One-way flow control function for exhaust air Pneumatic connection, port 1 QS-6 Pneumatic connection, port 2 G1/8 Type of actuation
Specifications
SKU
8001459
Details
The Festo VFOF-LE-BAH-G18-Q6 (Festo Part Number: 8001459) is a high-performance, flat-design one-way flow control valve used to regulate the piston speed of pneumatic cylinders by controlling exhaust air. It uniquely combines a flow regulator, a piloted non-return (check) valve, and a manual exhaust override function into a single space-saving unit.
Part Number Breakdown
According to official Festo Product Line Specifications:
- VFOF: One-way flow control valve, flat design.
- L: L-shaped outlet configuration.
- E: Exhaust air one-way flow control function.
- BA: Additional functions: Piloted non-return check valve and manual exhaust.
- H: Adjustment via internal hexagon socket.
- G18: G1/8" thread connection (Port 2).
- Q6: QS-6 push-in connector for 6mm OD tubing (Port 1).
Key Specifications
- Flow Rate: 240 L/min standard nominal flow in control direction.
- Operating Pressure: 0.2 bar to 10 bar max.
- Temperature Range: -10°C to +60°C.
- Adjustability: Can be rotated 360° horizontally in the assembled state for flexible tube orientation.
- Materials: Housing is made of durable PBT plastic, and the banjo bolt is constructed from wrought aluminium alloy.
- Seals: Nitrile rubber (NBR).
Core Functionality
- Speed Control: Regulates the volume of escaping exhaust air to smooth out cylinder stroke movements.
- Intermediate Stopping (Piloted Check): If the pneumatic control signal drops out, the valve immediately shuts off the exhaust air path, stopping the drive briefly to hold its position.
- Manual Venting: Allows manual exhaust of air trapped in the cylinder for maintenance or troubleshooting.
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