The enter shaft is related to the motor and pump wheel, and the output shaft is linked to the working unit and the turbine.
fluid coupling
Hydraulic coupling character is equivalent to a mix of the two, centrifugal pump and turbine factors limited minute type coupler integrate pump wheel and turbine, input and output shaft, shell and auxiliary place, safety overload protection device (fusible plug, consist of specific explosion-evidence explosion-proof plug), and many other individuals.
Short clarification for the pump wheel is hydraulic coupling in electrical 
vitality is reworked to mechanical electrical power (enter) liquid kinetic electrical power of the elements, the turbine is the coupling of the fluid kinetic toughness is remodeled to mechanical electricity output factors.
What is a coupler pump wheel and what is a coupler turbine?
What is the difference in between pump 
wheel and turbine in a hydraulic coupler?
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