The Square Electric Ventilation Butterfly Valve is a high-efficiency,automatic flow control device specifically designed for square and rectangular ventilation ducts.It integrates a precision electric actuator with a square valve body,enabling remote,automatic 90°rotation of the butterfly plate to regulate,throttle,or shut off airflow,flue gas,and dust-laden gas.This valve is widely recognized for its reliability,easy operation,and perfect compatibility with industrial and commercial ventilation systems,making it an ideal choice for automatic airflow management in various high-demand scenarios.

1.Structure&Material Configuration

-Valve Body:Integrated square flange design,tailored to match square/rectangular ducts without transition adapters.Material options include galvanized steel,carbon steel(Q235),and stainless steel(SS304/SS316),ensuring corrosion resistance and structural durability.

-Butterfly Plate:Center-line mounted,with a smooth,streamlined structure that minimizes flow resistance.Made of high-strength steel plate(welded or stamping process),it features strong rigidity and no deformation under high airflow or temperature changes.

-Transmission Shaft:High-strength anti-rust steel shaft,equipped with wear-resistant bushings(brass or PTFE)to ensure smooth rotation,no jamming,and long service life.Pinless connection with the butterfly plate enhances stability and reduces maintenance needs.

-Sealing System:Dual options for different working conditions:

-Hard Metal Seal:Suitable for high-temperature environments,resistant to thermal expansion and wear,applicable to flue gas and hot air systems.

-Soft Seal(EPDM/PTFE):Low leakage(≤1-3%standard),ideal for clean air,low-temperature ventilation,and scenarios requiring tight sealing.

-Electric Actuator:Optional on-off type(for full open/close control)or regulating type(for proportional airflow adjustment).Equipped with manual emergency handle for backup operation during power failure.Supports PLC control,0-10V or 4-20mA signal,enabling centralized remote control.

2.Core Features

-Automatic&Remote Control:Electric drive eliminates manual operation,compatible with industrial control systems(PLC,DCS)for centralized management,improving operational efficiency and reducing labor costs.

-Perfect Duct Compatibility:Square design directly matches square/rectangular ducts,no need for transition pieces,simplifying installation and saving space in limited duct layouts.

-Energy-Saving&Low Resistance:Fully open state ensures minimal pressure drop,reducing the load of ventilation fans and saving energy for long-term operation.

-Durable&Reliable:All-welded structure,no internal loose parts;anti-seize design prevents jamming caused by dust accumulation or thermal expansion.Overload and over-temperature protection ensure safe long-term operation.

-Customizable Design:Flexible customization of square sizes(DN100-DN3000),voltage(AC220V,AC380V,DC24V),control signal,and seal type to meet on-site engineering requirements.