Choke valves.

Choke valves from N-Line Valves are choke valves in designs such as axial, angle and straight run to regulate flow for upstream oil and gas production.
Control choke valves from N-Line Valves are available in a wide range of materials and designs with sizes from 1 to 36 inches in many pressure classes.
And associated actuators.   N-Line valves also produces special valves for demanding applications such as
subsea.
The choke valves can be used in offshore and onshore production, including injection.   More info: www.n-linevalves.com

Angel choke valve

Axial flow Stepping motor