The enter shaft is joined to the motor and pump wheel, and the output shaft is linked to the working device and the turbine.
fluid coupling
Hydraulic coupling character is equivalent to a mixture of each, centrifugal pump and turbine parts constrained instant assortment coupler incorporate pump wheel 
Quick clarification for the pump wheel is hydraulic coupling in electrical power is transformed to mechanical vitality (enter) liquid kinetic toughness of the components, the turbine is the coupling of the fluid kinetic energy is converted 
What is a coupler pump wheel and what is a coupler turbine?
What is the large difference among pump wheel and turbine in a hydraulic coupler?
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China fluid coupling
The difference in between pump wheel and turbine in hydraulic coupler
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