... forced ventilation 3.ISO&CE BOILER CENTRIFUGAL BLOWER FANCell: + 86 18790510806Company profile:XinXiang blower factory CO., LTD.We have more ... are generally consist of the following product parts:case, impeller, air inlet, motor, system integral pedestal, main shaft, driving ... the casing, according to the drawings corrective air inlet and impeller gap between size, and keep axis horizontal position2 ...