Sealing issues of pumps – the relationship between sealing types and the medium being transported
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Are there any strict requirements regarding the type of seal used in centrifugal pumps and the medium being transported? For example, what type of sealing must be used to transport materials that are extremely or highly hazardous? What type of sealing should be used for transporting Class A and B media? Are there any relevant standards or specifications?
According to API682 selection criteria, there are three main categories: generally, PLAN11, 23, etc. represent single-seal types； The second is volatile light hydrocarbons 52 ； Third, the toxic and harmful substances required under environmental protection standards are classified as level 53.