Pipeline element which narrows down restricts the cross-sectional area of the fluid flow in a pipe (see Fig. 1 and Fig. 2).
It is widely used to control the flowrate through the pipeline.
|  |
| Fig. 1. Flow schematic of a choked flow | Fig. 2. A sample of regulated choke with flanges |
See also
...
Physics / Fluid Dynamics / Pipe Flow Dynamics
Pipeline Engineering / Pipeline
...