Abstract: An apparatus to prevent formation of a vortex has a ring-shaped gasket having a bottom surface and a top surface; and a blade assembly mounted on the top surface and comprising a center portion and plural blades of a defined height. Each of the blades extend from the center portion to the top surface, with each pair of the plural blades defining a filter based at least in part on spacing between the pair of plural blades.

Abstract: A boom height control system for an agricultural crop sprayer includes a spray boom and an actuator arranged to adjust a position of at least a portion of the spray boom in response to a position adjustment command. A speed sensor is provided to measure a forward speed of the sprayer and generate a speed value. A position sensor is provided to measure a current position of the spray boom portion and generate a current position value. A controller is in communication with the speed sensor, the position sensor and the actuator. The controller is configured to generate the position adjustment command based upon a target position value, a current position value and a speed value.

Abstract: An apparatus to prevent formation of a vortex has a ring-shaped gasket having a bottom surface and a top surface; and a blade assembly mounted on the top surface and comprising a center portion and plural blades of a defined height. Each of the blades extend from the center portion to the top surface, with each pair of the plural blades defining a filter based at least in part on spacing between the pair of plural blades.

Abstract: An apparatus to prevent formation of a vortex has a ring-shaped gasket having a bottom surface and a top surface; and a blade assembly mounted on the top surface and comprising a center portion and plural blades of a defined height. Each of the blades extend from the center portion to the top surface, with each pair of the plural blades defining a filter based at least in part on spacing between the pair of plural blades.