How to choose the type of pressure reducer for special gases

Update:05-12-2019
Summary:

  First, choose the type of pressure reducer accor […]

 

First, choose the type of pressure reducer according to the application. Generally divided into three categories: pressure reducers for gas cylinders, pressure reducers for piping and pressure reducers for gas cylinder assembly devices. The difference between the three is that the pressure reducer for gas cylinders is directly connected to the gas cylinder for pressure reduction adjustment. The pressure reducer for piping is used to adjust the pressure of the pipeline air supply system, and the inlet pressure is generally low. The gas cylinder assembly device pressure reducer is used for the cylinder pressure regulation of the central gas supply device.

Second, depending on the gas used, the type of gas to be depressurized is selected. Determine the GENTEC pressure reducer gas class code (X, Y, F, IN, Q, H, C) according to the gas used. Because the pressure reducer fully considers the effect of gas on the material during the design process, if it is not selected properly, it will directly affect the product's performance, life, and even cause serious consequences. Therefore, the choice of pressure reducer must be based on the applicable gas. It is strictly forbidden to substitute or mix them. For example, when using a pressure reducer with grease on an oxygen device, it may explode.

Thirdly, according to the user's demand for the output pressure of the pressure reducer, the pressure output code of the pressure reducer is determined. The output pressure of the selected pressure reducer is higher than the use pressure. Generally, it is more suitable to use when the output pressure of the pressure reducer is 1.2 to 1.5 times the use pressure.

Finally, according to the user's demand for the output of the pressure reducer, the serial number of the pressure reducer is selected. It should be noted that the size of the pressure reducer flow parameter is closely related to the size of the pressure reducer structure. Generally, the output flow of the pressure reducer is proportional to the size of the structure. When the installation conditions allow, choose a pressure reducer with a larger structure as much as possible, because at the same flow rate, a pressure reducer with a large structure has better output voltage stabilization performance.

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