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A pneumatic silo gate valve uses compressed air to rapidly raise or lower a flat gate, or "blade," which either blocks or opens the flow of material through a silo outlet or pipeline. An air-driven piston and rod assembly, connected to the gate's stem, moves the gate vertically against a seal to control the product flow. When the air is exhausted, the spring-loaded mechanism or the compressed air can reverse the action, allowing for fast, automated operation.
