... of powerful output, stable function and economy.According to pump style, there are centrifugal water pumps ... efficiency and high lift with outlet size from 1.5’ to 2.5’.Self-priming water pumps which ... light weight, and are easy to operate with outlet size from 1.5’ to 4’, the pumps have got ... room and poor-ventilated place, since exhaust emissions from the engine contain toxic carbon monoxide (CO), which ...