Aerodyne introduces the High Temperature StopTight Knife Gate Valve, a dry material (like sawdust) handling valve designed to control flow in a bulk-material handling system. The Knife Gate can manage the flow of gravity-fed solids, powders, and granules from hoppers, silos, screw conveyors, mixers, and gravity chutes and has a thin design that allows it to operate where other valves cannot be placed, says the company. It features a tapped inlet and outlet flanges for in-line or open discharge use. The slide plate is supported by adjustable bronze cam-guides. A high temperature seal around the slide plate prevents excess material from being pulled out while the valve operates and the seal allows it to withstand temperatures of up to 300°F. Using a linear motion, a blade advances until the passage is closed or withdraws until  the passage is open. When the passage is closed, the valve prevents any loss of positive or negative pressure from the material handling system. This valve is available in 8", 10", and 12" sizes.

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