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General Requirements 1.1 Valve specifications and categories shall comply with the requirements of the pipeline design documents. 1.2 The model of the valve shall be indicated with the national standard number requirements. If it is a corporate standard, the relevant description of the model should be indicated. 1.3 The working pressure of the valve is required to be ≥ the working pressure of the pipeline. Without affecting the price, t···
There may be two reasons why the solenoid valve cannot be closedFirst, physical obstacles, such as some gravel, dead leaves, and branches, prevent the complete sealing of the membrane. After removing these obstacles, it is necessary to check whether the membrane and accessories are damaged.The second is that the pressure acting on the upper diaphragm is too small, which may be due to the following reasons:
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