Bahnson, Inc.

Parker Hannifin Corporation, headquartered in Cleveland, Ohio, is the world's leading diversified manufacturer of motion and control technologies and systems. Parker Bioscience Filtration division specializes in designing, supplying, and delivering systems for upstream and downstream pharmaceutical and biopharmaceutical manufacturing. They operate ISO Class 7 cleanroom facilities at their Birtley, UK site and US facilities for manufacturing single-use assemblies used in biopharmaceutical manufacturing. Their HVAC Filtration includes AIRGUARD, ATI, and Purolator brands offering complete line of HVAC filter products from pre-filters to HEPA/ULPA and cleanroom filtration. The Parker Filtration Innovation Center houses 82,000 sq ft dedicated to filtration R&D. In November 2025, Parker announced acquisition of Filtration Group Corporation for $9.25 billion.