Regulator «STAR»

A New Principle of Flow Regulation

The regulator operates on the basis of the optimal geometry of the flow passage. The flow does not change its direction at any point within the control zone.
Symmetrical narrowing of the passage toward the center eliminates the main problems of conventional regulators — turbulence, flow instability, and pressure loss.

A cross-sectional diagram of the movable and fixed throttling elements (TE):
a) — fully open;
b) — change of the flow passage.
During operation, the flow narrows symmetrically toward the center without creating vortices or directional changes. The absence of obstructions in the center of the flow passage ensures smooth regulation and stable medium movement.

The cross-section shows that the flow passage area remains constant throughout the entire flow path (example: D = 200 mm).

Symmetrical narrowing of the passage toward the center solves all major flow-control problems found in existing equipment on the market:
 •  flow capacity — up to 99% of the pipeline’s potential; the “smooth pipe” principle is implemented for the first time in a regulator;
 •  absolute axisymmetric flow throughout the entire control range;
 •  no changes in flow direction whatsoever;
 •  preservation of the gas kinetic energy provided by compression systems or by pressure at storage and production points (reservoir pressure);
 •  a design-integrated capability of achieving positioning accuracy up to 0.25%.
As a result — a multiple reduction in costs associated with compensating regulation-related losses.