I. Basic Performance of Oxygen Pressure Reducing Valve (1) Pressure Regulating Range It refers to the adjustable range of the oxygen pressure reducing valve output pressure P2. Within this range, the required accuracy is required. The pressure regulation range is mainly related to the stiffness of the pressure regulating spring.
(2) Pressure characteristics It refers to the characteristic that the output pressure fluctuates due to input pressure fluctuation when the flow g is constant. The smaller the output pressure fluctuations, the better the relief valve characteristics. The output pressure must be lower than the input pressure - the set value does not change substantially with the input pressure.
(3) Flow characteristics It refers to the input pressure-timing, and the output pressure changes with the change of output flow g. When the flow g changes, the smaller the output pressure change, the better. The lower the general output pressure, the smaller it will fluctuate with the change in output flow.
Second, the role of oxygen relief valve The role of oxygen relief valve is to rely on the internal flow of the valve to reduce the local resistance of gas pressure, the range of pressure drop from the valve connected to the valve or the piston on both sides of the gas pressure difference between the automatic adjustment . Each spring of the oxygen relief valve is only suitable for a certain outlet pressure range, and the spring should be replaced if it is out of range. For ease of operation, adjustment, and maintenance, oxygen relief valves should generally be installed on horizontal pipes.
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