Product

VFS – Butterfly Valves

VFS

VFS Butterfly Valves — Proven WAMGROUP solution for reliable flow interception of powders and granular materials in silos, hoppers and conveying systems.

Key Technical Specifications Product Type: Butterfly Valve Series: VFS Application: Powdery and granular materials Operation: Manual or actuated Opening / Closing: 90° Valve Body: Robust industrial construction Disc Options: Cast iron, engineering polymer or stainless steel, depending on configuration Seal: Replaceable sealing system Installation: Silos, hoppers, feeders, screw conveyors and process equipment Actuation: Manual lever, pneumatic actuator and other actuator options Pressure Resistance: Up to approx. 0.2 bar (2.9 PSI) for applicable configurations ATEX: ATEX versions available Maintenance: Limited number of easily replaceable components Configuration: Different sizes and connection configurations available Material Compatibility: Cement, powders, granulates and abrasive bulk solids WAM's flow-interception brochure identifies VFS configurations including V1FS and V2FS. The V1FS version uses a top flange and lower bead section for connection to flexible components, while V2FS uses matching upper and lower flanges. Main Advantages Robust and durable construction Proven industrial design More than one million units in operation worldwide Compact dimensions Few components Easy maintenance Replaceable sealing components Manual and automated operation Pneumatic actuator compatibility ATEX versions available Suitable for abrasive materials Wide range of applications Typical Applications Concrete batching plants Cement plants Drymix and mortar plants Silos and hoppers Screw conveyors and feeders Mineral processing Aggregates Mining and quarrying Chemical processing Food and feed industries Bulk-material handling systems

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VFS Butterfly Valves are robust and highly reliable shut-off valves designed for the interception and control of powdery and granular bulk materials. With more than one million units operating worldwide, the VFS range represents one of WAMGROUP’s most established solutions for bulk-material handling applications.

The compact and durable design makes VFS suitable for installation beneath silos, hoppers, feeders, screw conveyors and other process equipment where reliable material flow interception is required.

The valve is designed with a limited number of components, making it easy to install, inspect and maintain. Different disc and sealing configurations allow the valve to be adapted to the handled material and specific operating conditions.

VFS valves can be operated manually or fitted with pneumatic or other WAM actuators for automated opening and closing. WAM’s CP pneumatic actuators, for example, are specifically designed for 90° opening and closing of WAM butterfly valves.

The VFS range is particularly suitable for cement, concrete, drymix, minerals, aggregates, chemicals, food and other bulk-material processing applications.

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