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Figure 638

  • Manufacturer: EMERSON
  • Valve Type: Butterfly Valves - Rubber Lined / High Performance / Triple Offset
  • Sub-Type: Keystone Butterfly Valves
  • Heavy robust construction.
  • Full repairability with replaceable internals for significantly extending valve life.
  • Extended body for protection of down stream piping.
  • Chrome Iron internals on the Series 2 coated with tungsten carbide.
  • Series 2 features tungsten carbide disc end spacers.
  • Swing through disc for minimal leakage at elevated temperatures.
  • Wing-style disc for optimum flow and wear resistance.
  • Venturi liner for improved flow control and thicker liner for wear resistance.
  • Improved mechanical seal to prevent the ingress of media to the bearing journals.
  • KTFE stem seals for ultimate resistance against caustic and acid applications.


The F638 SE/S2 is an extreme heavy duty slurry control valve, with an extended body style and replaceable body sleeve.• Series E for heavy duty service• Series 2 for arduous duty service • Bauxite slurries • Coal washeries • Tailing dispersal • Cement • Caustic • Sugar industry and tailings • Mud and sand dispersal • Mineral sands


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Butterfly Valve Emerson Keystone Butterfly Valve

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