1. Purpose:
       Model HW pump is a horizontal single stage single suction volute mixed flow pump and suitable for transporting pure water or the other liquid with both physical and  chemical natures similar to those of  water, with the  temperature   of   the  liquid to be transported not over 50 , for the farm land irrigation, industrial and city water supply and drainage etc.  multiple places.The pumps performance  range:  flow 130~9000m /h,  head  3.5~22m.
2. Features:
        Simple  structure,  reliable  use,  easy  installation, high  efficiency, small  body, light  weight.

3. Mode  of  actuation:
       Direct  and  variable  actuations.  The  common  movers   are  motor and diesel engine. Please note the model (power, rotating speed) of the mover so as to make sure of  the norms of the clutch or the belt pulley .
4. Water  pump  direction:
       Viewing from  the pump  inlet, the  impeller rotates  counter-clockwise generally (clockwise with 650HW-5, -7, -10 pump).
5. Feature:
        1. Model HW pump mainly consists of pump cover , impeller, pump casing,  shaft, muff and bearing body (aperture 350mm) or bearing stand (aperture 400mm) etc. parts (Fig.1
and 2).
       2. The pump cover  is connected to the pump casing and the water-in pipe separately. There should a  proper   interval  between the planes of both pump cover and impeller , too small
interval will produce friction; while too big will  cause the pressured water  inside  of  the  pump  to  flow back greatly to have  the pump efficiency lowered.  The practically used proper  interval  is  0.3~0.7mm (push  the  pump  shaft  to  the  pump  inlet)  and the interval can be adjusted through increasing or decreasing the paper pad thickness.