Structural characteristics and uses 

 This valve is ideal for ventilation and dust removal and environmental systems open and close and adjust the equipment, its unique structure, made of high quality alloy steel plate welding, a small size, light weight, large flow cross-section, opening and closing a flexible, field operations and remote control. Used in metallurgy, mining, power plants, building materials, medicine, chemical industry, light industry and other industries. 

 Production to performance: 

 Nominal Pressure: 0.01MPa 
 Suitable temperature: ≤ 300 ℃ 
 Medium: air, flue dust 
 Power supply (voltage): Three-phase 380V · AC; Air pressure :0.4-0 .6 MPa 
 Leak rate: <1.5% 



 QD941H/W-0.1 QD641H/W-0.1 QD341H/W-0.1 major and Connection Dimensions Table