Filtration Group: Filtering for a Better World
In 2009, Madison set out to build a filtration business with an unparalleled array of products and customer-centric solutions to meet some of the most demanding applications. Over the following years, Filtration Group grew into one of the largest, independent pure-play filtration companies in the world.
Filtration Group provides mission-critical filtration solutions designed to enable advanced healthcare capabilities, provide clean air, and drive productivity. Partnering with a diverse set of customers across life sciences, indoor air quality and industrial applications, its solutions support critical medical and pharmaceutical capabilities, cleaner air, and greater consumer and industrial productivity.
Under Madison’s ownership, Filtration Group grew to over $2 billion in revenue, built on a strong track record of unlocking value through strategic acquisitions and serving customers from 145 locations in 27 countries.
That growth story caught the attention of Parker-Hannifin Corporation, a Fortune 250 global leader in motion and control technologies. In August 2026, Parker-Hannifin acquired Filtration Group for $9.25 billion, creating one of the largest global industrial filtration businesses in the world. Along with the May 2026 sale of Facet Filtration to Donaldson, the total enterprise value of Filtration Group grew to over $10 billion under Madison’s ownership.
Filtration Group’s journey is a testament to Madison’s approach: invest in the best people, technologies and strategies to build truly unique organizations that deliver outstanding customer value and, when the time is right, find them the partner best-positioned to carry that mission forward.