Mestek Machinery has purchased Illinois-based spiral duct equipment manufacturer ISM Machinery. Terms were not disclosed.

“We are very pleased to welcome Bryan and his excellent products to the Mestek family,” said Mestek Machinery President Bruce Dewey. “ISM and our other spiral-product development will allow us to serve a broader range of our customer’s productivity needs.”

ISM joins Mestek’s other sheet metal fabrication machinery brands, Lion, Engel, Lockformer and Iowa Precision. Bryan Timmerman, formerly president of ISM, has been named principal sales executive and spiral product development manager for the new ISM by Lockformer division.

Timmerman said he was excited about the opportunity to join Mestek.

“The resources and reach of Mestek will create an opportunity for success in the spiral market that I look forward to achieving,” he said.

ISM and Mestek will be exhibiting at the Jan. 28-30 AHR Expo in Dallas. Mestek will highlight its Engel Value2 automated duct line. ISM’s products will include a range of spiral machines and related products.