The Petroleum Equipment Institute is a trade association whose members manufacture, distribute and service petroleum marketing and liquid-handling equipment.
Founded in 1951, PEI represents more than 1,600 member companies located in all 50 states and more than 80 countries. Members include manufacturers, sellers and installers of equipment used in service stations, terminals, bulk plants, fuel, oil and gasoline delivery, and similar petroleum marketing operations.
The Petroleum Equipment Institute is located in Tulsa, Oklahoma, and is a not-for-profit corporation. Office hours are Monday through Friday from 8:30 a.m. to 5:00 p.m., Central Standard Time.