Design Features:Fabricated Material Handling Knife Gate Valves are specifically designed to be used on dry bulk materials where the valve is installed horizontally in a vertical pipe. A displacement pocket is provided which enables the valve to close through a standing column of packed material. Bonneted or bonnetless configuration. Available with round, square, rectangular or combination port with a round port on one side and a square or rectangular port on the other side, eliminating the need for a transition piece.Click on the animation to see how the Hilton Material Handling Knife Gate Valve pushes dry material into a displacement pocket, allowing the valve to fully close on a standing column. The animation also shows how the gate guide maintains gate alignment throughout the stroke.