First, the basic performance of the oxygen regulator (1) pressure regulating range It refers to the output pressure of the oxygen regulator P2 adjustable range, within the scope of this requirement to achieve the required accuracy. Regulating the pressure range and the main spring stiffness. (2) Pressure characteristics It refers to the flow rate g is a fixed value, due to input pressure fluctuations caused by the characteristics of the output pressure fluctuations. The smaller the output pressure fluctuation, the better the characteristics of the pressure reducing valve. The output pressure must be lower than the input pressure - the setting will not substantially change with the input pressure. (3) flow characteristics It refers to the input pressure - timing, the output pressure with the output flow g changes in the holding capacity. When the flow rate g changes, the output pressure changes as small as possible. The lower the general output pressure, the smaller it fluctuates as the output flow changes. Second, the role of oxygen regulator The role of oxygen regulator valve is based on the flow of gas within the valve to reduce the local resistance to air pressure, pressure drop range from the diaphragm connected to the valve or both sides of the piston automatically adjust the pressure differential . Oxygen valve every spring only in a certain range of outlet pressure range, beyond the scope of the spring should be replaced. In order to operate, adjust and maintain the convenience, the oxygen pressure relief valve should generally be installed in the horizontal pipeline.