GRAND TERRACE, CA – Wilden®, part of PSG®, a Dover company and a leader in air-operated double-diaphragm (AODD) pump technology, is celebrating its 60-year anniversary in 2015.

Wilden was founded in 1955 by Jim Wilden when he invented the AODD pump. Since that time, Wilden has been recognized as the global leader in AODD pump technology, providing innovative solutions for a wide range of applications in the energy, chemical, process, and water and wastewater industries. Wilden became part of PSG in 2008 and now spans more than 160 countries with more than 180 distributors worldwide.

In addition to inventing AODD pump technology, other product innovations from Wilden include the invention of the first ball valve pumps, AODD pumps with plastic housings, food-processing pumps with tri-clamp connections, groundable plastic pumps, PTFE diaphragms, TPE Thermoplastic Elastomer diaphragms, lube-free pumps, Equalizer Surge Dampeners, PCM Pump cycle monitors and bolted pumps with flanged connections.

To celebrate 60 years of AODD pump innovation, Wilden hosted a distributor meeting and Hall of Fame Dinner in conjunction with the annual Wilden Golf Tournament. At the event, Wilden provided an overview of the company’s 60-year history while highlighting some of its most significant pump innovations.

For more about the history of Wilden, visit