Plasma flow regulator

A plasma flow regulator or an EPS flow regulator or simply flow regulator was a component used to regulate the flow of plasma in the electro-plasma system of a starship or a starbase.

An EPS flow regulator was one of the components in the prototype system for metaphasic shielding, a form of subspace shielding technology based on metaphasic fields, invented by Dr. Reyga, a Ferengi scientist, in 2369. 

The power conduits of the Cardassian-designed starbase Deep Space 9 had one flow regulator per level. Chief Miles O'Brien suggested an automatic realignment of such a regulator as a possible cause of Ensign Aquino's death in 2369. 

In late 2375, the plasma flow regulators of the USS Defiant (2375), formerly the USS Sao Paulo, were recalibrated by O'Brien's engineering team.