Product Description
The Festo VFOF is a flat, rotatable one-way flow control valve featuring a functional combination of a throttle check valve and a piloted non-return valve, designed for supply air or exhaust air flow control . The 360° horizontal rotatability when mounted and side-operable compact design, combined with a high flow rate, make it ideal for precise cylinder speed control in space-constrained automation systems.
Key Features & Advantages:
Functional Combination of Flow Control and Piloted Check Valve: Integrates a throttle check valve with a piloted non-return valve in a single unit, allowing flow restriction in one direction while providing free flow in the opposite direction with a pilot-operated locking function for enhanced pneumatic circuit control .
Flat, Compact and Side-Operable: The flat design with an internal hexagon adjustment screw allows operation from the side even in tight spaces, and the L-shaped outlet further simplifies installation in confined automation environments .
360° Horizontal Rotation in Assembled State: The valve body can be rotated horizontally through 360 degrees after installation, allowing precise alignment of tubing connections without removing the valve, simplifying integration into complex systems .
High Flow Performance for Efficient Operation: Delivers high standard nominal flow rates up to 590 L/min in the flow control direction and up to 540 L/min in the non-return direction when actuated, ensuring minimal impact on cylinder cycle times .
ATEX Hazardous Location Certified: Suitable for use in Zone 2 and Zone 22 explosive atmospheres, making it applicable to a wide range of industrial environments requiring explosion protection .
Technical Specifications:
Brand: Festo
Model: VFOF Series
Product No. (Example): VFOF-LE-BAH-G18-Q6 (8001459)
Valve Function: Exhaust air one-way flow control with piloted non-return function
Pneumatic Connections: Push-in QS-4, QS-6, QS-8 / Thread G1/8, G1/4
Pilot Air Port 21: QS-4, QS-6, QS-8
Adjustment Element: Internal hexagon
Actuation Type, Piloted Non-Return Function: Pneumatic
Manual Exhaust Function: Non-detenting (push-button)
Standard Nominal Flow Rate (Flow Control): 240 – 590 L/min (depending on variant)
Standard Nominal Flow Rate (Non-Return Actuated): 150 – 540 L/min
Operating Pressure: 0.2 – 10 bar
Pilot Pressure: 2 – 10 bar
Switching Time (On / Off): 6 ms / 9 ms (G1/8 variants)
Rotatability: 360° (continuous rotation not permissible)
Mounting Type: Screw-in
Protection Class: IP65 (when mounted)
ATEX Certification: Zone 2 and Zone 22
Cleanroom Suitability: Class 4 according to ISO 14644-1
LABS (PWIS) Conformity: VDMA24364-B1/B2-L
Housing Material: PBT (Polybutylene Terephthalate)
Hollow Bolt Material: Wrought aluminum alloy
Seal Material: NBR
Ambient / Medium Temperature: -10°C to +60°C
Product Weight: 29.2 g (G1/8 variant)
RoHS Compliant: Yes
Ideal For:
Precise speed regulation of pneumatic cylinders in both advancing and retracting directions with pilot-operated locking capability, applications requiring both flow control and piloted check valve functions in a single compact unit, tight space installations requiring side operation and 360° rotatable connections, hazardous area installations (ATEX Zone 2 and 22), cleanroom environments (Class 4), and industrial automation systems requiring reliable pneumatic cylinder speed control.
Why Choose FESTO VFOF?
Choose the Festo VFOF for its functional combination of one-way flow control and piloted check valve in a flat, side-operable design, 360° rotatability for easy tube alignment even in assembled state, high flow rates up to 590 L/min, and ATEX certification—delivering compact, versatile pneumatic cylinder speed control for Malaysian industrial automation applications.
Tags:
#Festo #VFOF #OneWayFlowControlValve #VFOFLEBAHG18Q6 #PilotedCheckValve #FlowControlValve #ATEX #CylinderSpeedControl #MalaysiaSupplier
Malaysia
