Festo VFOF-LE-BAH-G14-Q8
One-way flow control valve
Festo VFOF
| Valve function | Exhaust air one-way flow control function |
| Standard nominal flow rate in flow control direction | 590 l/min |
| Standard nominal flow rate in blocked direction | 310 l/min - 540 l/min |
| Pneumatic connection, port 1 | QS-8 |
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The VFOF-LE-BAH-G14-Q8 one-way flow control valve is designed for precise regulation of airflow in pneumatic systems. Featuring G1/4 ports and a QS-8 connection, it allows for controlled adjustment of flow rate in one direction while preventing backflow. This valve is constructed from high-quality materials, ensuring durability and resistance to wear and harsh conditions. Its compact and versatile design ensures easy integration into various industrial applications, such as automation and material handling.
Festo VFOF One-way flow control valve.
VFOF-LE-BAH-G14-Q8 Datasheet:
| Valve function | Exhaust air one-way flow control function |
| Selection of additional functions | Actuated non-return valve |
| Pneumatic connection, port 1 | QS-8 |
| Pneumatic connection, port 2 | G1/4 |
| Type of actuation | Manual |
| Pilot air port 21 | QS-8 |
| Adjustment component | Internal hexagon |
| Type of mounting | Screw-in |
| Standard nominal flow rate in flow control direction | 590 l/min |
| Standard nominal flow rate in blocked direction | 310 l/min ... 540 l/min |
| Operating pressure | 0.02 MPa ... 1 MPa |
| Operating pressure | 0.2 bar ... 10 bar |
| Operating pressure | 2.9 psi ... 145 psi |
| Pilot pressure | 0.2 MPa ... 1 MPa |
| Pilot pressure | 2 bar ... 10 bar |
| Pilot pressure | 29 psi ... 145 psi |
| Ambient temperature | -10 °C ... 60 °C |
| Material housing | PBT |
| Explosion protection | Zone 2 (ATEX)Zone 22 (ATEX) |
| Mounting position | optional |
| Type act., cont. n.-r. func. | Pneumatic |
| Manual exhaust function | Non-detenting |
| Symbol | 00991958 |
| Rotatability | 360°/no continuous swivelling permissible |
| Operating pressure complete temperature range | 0.02 MPa ... 1 MPa |
| Operating pressure complete temperature range | 0.2 bar ... 10 bar |
| Operating pressure complete temperature range | 2.9 psi ... 145 psi |
| Standard flow rate in flow control direction 0.6->0 MPa (6->0 bar, 87->0 psi) | 940 l/min |
| Standard flow rate in non-return direction 0.6->0 MPa (6->0 bar, 87->0 psi) actuated | 830 l/min ... 1000 l/min |
| Standard flow rate in non-return direction 0.6->0 MPa (6->0 bar, 87->0 psi) non-actuated | 840 l/min ... 1000 l/min |
| Standard nominal flow rate in non-return direction actuated | 315 l/min ... 540 l/min |
| Standard nominal flow rate in non-return direction non-actuated | 310 l/min ... 540 l/min |
| Switching time off | 11 ms |
| Switching time on | 8 ms |
| 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 |
| Media temperature | -10 °C ... 60 °C |
| Pilot medium | Compressed air to ISO 8573-1:2010 [7:4:4] |
| Nominal torque | 10 Nm |
| Tolerance for nominal tightening torque | ± 20% |
| Permissible actuation moment, regulating screw | 1 Nm |
| Product weight | 73.9 g |
| Material covering | ES-BE |
| Note on materials | RoHS-compliant |
| Material cover | PBT |
| Material seals | NBR |
| Material hollow bolt | Wrought aluminium alloy |
| Material sleeve | Wrought aluminium alloy |
| Material release ring | POM |
| Material adjusting screw | Brass |
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