This series of pumps is a single-stage, double suction, horizontal open type centrifugal pump, suitable for pumping clean water and non corrosive liquids. The medium has a high temperature of 80 ℃. After the bearing body is filled with cooling water, it can transport hot water below 130 ℃. Changing the materials of the sealing ring, shaft sleeve, and impeller can transport turbid water containing sediment. Changing the material of pressure bearing parts can increase the inlet pressure of the pump. The shaft seal of the pump is generally sealed with soft packing. If there are special requirements, mechanical seals can also be modified. Looking at the pump from the direction of the motor, it rotates counterclockwise. According to user requirements, it can also be changed to clockwise rotation. According to the regulations of the water pump industry, the Sh and S series of medium open pumps coexist until a new type of pump is uniformly designed to replace these two series. This product is mainly used for water supply, agricultural drainage and irrigation in factories, mines, cities, power stations, pumps for various water conservancy projects, and heating and air conditioning systems.