Wynnchurch Capital LP, a middle-market private equity firm headquartered in Rosemont, Ill., has acquired a majority ownership in Industrial Service Solutions, from Edgewater Funds and JZ Capital Partners.

Founded in 2011 and headquartered in Houston, Texas, ISS is an industrial maintenance, repair and operations company. ISS is focused on rotating equipment including motors, pumps and valves, along with process equipment and inspection services. The company’s shops are equipped to repair, overhaul and inspect all process and rotating equipment types, brands and applications.

“The management team at ISS has built an excellent foundation within its core markets,” comments J.D. Frank, principal at Wynnchurch. “We are excited to partner with the team and support growth through both organic and inorganic initiatives.”