Scope of application: 
 1.1 and Zone 2 dangerous places; 
 2 II A, Class B explosive gas environment. 
 Product Features: 
 1 explosion-proof motor, blades, hair dryer, frame, hood, safety nets and other components; 
 2 The shell is made of steel or fiberglass; 
 Cable or steel wiring; 
 (4) for GB3836-2000, IEC60079 standard request. 
 Main technical parameters: 
 Explosion-proof mark: Exd Ⅱ BT4 
 (2) Protection class: IP54 
 (3) corrosion rating: WF1 
 (4) Rated voltage: AC220V/380V 
 (5) Air flow: 1450m3 / h ~~ 2500m3 / h 
 6. Pressure: 62Pa ~ 183Pa 
 Impeller diameter: Φ300mm ~ Φ1120mm 
 Inlet thread: G3 / 4 " 

 BDW has-series explosion-proof roof ventilator 

 Scope of application 

 1.1 and Zone 2 hazardous gas areas; 

 2.Can be used in IIA and Category IIB class T1-T4 group explosive gas or vapor environment; 

 (3) the pressure for higher places. 

 Features 

 (1) of this product by explosion-proof motor, impeller, air duct, hood, transmission components, loose-leaf damper, anti-bird net, safety nets, and other components; 

 Two transmission forms: motor directly connected; 

 Overhaul the way: demolition hood overhaul.