How to accurately select fountain pump?

1, the first thinking fountain pump capacity and head.
Universal fountain, with no pattern just satisfied with head, flow almost can also. With synchronized fountain add color necessary satisfactory capacity as large as possible, head as high as possible can't differ a lot.
2, using the fountain pump function standard table choose the pump type
Fountain pump factory in product catalog provides this kind of form, each type of function in the table with three rows of data, all will be subject to which line? Usually planning flow and planning should lift and function consistent with the center line of the numerical tables list, or come near, and it is necessary to fall within the upper and lower two rows scale, due to the selection of fountain pump, select center value is the efficient area, the scale is the pump work fountain pump of this type is considered fit actual needs, is one of the selected pump.
3, using the fountain pump selection table choose the pump type
According to conclude that traffic, head of planning and the planning in the selection table, horizontal headers to find out the head and planning phase of the conjunction or near the head value; To find consistent with planning flow or the vertical header phase near flow numerical, vertical and horizontal intersect at small squares, it indicates the pump type, preliminary selected multistage pump type. But sometimes present two type pump is happy with the plan request, at this point, but the scheme comparison between these two kinds of pump type, technical and economic analysis, and then choose set in a suitable type of pump. The selected pump to contrast is simple and convenient.