The company, which is based in Alabama and makes industrial valves, pipes and flanges, pleaded guilty to two counts of falsifying emission test results at Pacific States Cast Iron Pipe Co. facility in Springville, Utah. The court sentenced the company to three years´ probation and ordered it to pay a $3 million fine.

Charles Matlock, a former vice president and general manager of the company, pleaded guilty to one count of rendering a Clean Air Act testing method inaccurate. The court will sentence him May 2.

The court also indicted another employee, vice president of environmental affairs Charles Robison, but dismissed the charges in return for his agreement not to appeal his conviction in another McWane case in Birmingham, Ala.