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  • (1) OxygenThe molecular formula of oxygen is O2. It is a strong oxidant and combustion improver. When high-concentration oxygen encounters oil, it will undergo a strong oxidation reaction, generate high temperature, and even burn and explode. Therefore, it is listed as a Class B fire hazardous subst


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  • 1. Working principle of gas cylinder pressure reducing valve:The high pressure chamber of the gas cylinder pressure reducing valve is connected to the cylinder, and the low pressure chamber is a gas outlet and leads to the use system. The indication of the high pressure gauge is the pressure of the


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  • A cylinder is a type of pressure vessel. It is a re-inflatable mobile cylinder containing a compressed gas or high-pressure liquefied gas with a design pressure of 1-300kgf/cm2 and a volume of not more than 1m3. It is a kind of pressure vessel commonly used in civil, public welfare and industrial a


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  • In order to implement the spirit of the internship in the opening ceremony of the opening ceremony of the first China International Import Expo, the Chairman of the Board of Directors of the People’s Republic of China, the State Council’s Customs Tariff Commission, reviewed and approved, and approve


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  • Pay attention to the following items when using the check valve:1) In normal operation, the working pressure of the check valve is lower than the rated working pressure of the check valve; the flow through the check valve should be within the rated flow range allowed by the diameter, and no large pr


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