A nitrogen pressure reducer is a specialized device that automatically reduces the working pressure of pipelines. It uses the opening of the opening and closing parts in the control valve body to regulate the flow rate of the medium, reducing the pressure of the medium. At the same time, it uses the effect of the pressure behind the valve to adjust the opening of the opening and closing parts, keeping the pressure behind the valve within a certain range. Its characteristic is to maintain the outlet pressure value within a certain range while the inlet pressure is constantly changing