This series of pumps are single-suction, single-stage, direct-connected centrifugal pumps, with a total of 34 basic types and 242 specifications. It is used to pump clean water or non-corrosive liquids with a maximum medium temperature of 80°C. It is most suitable for occasions with high inlet pressure (such as air conditioning, heating and other closed cycles). The pump shaft seal adopts mechanical seal.

ISWR type hot water pump cools the shaft seal part (using normal temperature water), and the medium pumped can reach 130℃.

The shaft seal of ISWY type clean oil pump can use skeleton oil seal or mechanical seal.