Flap valves are gravity-assisted bulk solids flow control valves designed to open when material is present and close to prevent backflow or air ingress. They often feature pneumatic or manual actuation for controlled operation. These are rugged devices for simple shut-off and flow control at hopper/discharge points.

Typical applications:

• Hopper or silo discharge control
• Pneumatic conveying feed points
• Transfer chutes on bulk lines
• Dust control isolation points

Why it matters

• Simple, low maintenance solution for solids isolation
• Ideal for gravity-fed applications
• Can be automated with pneumatic actuation