Keystone Figure 638 Series E/Series 2 Slurry Valves

Keystone Figure 638 Series E/Series 2 Slurry Valves

Any questions?

Fredrik Ekeroth
Solution Seller
Phone. +46 54-57 92 06

Fredrik.Ekeroth@askalon.se

Fredrik Malmström
Solution Seller
Phone. +46 40-33 02 33

Fredrik.Malmstrom@askalon.se

Johan Riedenlow
Account Manager
Phone. +46 40-33 02 30

Johan.Riedenlow@askalon.se

Patrik Andreasson
Account Manager
Mob. +46 72 222 76 31

Patrik.Andreasson@askalon.se

Anders Praem
Inside Sales Engineer
Phone. +45 2137 7759

Anders.Praem@askalon.dk

Kenn Gerwien
Account Manager
Phone. +45 2346 5513

Kenn.Gerwien@askalon.dk

Slawka Pedersen
Inside Sales Manager
Phone. +45 2137 7702

Slawka.Pedersen@askalon.dk

Jani Collan
Key Account Manager
Mob. +358 40 702 8711

Jani.Collan@askalon.fi

Tommi Penttilä
Sales Manager Conventional Power
Phone. +358 207 416 208
Mob. +358 40 512 2308

Tommi.Penttila@askalon.fi

Questions about the product?

Fill out the form below and we will contact you with answers to your questions






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

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.