Horizontal Multistage Pump

Horizontal Multistage Pump are a multistage type of pumps, constructed in series. They are installed on submersible motors, therefore, they are also referred to as submersible units. The pumping unit is installed vertically, with a submersible motor located at the bottom and the deep-well impeller pump. The suction casing, protected with a sieve filter, is installed straight on the motor.

The specific pump stages are installed after the suction casing. Each of them comprises the casing and the stator fitted in it, and an impeller (radial or diagonal type). The pump is closed with the non-return valve housing and the discharge casing to connect the pump unit to the discharge pipe using either flanges or a threaded connection. A coupling is provided to connect the rotating parts of the pump and the motor shaft . Distance sleeves are provided to correctly position the impeller in the stator and pump casing.