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Selection principle of plug valve | 4 way plug valve

  • Selection principle of plug valve | 4 way plug valve

    4 way plug valve
    According to the structural characteristics of the plug valve and the functions that can be achieved in the design, it is recommended to select according to the following principles:
    1) It is used to distribute the medium and change the flow direction of the medium. Its working temperature is less than or equal to 300℃, the nominal pressure is less than or equal to PN16, and the nominal size is less than or equal to DN300. It is recommended to use a multi-channel plug valve.
    2) For the equipment and pipelines of raw milk, juice, beer and other food enterprises, it is recommended to use austenitic stainless steel tight-fitting conical plug valves.
    3) Oil-sealed conical plug valves are recommended for oil-sealed conical plug valves in the branch pipes, refining and cleaning equipment for oil field exploitation, natural gas field exploitation, and pipeline transportation, where the nominal pressure level is less than or equal to CL300, the nominal size is less than or equal to DN300, and the working temperature is less than or equal to 340°C.
    4) In the branch pipes, refining and cleaning equipment of oil field exploitation, natural gas field exploitation, pipeline transportation, the nominal pressure level ≤ CL2500, the nominal size ≤ DN900, and the working temperature ≤ 340 ℃, it is recommended to use the pressure-balanced inverted conical plug valve.
    5) In the large-scale chemical industry, where the pipelines and equipment containing corrosive medium are required to be opened or closed quickly, for the medium based on nitric acid, a 12Cr18Ni9 stainless steel PTFE sleeve can be used to seal Conical plug valve; for acetic acid-based media, 06Cr17Ni12Mo2 stainless steel PTFE sleeve sealed conical plug valve can be used.
    6) In the pipelines and equipment of gas, natural gas and HVAC systems, when the nominal pressure is less than or equal to PN10 and the nominal size is less than or equal to DN200, the packing type conical plug valve should be selected.
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