Generally speaking, the fire pump compared with the ordinary centrifugal pump, the pump body is more reasonable in structure, performance parameter and more applicable, start a more sensitive, more reliable. The difference between the two is as follows: 1) using a special hydraulic design and pump structural design model design and manufacture, the fire pump with flow, pressure profile than the ordinary centrifugal water pump is more suitable for firefighting water supply system is chosen, the flow rate and pressure (Q ～ P) characteristic curve is smooth and no hump, can satisfy the engineering of fire water supply system in the actual use conditions. 2) caused by the rotation of the friction parts for all of the components of the fire pump wear-resistant, corrosion-resistant, resistant to (NIE) of the materials with high reliability.(such as fasteners can not be produced by vibration loosening; the pump shaft is made of stainless steel material; water components made of corrosion resistant material etc.) 3) the fire pump high pressure capacity,overloading ability, start a more sensitive. 4) multistage fire pump can be configured with double water outlet. 5) the fire pump and the original motivation for the introduction of direct connection through the national fire products quality supervision and inspection institutions performance testing.