End-suction centrifugal pump is a non-self-priming, single-pole single-suction, pump body and base fixed, its maximum working flow can reach 1200 cubic meters per hour, so this series of pumps fully meet the needs of fire water supply, can improve its extinguishing speed. The mechanical seal of this series adopts the standard wear-resistant mechanical seal, and the bearing adopts the bearing frame, which can locate the bearing, avoid the serial movement of the bearing, and at the same time improve the rigidity of the rotor parts, so this series of pumps use The lifespan will also be longer. At the same time, this series of water pumps also have the functions of stable operation, convenient maintenance and low operating noise, so this series of water pumps is the first of the fire system equipment.