One-Way Flow Control
The GRLA-1/8-QS-4-D combines flow restriction in one direction with free flow in the opposite direction for pneumatic speed-control applications.
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Festo
FESTO GRLA-1/8-QS-4-D One-Way Flow Control Valve G1/8 4mm
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$11.40
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PRODUCT DOCUMENTATION
Product Information
Technical specifications, features, applications and purchasing information.
Technical Specifications
| Brand | FESTO |
| Model Number | GRLA-1/8-QS-4-D |
| Product Category | One-Way Flow Control Valve |
| Valve Function | Exhaust Air One-Way Flow Control |
| Pneumatic Connection 1 | G1/8 |
| Pneumatic Connection 2 | QS-4 Push-In Connector |
| Tube Outside Diameter | 4 mm |
| Adjustment Element | Slotted Head Screw |
| Mounting Type | Thread |
| Mounting Position | Any |
Key Features
Exhaust-Air Control
The GRLA design is intended for one-way exhaust-air flow control, allowing the movement speed of suitable pneumatic drives to be adjusted.
G1/8 Thread Connection
The valve uses a G1/8 pneumatic threaded connection for installation on suitable pneumatic components.
QS-4 Push-In Connection
The QS-4 connection is designed for pneumatic tubing with a 4 mm outside diameter.
Adjustable Flow Restriction
A slotted-head adjustment element provides mechanical adjustment of the restricted airflow for application-specific cylinder speed setting.
Compact Pneumatic Control
The combined threaded and push-in connection arrangement supports direct integration into pneumatic drive and tubing systems.
Applications
- Pneumatic cylinder speed control
- Exhaust-air flow adjustment
- Pneumatic drive control
- Automation equipment
- Handling systems
- Assembly machinery
- Packaging equipment
- Industrial pneumatic circuits
Purchase Information
We support online purchase of the FESTO GRLA-1/8-QS-4-D One-Way Flow Control Valve. If you need to make bulk purchases and inquire about other products, please contact our team to inform us of your purchase requirements. We will provide you with information such as quantity quotations, delivery dates, and transportation methods.
Frequently Asked Questions
What is FESTO GRLA-1/8-QS-4-D?
It is a one-way flow control valve used to regulate airflow in pneumatic systems, particularly for exhaust-air speed control of suitable pneumatic drives.
What is the valve function?
The GRLA series is designed for one-way exhaust-air flow control.
What is the threaded pneumatic connection?
The GRLA-1/8-QS-4-D uses a G1/8 threaded pneumatic connection.
What tube size does the QS connection accept?
The QS-4 push-in connection is intended for pneumatic tubing with a 4 mm outside diameter.
What does GRLA indicate in this FESTO valve series?
GRLA identifies a one-way flow control valve configuration intended for exhaust-air flow control.
What does QS-4 indicate?
QS-4 identifies the push-in connection for 4 mm outside-diameter pneumatic tubing.
Can this valve be used to adjust cylinder speed?
The one-way flow control function can be used to regulate airflow and therefore adjust the movement speed of suitable pneumatic cylinders and drives.
How is the flow adjusted?
The flow restriction is mechanically adjusted using the valve's adjustment element.
Where is a one-way flow control valve typically installed?
It is commonly installed in pneumatic drive circuits where controlled airflow is required for motion-speed adjustment.
What should be checked before ordering?
Verify the complete GRLA-1/8-QS-4-D model designation, G1/8 threaded connection, QS-4 tube connection, required flow-control direction and the pneumatic requirements of the target system.
Need help confirming a model?
Send us your part number and technical requirements.
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