Is the purpose of pneumatic multi-level butterfly valve wired? The special valve for liquefied gas must be able to "identify" steam and condensed water, so that it can act as a butterfly valve to block steam and drain water. The "identification" of steam and condensed water is based on three principles: density difference, temperature difference and phase change. Therefore, three types of special valves for liquefied gas are manufactured according to the three principles, which are classified as mechanical type, thermal static type and thermal dynamic type.
、 As long as the equipment made of metal materials is used for a certain period of time, a large amount of materials will be worn, or even corroded by air, or the particularity of materials will also cause corrosion of metal equipment in production and use. Of course, it also depends on the equipment used to better determine the way of prevention. For example, for pneumatic butterfly valves made of metal materials, the prevention methods used here are different, especially for parts such as valves.
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