When Kevin Hostetler took the reins of Rotork, a UK-based company that makes industrial flow-control equipment, he immediately launched a multi-year transformation to help the company benefit from trends transforming the industries it serves. In this episode he talks with Anna Koivuniemi, co-leader of McKinsey’s work on growth strategy, about the progress Rotork has made and the challenges of changing the culture. This is an edited transcript of the discussion.