One-Way Flow Control
The GRLA-18-QS-4-D combines adjustable flow restriction with a non-return function for pneumatic exhaust-air flow control.
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Technical specifications, features, applications and purchasing information.
| Brand | FESTO |
| Model Number | GRLA-18-QS-4-D |
| Product Category | One-Way Flow Control Valve |
| Series | GRLA |
| Valve Function | Exhaust air one-way flow control |
| Adjustment Element | Rotary knob |
| Pneumatic Connection 1 | G1/8 |
| Pneumatic Connection 2 | QS-4 push-in connector for 4 mm tubing |
| Operating Medium | Compressed air |
| Mounting Position | Any |
| Design | Elbow design |
The GRLA-18-QS-4-D combines adjustable flow restriction with a non-return function for pneumatic exhaust-air flow control.
The threaded pneumatic connection is G1/8 for integration with suitable pneumatic components and ports.
The push-in connection is designed for 4 mm pneumatic tubing, supporting compact tube installation.
The valve configuration is intended for exhaust-air flow control, commonly used to adjust pneumatic actuator movement.
A rotary adjustment element allows the pneumatic flow restriction to be set according to the application requirements.
The angled connection arrangement supports installation directly at suitable pneumatic ports where installation space is limited.
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What is FESTO GRLA-18-QS-4-D?
It is a one-way flow control valve for pneumatic applications, combining adjustable throttling with a non-return function.
What is the valve used for?
The GRLA configuration is intended for exhaust-air flow control and can be used to regulate the movement of suitable pneumatic actuators.
What threaded connection does it use?
The documented threaded pneumatic connection is G1/8.
What tubing size does the QS connection accept?
The QS-4 push-in connection is designed for pneumatic tubing with a 4 mm outside diameter.
Is GRLA-18-QS-4-D a standard throttle valve?
It is a one-way flow control valve that combines a throttle function with a non-return function.
How is the flow adjusted?
The flow restriction is adjusted manually using the valve's rotary adjustment element.
What operating medium is used?
The valve is intended for suitable compressed-air pneumatic applications.
Can it be installed directly on a pneumatic cylinder?
It can be considered where the G1/8 threaded port, QS-4 tubing connection and other technical requirements match the pneumatic component and installation.
Can GRLA-18-QS-4-D replace another flow control valve?
It can be considered after the complete model number and technical requirements have been checked. Thread size, tube diameter, flow-control direction and installation requirements should be verified against existing system requirements.
What should be checked before ordering?
The complete model number, G1/8 threaded connection, QS-4 tube connection, valve function and installation requirements should be checked before ordering.
Send us your part number and technical requirements.