Product Description
The Festo VBNF is a flat, rotatable piloted check valve designed as a shutdown valve, offering an integrated manual override option in a minimal height package . This valve enables emergency stop functionality, holding a piston’s position even vertically, while allowing manual venting of pneumatic drives for maintenance .
Key Features & Advantages:
Piloted Non-Return Function with Emergency Stop: The valve shuts off exhaust air from the drive when no pilot signal is present, temporarily stopping the drive and holding its position; applying a pilot signal allows exhaust air to escape .
Minimal Height & 360° Rotatable: The compact, flat design allows the valve to bolt directly to the actuator port, lying flush against the actuator to save space; it can be rotated 360° horizontally while installed for precise alignment of connections .
Integrated Manual Exhaust Function: Allows technicians to manually vent a pneumatic drive during maintenance or troubleshooting without requiring additional external vent valves .
High Flow Rate in Compact Package: Delivers up to 1,100 L/min flow rate (depending on port size) despite its flat profile, ensuring minimal impact on system performance .
Single Compact Unit Replaces Multiple Components: Combines the functions of a piloted check valve, shut-off valve, and manual override into one unit, reducing installation complexity, potential leak points, and inventory requirements .
Technical Specifications:
Brand: Festo
Model Series: VBNF
Product No. (Example): VBNF-LBA-G18-Q6 (547885)
Valve Function: Piloted non-return with manual exhaust
Standard Nominal Flow Rate: 500 – 1,100 L/min (depending on port size)
Operating Pressure: 0.02 – 10 bar (0.2 – 10 bar)
Port Sizes Available: G1/8, G1/4
Push-in Sizes Available: QS-4, QS-6, QS-8
Design: Flat, rotatable shut-off valve
Housing Material: PBT (Polybutylene Terephthalate)
Seal Material: NBR
Corrosion Resistance Class: CRC 2 – Moderate corrosion stress
Ambient Temperature: -10°C to +60°C
Medium Temperature: -10°C to +60°C
Switching Time (Off/On): 9 ms / 6 ms
Operating Medium: Compressed air to ISO 8573-1:2010 [7:4:4]
Lubrication: Lubricated or non-lubricated operation
Certifications: RoHS compliant
Ideal For:
Emergency stop circuits, intermediate position holding for pneumatic cylinders, vertical load holding, maintenance venting, compact actuator assemblies where space is limited, pneumatic systems requiring controlled stopping and manual release capability.
Why Choose FESTO VBNF?
Choose the Festo VBNF for its ultra-flat, rotatable design that replaces three separate components, its integrated manual override for easy maintenance, and its ability to hold a piston’s position even in vertical applications.
Tags:
#Festo #VBNF #PilotedCheckValve #ShutOffValve #EmergencyStop #ManualOverride #MalaysiaSupplier
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