Keystone Figure 638 F638 Series E/Series 2 Slurry Valves

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

Specs

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 maximizes 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.