Aspects of the invention provide a system for filling a pressurized tank of an air cart or other storage element while operating to deliver product to a ground engaging tool, such as for seeding or fertilizer placement. A rotary air lock coupled between a feeder and a storage tank includes a plurality of vanes providing pockets in between for holding particulate materials. The rotary air lock rotates the pockets from the feeder to a sealed area and from the sealed area to the storage tank. As such, the rotary air lock transfers the particulate materials to the storage tank while substantially maintaining a pressure in the storage tank. The system may be filled during field operations, and a filling or conveyor system may be controlled via a vehicle to vehicle (V2V) operation.
