Welcome to the Motor-Operated Valve Users’ Group website.



The next MUG Conference is scheduled for January 8 - 10, 2024

Optional Training January 11-12th

Orlando, FL

Log in to the members area for details.




The Motor-Operated Valve Users' Group (MUG)  is a forum of member nuclear utility representatives formed for the exchange of technical information relating to the testing and maintenance of motor-operated valves (MOV) among the utilities and in coordination with other organizations within the nuclear industry for the increased reliability and safety of nuclear power.