![]() ![]() Possess an HVACR master or master restricted license, have at least two years of gas fitting experience as a journey gas fitter under a master gas fitter, plumber or HVACR master, who is found to be approved, and pass an examination.Have at least four years of experience, and completed an approved training program or.Persons must have a current master gas fitter license from Baltimore County or WSSC or.Person must have completed 32 hours of training in backflow prevention device testing and.Person must have completed 7,500 hours of training under the control and direction of a licensed master plumber and.Person must have held an apprentice license for at least four years and.Person must pass a comprehensive written examination. ![]() Person must have completed 3,750 hours of training under the direction and control of a licensed master plumber and.Person must have held a journey license for at least two years and. ![]()
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