A device used to connect the pump to the driver. It transmits torque and compensates for axial growth, but cannot compensate for radial misalignment between the pump and driver.

The pump should be leveled and aligned at operating temperature before the coupling is installed.

Some coupling literature makes statements about the coupling’s ability to take a certain amount of misalignment.

Remember that the literature is referring to the coupling, not the pump.


  • On February 15, 2018