The Optimal Balance of Flow and Pressure

The Mixed-Flow Roof Ventilator is a high-efficiency hybrid solution, masterfully combining the high-volume airflow of axial fans with the superior pressure capability of centrifugal units. Engineered for roof-mounted exhaust systems with medium static pressure demands, this products is the perfect choice when ductwork, valves, or air treatment devices create resistance that exceeds the capacity of standard axial fans. It is ideally suited for laboratory fume exhaust, commercial kitchen supply air, and industrial process ventilation.

High-Efficiency Performance with Advanced Design

Tested to AMCA 260 standards, the mixed-flow roof ventilator delivers a powerful airflow range of 10,000–30,000 m³/h and can overcome static pressures from 300 to 800 Pa. Its aerodynamic efficiency is exceptional, achieving 65–75% total efficiency with an operating power range of 5.5–30.0 kW. The core of its performance is an aerodynamically optimized mixed-flow impeller, housed in a sturdy galvanized or stainless steel casing. It is powered by an outdoor-rated motor (7.5–37 kW, 380V/50Hz, typically 4-pole, IP55, F-class, IE3), often mounted in a bypass chamber for better cooling and maintenance access. Operating between 1450–2900 r/min, it maintains a commendably low noise level of 70–80 dB(A) at 3 meters. High-precision G2.5 dynamic balancing ensures smooth, reliable operation with vibration levels ≤4.5 mm/s.

Robust, Connected, and Ready for Complex Systems

Built for reliability and easy integration, this products features Grade 12 wind resistance and IPX4 weather protection. Its inlet and outlet are equipped with flanges for simple and secure connection to ductwork, and it includes a built-in waterproof sealing system. Optional backdraft dampers are available. The unit meets standard lightning protection requirements with grounding terminals, and its structural design satisfies seismic codes for 8-degree fortification intensity. In applications like exhaust systems for electronics manufacturing cleanrooms, the mixed-flow roof ventilator reliably overcomes the resistance of scrubbers or filter banks, delivering an optimal balance of energy savings, pressure performance, and quiet operation.

Key Performance Parameters

Parameter	Value / Range
Airflow (m³/h)	10,000 – 30,000
Static Pressure (Pa)	300 – 800
Total Efficiency (%)	65 – 75
Motor Power (kW)	7.5 – 37
Operating Power (kW)	5.5 – 30
Speed (r/min)	~1450 – 2900
Noise Level @3m (dB(A))	70 – 80
Protection Rating	IP55
Insulation Class	F
Energy Efficiency Class	IE3
Wind Resistance	Grade 12
Rain Protection	IPX4
Balancing Grade	G2.5
Vibration Velocity (mm/s)	≤4.5