McWane, Inc., of Birmingham, Ala., the parent company of Kennedy Valve, was the subject of a New York Times investigative series last year that focused on the company's high accident rate, and McWane facilities have been the target of ongoing OSHA investigations.
The 45-year-old worker's death is the second in a McWane facility since 2001.
Kennedy Valve manufactures fire hydrants and control valves.