This model of pump is characterized with high lift, compact size, light weight and convenient use and vastly used in high-position water delivery, flush and place as construction sites. The 3-phase motor pump has a more stable function. The float switch can automatically control on and off with the change of the liquid level. The protector in the motor can automatically cut off the power when it is overheated or overcorrected, thus guarantee the security and reliability of pump’s of pump’s operation even in the atrocious environment.