Coupling

Coupling is a mean to axle the engine and pump shaft. Coupling In fact, for fusion centrifugal pumps, fusion centrifugal pumps, close pump, in which the shaft and the engine are defective, is connected by coupling.
In fact, the Coupling moves the rotary motion of the motor into the pump shaft and causes the shaft and propeller to rotate. Before connecting couplings, the pump shaft and motor must be coherent.
Typically coupling does not allow the shafts to be separated during operation, although the Coupling can slip or separate when the torque exceeds a higher value.