The Electric Square Ventilation Butterfly Valve is a high-performance automatic flow control device designed specifically for square and rectangular ventilation ducts.It combines a precision electric actuator with a robust square valve body,realizing remote and automatic 90°rotation of the butterfly plate to regulate,throttle,or shut off airflow,flue gas,and dust-laden gas efficiently.Widely applied in HVAC systems,industrial ventilation,flue gas treatment,and environmental protection projects,it is favored for its convenience,reliability,and energy-saving advantages.

Constructed with an integrated square flange,the valve perfectly matches square ducts without transition adapters,simplifying installation and saving space.The valve body is available in galvanized steel,carbon steel(Q235),or stainless steel(SS304/SS316),ensuring durability and corrosion resistance.The center-line mounted butterfly plate features a streamlined design,minimizing flow resistance and ensuring stable operation even under high airflow.

The electric actuator offers two options:on-off type for full open/close control and regulating type for proportional airflow adjustment via 0-10V or 4-20mA signals,compatible with PLC systems for centralized remote control.A manual emergency handle is equipped for backup use during power failures.Sealing options include metal hard seal(for-20℃~350℃high-temperature scenarios)and EPDM/PTFE soft seal(for low leakage,≤3%standard).

With nominal pressure of PN0.1-0.6MPa,the valve suits clean air,hot flue gas,and dust-laden air.Its compact structure,low pressure drop,and overload/over-temperature protection ensure safe,long-term operation.Customizable sizes(DN100-DN3000)and voltages meet diverse on-site needs,making it an ideal choice for automatic airflow management in industrial and commercial fields.