The ZX series self-priming pump according to the relevant technical information at home and abroad by the absorption, digestion, developed from the improved energy-saving pump products. The pump is self priming centrifugal pumps, it has a compact structure, convenient operation, stable running, easy maintenance, high efficiency, long life, The ZX series self-priming pump according to the relevant technical information at home and abroad by the absorption, digestion, developed from improved energy-saving pumps produced Products. ZX series self-priming pump is a self-priming centrifugal, it has a compact, easy to operate and run a smooth pipe without having to install the end of the valve before work just security, easy maintenance, high efficiency, long life and Self-priming pump has a strong self-priming ability. Pipeline without having to install the end of the valve before work only to ensure that the pump body priming fluid can be. Thus simplifying the The pipeline system and to improve labor conditions.