1、IS series are single stage（axial inhalation） centrifugal pumps, suitable for industrial and city applications such as water supplying, draining , and also can be used for agriculture irrigation and drainage. It is suitable for conveying clear water or the others chemical and physical liquids whose characteristic is non-aggressive and similar to the clean water. The Max Temperature of Fluid is up to +80°C.
2、IS series performance s
cope:（Calculated by the designed point）
Speed :2900r/min and 1450r/min
Inlet diameter :50-200mm
Capacity:6.3-400 m/h
Head:5-125m
3、Choice of the pump: when the consumer choosing the specification of the water pump, the following notes should be paid attention. The capacity of the chosen water pump should be less than the normal water capacity of the well or the others water source. And the low water season factor should be considered properly. Head of the chosen water pump should be according to the practical needed delivery lift , and the pipeline loss of the water pump should be considered. When choosing the water pump, the installation height of the water pump should be considered, that is the length of perpendiculars between inhaled liquid level and water pump axes should be lesser than the assigned height of the pump. The estimation of the installation height （ Hsz） of the water pump
Hsz≤Ha-Hv-aHs-[NPSH]
Hsz≤10.33-△Hs-[NPSH]
In the formula:Ha=10.33（m）standard atmosphere pressure （ water column ）
Hv=0.24（m） vaporizationpressure （ water column ） of the normal temperature clear water（20℃）
△Hs=suction pipeline loss, calculated according to the practical situation.
[NPSH]=（NPSH） c+0.3（m）
[NPSH]permitted cavitation capacity . [NPSH]c the temperature cavitation capa -city which is set according to the performance parameter.
