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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.

Keystone

Any questions?

Joonas Jägerroos
Inside Sales Engineer
Mob. 040 610 4439

Tommi Penttilä
Sales Manager Isolation Valves
Phone. 0207 416 208

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.