Filtration Solutions Group Acquires Filter Services of Indiana and FSI Filtration

Integrated Water Services Acquires Complete Filtration Resources

May 12, 2026

Environmental Services

Integrated Water Services, Inc. (IWS) acquired Complete Filtration Resources, a process filtration and industrial wastewater solutions provider with deep expertise in the food and beverage dairy sector. The deal closed on May 12, 2026 and expands IWS’s capabilities across process filtration through wastewater treatment, including MBR/aeration technologies and related digital monitoring services.

Parker Hannifin Acquires Filtration Group Corporation for $9.25 Billion

November 11, 2025

Industrial Services

Parker Hannifin signed a definitive agreement to acquire Filtration Group Corporation for $9.25 billion (cash-free, debt-free), expanding its filtration portfolio and strengthening global aftermarket presence. The deal was completed on August 13, 2026. Filtration Group is expected to add roughly $1.8 billion to Parker’s fiscal 2027 sales in the first 10.5 months of ownership.

Rensa Filtration Acquires Air Filtration Co., Inc.

June 19, 2025

Industrial Services

Rensa Filtration, a manufacturer of advanced commercial air filtration systems and a portfolio company of Audax Private Equity, acquired Air Filtration Co. The acquisition expands Rensa’s national growth plan, strengthening its Midwestern footprint and adding Air Filtration Co.’s product and service capabilities.

Rensa Filtration Acquires Air Filtration Co., Inc.

January 27, 2025

Manufacturing

Rensa Filtration, a PE-backed manufacturer and distributor of air filtration products, has acquired Air Filtration Co., Inc., a family-owned maker and distributor of spray booth and industrial air filters with production facilities in Lancaster, California and Corydon, Iowa. The deal expands Rensa's geographic footprint in California and Iowa and adds Air Filtration Co.'s spray booth filtration product line to Rensa's portfolio.

Filtration Group (Madison Industries) Acquires Flow Dry Technology

March 5, 2020

Manufacturing

Filtration Group, a Madison Industries company, acquired Flow Dry Technology, a designer and manufacturer of desiccant bags, value-added assemblies, and moisture-protection solutions. The acquisition marks an exit for Argosy Private Equity, which had owned Flow Dry since 2014; Flow Dry is headquartered in Brookville, Ohio with additional manufacturing facilities in China and Hungary.

Blue Box Acquires Filtration Services Group (FSG)

February 4, 2020

Industrial Services

Blue Box, a Dallas-based building optimization company, has acquired Filtration Services Group (FSG), a filtration process and onsite maintenance provider with offices in Michigan, Oklahoma, Tennessee and Missouri. The acquisition expands Blue Box's capabilities by combining its BioEnzyme HVAC optimization technology with FSG's filtration products and maintenance programs to deliver broader air-quality and carbon-reduction solutions for industrial and commercial customers.