Keystone Figure 638 F638 Series E/Series 2

Keystone Figure 638 F638 Series E/Series 2

Keystone™ F638 SE/S2 is an extreme heavy duty slurry control valve, with an extended body style and replaceable body sleeve.

Any questions?

Anders Praem
Inside Sales Engineer
Phone. 2137 7759

Anders.Praem@askalon.dk

Kenn Gerwien
Area Account Manager
Phone. 2346 5513

Kenn.Gerwien@askalon.dk

Slawka Pedersen
Inside Sales Manager
Phone. 2137 7702

Slawka.Pedersen@askalon.dk

Certifications PED
End Connection Wafer
Application Metals Processing, Hard Surface, Dirty Service, Erosive, Control
Body Design Long Pattern
Material Carbon Steel
Operating Temperature Less Than 200 C
Pressure Class ASME
Process Connection Type CL150RF, CL300RF, CL600RF
Seat/Seal Type Metal
Standards ASME B16.34
Valve Size NPS 10 / DN 250, NPS 12 / DN 300, NPS 14 / DN 350, NPS 16 / DN 400, NPS 18 / DN 450, NPS 2 / DN 50, NPS 1-1/2 / DN 40, NPS 2-1/2 / DN 65, NPS 20 / DN 500, NPS 8 / DN 200, NPS 6 / DN 150, NPS 3 / DN 80, NPS 24 / DN 600, NPS 4 / DN 100
Valve Size Standard DN
Valve Type Butterfly
Media Solid
Stem Adjustable packing
  • 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.
  • Superior multiple stem seals.
  • Standardized mounting and drive adaptor connection allowing direct mounting of Keystone actuators and also allows for in-line actuator removal.

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