Model t30 axial-flow ventilator Model t30 axial-flow ventilator is a low-pressure axial-flow ventilator with simple structure and low noise. It is applicable the ventilation, air-ex-change, warm air radiation reinforcement in the factory house, warehouse, office, residence and so forth, it can also remove the casing and to be in íºcstalled in the exhaust pipeline in order to enhance pitot of air stream in the pipelines.