Cleveland-based Parker Hannifin Corp. named Peter Popoff as president of the company’s Filtration Group and an officer of the company. Popoff replaces John Oelslager who retired March 31, after more than 41 years of dedicated service to Parker.

Charlotte, N.C.-based APV named Charles Ruben to the position of global plate heat exchangers sales director.

Lou Zavala was hired by Lake Zurich, Ill.-based Frigel as a national sales manager. Zavala will be responsible for the North American sales representative network and advancing industry awareness of Frigel’s technology.

Acme Cryogenics Inc., Allentown, Pa., hired Edward Haberern as key account manager. Haberern has been in the high-purity chemical and gas component industry for the past 21 years and was most recently employed by Fab Operations Services, a division of Applied Materials, as an account manager.