GR-1/2 – One-way Flow Control Valve – Festo Flow Control Valves

USD $ 82.11 USD $ 67.33

SKU: Festo 3720

Manufacturer Part Number: Festo 3720
Festo Flow Control Valves: GR-1/2
OEM Spec Ref 

The Festo GR-1/2, with MPN 3720, is a precision-engineered Flow Control Valve designed to regulate airflow efficiently within pneumatic systems. This high-quality valve is essential for controlling the rate of air flow and maintaining optimal conditions in a variety of industrial applications, thereby ensuring efficient operations and system reliability.

Key Features:

  • Accurate Flow Regulation: The GR-1/2 is meticulously designed to offer superior control over air flow, enabling precise adjustments to meet the demands of different pneumatic applications.
  • Durable Construction: Made from robust materials, the valve is built to withstand the rigors of industrial environments, ensuring durability and a long service life.
  • Streamlined Design: Its compact and efficient design allows for easy installation in systems where space is at a premium, without compromising on performance.
  • User-Friendly Interface: It features simple controls for hassle-free operation, allowing for quick and easy adjustments to flow rates.
  • Versatile Compatibility: The valve is compatible with a wide array of pneumatic systems, making it a versatile choice for integration into various setups.


  • Enhanced System Performance: By delivering precise flow control, it helps maintain the efficiency and reliability of pneumatic systems, enhancing overall performance.
  • Operational Cost Savings: Optimizing air flow contributes to reduced energy consumption, which can significantly lower operating costs.
  • Extended Equipment Lifespan: Proper flow control reduces strain on system components, extending their lifespan and decreasing the need for frequent maintenance.
  • Improved Safety: Stable and reliable flow control increases the safety of operations, meeting high industry safety standards.


  • Automated Assembly Lines: Ideal for use in automated assembly lines where precise air flow is critical to maintaining high-quality production.
  • Industrial Pneumatics: Suitable for a broad range of industrial pneumatic applications, from manufacturing to material handling.
  • Testing and Calibration: Plays a vital role in systems that require exact air flow for accurate testing and calibration processes.
  • General Industrial Applications: Adaptable to various industrial settings, enhancing operational precision and efficiency.

The Festo GR-1/2 Flow Control Valve represents Festo’s commitment to innovation and quality, offering a reliable and efficient solution for managing air flow in industrial pneumatic systems.

Technical Data

Feature Specification
Valve function Flow control non-return function
Pneumatic connection 1 G1/2
Pneumatic connection 2 G1/2
Adjusting element Knurled screw
Type of mounting With through-hole
Standard nominal flow rate in flow control direction 1620 l/min
Standard nominal flow rate in non-return direction 2760 l/min
Operating pressure 0.1 bar … 10 bar
Ambient temperature -20 °C … 75 °C
Housing material Die-cast zinc
Explosion prevention and protection Observe the information on the certificate
Zone 1 (ATEX)
Zone 2 (ATEX)
Zone 21 (ATEX)
Zone 22 (ATEX)
Mounting position Any
Symbol 00991453
Operating medium Compressed air as per ISO 8573-1:2010 [7:-:-]
Information on operating and pilot media Operation with oil lubrication possible (required for further use)
LABS (PWIS) conformity VDMA24364-B1/B2-L
Temperature of medium -20 °C … 75 °C
Product weight 517 g
Note on materials RoHS-compliant
Material of adjusting screw Brass
Weight 0.517 kg