In 2008, Kinze introduced bulk-fill systems with reliable air seed delivery. With just one moving part (the blower fan), the system is simple to operate and very reliable. Seed is distributed from the hoppers to a seed entrainer where it's stored and suspended in a stream of air. When row units require more seed, airflow increases. When the seed chambers fill up, airflow decreases and seed delivery slows or stops until more seed is needed.