| Special Focus VALVES, PUMPS AND TURBOMACHINERY Most HPI facilities are continuous processes; therefore, any problems, disruptions or failures in the fluid flow systems will impact the entire plant's operation and the company's profitability. Considerable effort is directed to the proper design, installation, operation and maintenance of fluid handling systems. This month's Special Focus section investigates the numerous issues around maximizing plant/process unit uptime and reliability, and solutions to maintain and increase efficiency. Photo: Assembling a hot gas expander on the Elliott test floor. Photo courtesy of Elliott Group.