Overview
The Festo GRL-1/8 flow control valve is a one-way flow control valve engineered for pneumatic system applications. This compact valve combines a throttle check valve with a piloted non-return valve, enabling precise flow rate adjustment in a single, integrated unit. Built with proven Festo engineering, the GRL-1/8 is widely used in automation, manufacturing, and process control systems where metered air flow is critical.
Key Features
- One-way flow control with integrated check valve function
- Lightweight, compact design combining polymer and metal construction
- Manual slotted-head screw adjustment for precise flow tuning
- Available in ISO or NPT thread variants for flexible installation
- Piloted non-return valve ensures controlled flow in one direction
- Proven design for hydraulic, pneumatic, and industrial automation applications
Technical Specifications
- Operating Pressure Range: 0.5 to 10 bar (7.25 to 145 PSI)
- Port Connection: G1/8 or NPT 1/8 inch (thread variants available)
- Adjustment: Slotted-head screw
- Valve Function: Exhaust air or supply air one-way flow control
- Media: Compressed air
- Design: Metal and polymer construction
- Flow Direction: One-way with check function
Typical Applications
- Pneumatic actuator speed control
- Industrial automation and production machinery
- Air cylinder exhaust flow regulation
- Process automation requiring precise flow management
- Machine tool automation and assembly line control
- Hydraulic and pneumatic circuit optimization
Compatibility & Replacements
Compatible With
- Festo pneumatic systems and components
- Standard ISO G1/8 pneumatic circuits
- NPT 1/8 inch threaded pneumatic networks
- Industrial automation platforms using compressed air
- Allen-Bradley, Siemens, and other PLC-based control systems
- Pneumatic actuators and air cylinders
Replaces / Drop-In Replacement For
Verify compatibility with your system integrator before ordering. The Festo GRL-1/8 is the standard model in the GRL series; related variants include GRLA and GRLZ models with different flow and connection options.
Works With
- Pneumatic system design and optimization software
- Industrial automation control platforms
- Festo Automation Designer and engineering tools
- ISO and NPT pneumatic standards
- Manual and solenoid-controlled pneumatic circuits
