... .It has many protective system,such as leakage of water and electricity,over load and automation installationdevice.Capacity range ... agriculture,architecture,environment protection andindustry,such as drainage slurry,waste water,dung,which contained long fibre,wastepaper,sand,and soon. ... center of impeller as criterion,the depth of the pump under water must be less than 5 meters,Type (m3/h) ...