Gas pressure regulator

A pressure regulator, gas pressure reducer is a type of control valve, an automatically operating autonomous device that serves to maintain a constant gas pressure in the pipeline. When regulating the pressure, the initial high pressure decreases to the final low. This is achieved by automatically changing the degree of opening of the throttling body of the regulator, as a result of which the hydraulic resistance to the passing gas flow automatically changes.

Depending on the maintained pressure (the location of the controlled point in the gas pipeline), pressure regulators are divided into regulators "before themselves" and "after themselves". In hydraulic fracturing, only regulators are used "after themselves". According to the principle of operation, regulators are divided into direct-flow and combined.