This was a cool project, which the Summit team was fortunate to work on.
You’re looking at Qty 90 x Della Foglia ball valves (6”, ASME 900, API 6D) w/ Rotork actuators and Topworx limit switches.
These assemblies were provided to a client with a state-of-the-art SAGD (Steam Assisted Gravity Drainage) facility in the Oil Sands. The valves are designed for an automated ‘on/off’ wellhead switching service. The media is an oil and water emulsion with steam.