ST-5™ Venturi Seat for Flashing Service

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The ST-5 Venturi seat for flashing service promotes controlled expansion of vapor, which reduces the velocity at the valve outlet to acceptable limits, while avoiding turbulent flow.

ST-5 Venturi seats are used exclusively in angle-body valves so the discharge from the trim is directed toward the valve outlet with no change in flow direction.

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Typically, materials used are 400-Series Stainless Steels hardened with CVD-5B, which offer the hardest and best resistance to both the flashing and any abrasives that may be present in the process.

  • For Sigma below 1.0
  • Displaces effects of flashing downstream
  • Tolerant of dirty service
  • Economical and easily replaceable
Base Valve Type

Angle, Custom-Engineered/Specialty

Trim Type

Service

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Sizes (NPS)

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Cv Range

1.5 to 4000

Flow Direction

Flow Over

Pressure Stages

1

Flow Characteristic

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Industries

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