GR-QS-8 – One-way Flow Control Valve – Festo Flow Control Valves

USD $ 19.74 USD $ 16.19

SKU: Festo 193970

Manufacturer Part Number: Festo 193970
Festo Flow Control Valves: GR-QS-8
OEM Spec Ref 

The Festo GR-QS-8, with MPN 193970, is an exceptionally designed Flow Control Valve that excels in regulating airflow within pneumatic systems, ensuring optimal operational conditions across various industrial environments. This precision-engineered valve integrates smoothly into different applications, providing precise control and reliability.

Key Features:

  • Precision Flow Regulation: Expertly designed to offer meticulous control over air flow, enhancing system efficiency and performance stability.
  • Robust Construction: Crafted from durable materials, the GR-QS-8 withstands the demanding conditions of industrial settings, ensuring longevity and resilience.
  • Compact and Functional Design: Its sleek profile facilitates easy installation in areas where space is at a premium, without compromising on functionality.
  • User-Friendly Operation: Features an intuitive adjustment mechanism that allows for quick and precise flow settings, simplifying system adjustments.
  • Broad Compatibility: Effortlessly integrates with a wide array of pneumatic systems, making it a versatile addition to any setup.


  • Enhanced Operational Efficiency: By regulating air flow precisely, it helps maintain optimal conditions, significantly boosting system performance and reliability.
  • Reduced Energy Costs: Optimizes airflow, which can decrease energy consumption and lead to notable savings on operational costs.
  • Extended Component Durability: Helps in reducing the wear and tear on system components, thereby extending their lifespan and decreasing the frequency of maintenance.
  • Increased Safety: Ensures stable and reliable flow control, which is crucial for meeting rigorous safety standards and preventing system failures.


  • Industrial Automation: Indispensable for achieving precise flow control in automated production lines to ensure high-quality outputs.
  • Pneumatic Control Systems: Crucial for systems requiring consistent and accurate flow for optimal functionality.
  • Testing and Calibration: Ideal for setups that necessitate precise flow control for accurate testing and calibration processes.
  • General Pneumatics: Adaptable to a wide range of pneumatic applications across various sectors, improving precision and control.

The Festo GR-QS-8 Flow Control Valve is a testament to Festo’s commitment to pioneering advanced pneumatic solutions, providing an effective and reliable method for managing airflow and enhancing the efficiency of industrial operations.

Technical Data

Feature Specification
Valve function Flow control non-return function
Pneumatic connection 1 QS-8
Pneumatic connection 2 QS-8
Adjusting element Knurled screw
Type of mounting Optionally:
Front panel mounting
With through-hole
With accessories
Standard nominal flow rate in flow control direction 265 l/min
Standard nominal flow rate in non-return direction 500 l/min
Operating pressure 0.2 bar … 10 bar
Ambient temperature -10 °C … 60 °C
Housing material PA-reinforced
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 [7:4:4]
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 -10 °C … 60 °C
Product weight 23 g
Note on materials RoHS-compliant
Seals material NBR
Releasing ring material POM
Knurled head material PA-reinforced
Material of adjusting screw High-alloy steel
Weight 0.023 kg