Greg Duncan is the director of business development for Wilden and PSG. Wilden is a brand of air-operated double-diaphragm (AODD) pumps and is part of PSG, a Dover Company, Oakbrook Terrace, Illinois. PSG is comprised of several pump brands, including Abaque, Almatec, Blackmer, Ebsray, Griswold, Maag Industrial Pumps, Mouvex, Neptune, Quattroflow, RedScrew and Wilden. Duncan may be reached at greg.duncan@psgdover.com or 909-422-1700. For more information, visit wildenpump.com and psgdover.com.