Fisher® NotchFlo™ DST Valve
NotchFlo™ DST valve with 3-, 4-, and 6-stage NotchFlo anti-cavitation severe service valve offers control of high pressure drop liquids (up to 4200 psi) while avoiding the damaging effects of cavitation.
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Typical Application: |
Hydrocarbon: CHPS Sour water letdown, Produced Water Injection, Hot High Pressure Separator Letdown, Cold High Pressure Separator Letdown |
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Power: Boiler Feedpump Recirculation, Condensate Pump Recirculation |
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Long Trim Life—NotchFlo DST control valves feature a protected seat design whereby the shutoff function is separate from the throttling areas of the trim.
Class V Shutoff—Use of hardened metal seats provides tight shutoff to minimize seat erosion.
High Pressure Drops—Rugged cage guiding of the plug, combined with a staged pressure drop, enables the NotchFlo DST control valve to be effective in a wide range of allowable high pressure drop applications. It can be operated by either spring and diaphragm or piston actuators, depending on plug design (balanced or unbalanced) and application requirements.
Sour Service Capability—Materials are available for applications handling sour fluids. All references in this document are for NACE MR0175-2002 unless otherwise noted. Contact your Emerson Process Management sales office for information on NACE MR0175/ISO 15156 and NACE MR0103.
Availability—NotchFlo DST control valves are available in both globe and angle valve body designs. |
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