DePasquali Plumbing Incorporated (DPI) is proud to provide commercial and residential plumbing along with medical gas and industrial piping services for Western Pennsylvania and the entire tri-state area. With a tradition of performance, DPI is home to a group of the most established and experienced plumbers and mechanics in the industry. The goal: an excellent finished product, every time. There is something to be said for a company that maintains positive business to business relationships. DPI produces quality work in a timely manner.