Engine Driven or PTO Driven, which ever you choose Air-O-Fan has the model to fit your growing needs. With 4 engine driven orchard models, 9 PTO driven orchard models, 5 PTO driven vineyard models, a full herbicide model line, as well as a full arsenal of tank sizes, fan sizes, tire options, indented tank options, pumps, quick fills, turning hitches, targeting and rate controlling technology, as well as your standard manual, hydraulic, or electric spray valve options. Air-O-Fan is constantly listening to our growers to provide what you need to make your spraying program more efficient and more effective. We manufacture all of our components (aside from tires, pumps, bearings, engines, gear-boxes, etc.) and we custom build our steel axial flow fans to fit your spraying needs (PTO models only), whether you are try to achieve maximum performance or trying to get the best performance from an under powered tractor Air-O-Fan has a solution. Simple in design, built from the finest products, engineered to withstand the test of time in the field, and a strong history of reliable service to keep you in the field when it matters most.