Festo GRLA-3/8-QS-8-D
One-way flow control valve
Festo GRLA
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The GRLA-3/8-QS-8-D one-way flow control valve is engineered for precise regulation of airflow in pneumatic systems. With 3/8-inch ports and QS-8 connections, it offers controlled adjustment of flow rate in one direction while preventing backflow. This valve features a durable construction, providing excellent resistance to wear and harsh environments. Its compact and versatile design ensures easy installation and integration into various applications, including automation and material handling.
Festo GRLA One-way flow control valve.
GRLA-3/8-QS-8-D Datasheet:
| Valve function | Exhaust air one-way flow control function |
| Pneumatic connection, port 1 | QS-8 |
| Pneumatic connection, port 2 | G3/8 |
| Adjustment component | Slotted head screw |
| Type of mounting | Screw-in |
| Standard nominal flow rate in flow control direction | 820 l/min |
| Standard nominal flow rate in blocked direction | 450 l/min ... 850 l/min |
| Ambient temperature | -10 °C ... 60 °C |
| Maritime classification | See certificate |
| Mounting position | optional |
| Symbol | 00991452 |
| Operating pressure complete temperature range | 0.2 bar ... 10 bar |
| Standard flow rate in flow control direction 0.6->0 MPa (6->0 bar, 87->0 psi) | 1300 l/min |
| Standard flow rate in non-return direction 0.6->0 MPa (6->0 bar, 87->0 psi) | 1080 l/min ... 1420 l/min |
| Operating medium | Compressed air to ISO 8573-1:2010 [7:4:4] |
| Note on operating and pilot medium | Lubricated operation possible (in which case lubricated operation will always be required) |
| LABS (PWIS) conformity | VDMA24364-B1/B2-L |
| Cleanroom class | Class 4 according to ISO 14644-1 |
| Media temperature | -10 °C ... 60 °C |
| Nominal torque | 10 Nm |
| Tolerance for nominal tightening torque | ± 10% |
| Product weight | 60 g |
| Material screwed plug | Wrought aluminium alloy |
| Note on materials | RoHS-compliant |
| Material seals | NBR |
| Material release ring | POM |
| Material adjusting screw | Brass |
| Material swivel fitting | Die-cast zincChromated |
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