Pipeline Application - Excess flow control case study

ATI shipped fifteen hydraulic double acting actuators with newly designed control systems on each of the units. A Houston-based valve automation center approached ATI to design a system to actuate and control the valves on a hydrogen pipeline. The control system is designed to sense a change of 7 psi differential pressure in a pipeline operating at 915 psi which would cause the actuator to shut the valve. This is important because such an increase in differential pressure would indicate an increase in flow which may mean a leak downstream. Fast speed and fast response were critical in the design of these units.