IS series pumps are single-suction, single-stage, cantilever 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). There are two types of pump shaft seals: soft packing seals and mechanical seals.

The ISR hot water pump cools the shaft seal part (using normal temperature water), and the medium it pumps can reach 130°C.

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