatic systems, making it a versatile addition to any industrial setup, enhancing system integration and flexibility.


  • Optimal System Performance: By maintaining precise control over air pressure, the LR-1/4-DB-7-O-MINI helps to improve the efficiency and dependability of pneumatic operations.
  • Cost Efficiency: Effective pressure regulation aids in reducing energy costs by optimizing the consumption of compressed air, thereby offering potential savings in operational expenses.
  • Extended Component Life: Regular and accurate pressure adjustments minimize wear on system components, extending their service life and decreasing the frequency of maintenance.
  • Enhanced Safety: Stable and reliable pressure control contributes to safer operational practices, complying with rigorous industry safety standards.


  • Industrial Manufacturing: Vital for consistent pressure regulation in automated production lines to maintain high-quality outputs.
  • Pneumatic Control Systems: Integral to systems requiring stable and precise pressure for accurate functionality and response.
  • Quality Testing and Inspection: Perfect for applications where consistent pressure is crucial for reliable testing and inspection processes.
  • Versatile Industrial Use: Suitable for a wide range of industrial pneumatic applications, ensuring enhanced precision and operational stability.

The Festo LR-1/4-DB-7-O-MINI Compressed Air Regulator exemplifies Festo’s commitment to innovation and quality in pneumatic technology, offering a robust solution for precise pressure management in demanding industrial environments.

Technical Data

Feature Specification
Size Mini
Width 44 mm
Series DB
Actuator lock Rotary knob with detent
Mounting position Any
Structural design Pressure regulator without pressure gauge
Controller function With secondary exhausting
With return flow function
Symbol 00991559
Pressure gauge G1/8 prepared
Operating pressure 0.1 MPa … 1 MPa
Operating pressure 1.5 bar … 10 bar
Pressure regulation range 0.5 bar … 12 bar
Inlet pressure 1 1 bar … 10 bar
Max. pressure hysteresis 0.5 bar
Standard nominal flow rate ≥1300 l/min
Operating medium Compressed air as per ISO 8573-1:2010 [7:4:4]
Information on operating and pilot media Operation with oil lubrication possible (required for further use)
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 [7:4:4]
Temperature of medium -5 °C … 50 °C
Ambient temperature -5 °C … 50 °C
Product weight 150 g
Type of mounting Optionally:
Front panel mounting
Line installation
With through-hole
With mounting bracket
Pressure gauge connection G1/8
Pneumatic connection 1 G1/4
Pneumatic connection 2
Note on materials RoHS-compliant
Seals material NBR
Rotary knob material POM
Housing material PA-reinforced
Weight 0.150 kg