... type or a vertical one, which the vane wheel is mounted directly on the motor shaft extension.The ... rotation-viewed from the motor side, the vane wheel rotates anti clock-wise and indicated as L.Right ... of ventilator, according to the rotating direction of vane wheel, is made into the following main types. In ... ,Licang District,Qingdao,Shandong province,China Shipbuilding Fan blower--Centrifugal fan