DN250 PN16 CF8 stainless steel flanged trunnion mounted ball valve (bare stem) for large bore pipeline projects - BALLSEAL
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DN250 PN16 CF8 Stainless Steel Trunnion Ball Valve (Bare Stem) – Ready for Automation

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This high-capacity DN250 (10 Inch) Trunnion Mounted Ball Valve (Bare Stem) is precision-cast from premium CF8 (304) Stainless Steel. Featuring a robust support base for heavy-duty installation and a standard ISO 5211 mounting pad, this bare shaft valve is purpose-built for large-scale automated pipeline projects. The fixed trunnion design ensures low operating torque and bubble-tight reliability under severe pressure, making it the premier choice for pneumatic or electric actuation in petrochemical and municipal water infrastructure.

🏭 Engineering & Compliance Highlights:

  • Standard Compliance: Designed and manufactured in strict accordance with API 6D, ASME B16.34, and DIN EN 1983.
  • Automation Ready: Integrated bare stem with ISO 5211 pad enables effortless, direct-mount actuator integration.
  • Structural Advantage: Bottom trunnion plate guarantees stable, low-torque operation in 10″ high-flow pipelines.
  • Material Quality: High-grade CF8 (ASTM A351) stainless steel for maximum corrosion resistance.
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Valve Type Large Bore Trunnion Ball Valve (Bare Stem)
Pressure Rating PN16 / 1.6 MPa (ASME Class 150 Available)
Body Material CF8 (304 Stainless Steel)
Connection Flanged (RF) to EN 1092-1 / ASME B16.5

Main Dimensions (DN250 Trunnion Series)

The table below reflects standard PN16 dimensions. As a source manufacturer, we fully support customized manufacturing to ASME B16.34 (Class 150/300) for international pipeline projects.

DN (mm) Size (Inch) L (Face-to-Face/mm)
150 6″ 394
200 8″ 457
250 10″ 533
300 12″ 610
400 16″ 762

Project Support: We specialize in large-diameter valve solutions for infrastructure projects. API 6D certified manufacturing, complete MTC (Material Test Certificate), and hydro-test reports are provided prior to shipment to meet stringent project specifications.

⚡ Turnkey Automation Solutions Available

While displayed in a bare stem configuration to highlight our precision casting and ISO 5211 mounting pads, we offer complete, fully assembled automated valve packages. Based on your pipeline control requirements, we can equip this valve with:

  • Pneumatic Actuators (Double Acting or Spring Return)
  • Electric Actuators (On/Off or Modulating control)
  • Hydraulic & Electro-Hydraulic Operators for severe heavy-duty torque
  • Accessories: Solenoid valves, limit switch boxes, smart positioners, and air filter regulators.

Send us your technical parameters for a complete automated assembly quote.

🌐 Global Standards & Manufacturing Flexibility:

As a dedicated source manufacturer, we offer full engineering and production customization to meet your regional project specifications. All our valve series can be customized and manufactured in strict accordance with the following international standards:

  • American Standards: ASME B16.34, API 6D, API 607 (Fire-Safe), Flanges to ASME B16.5 (RF/RTJ Finish).
  • European Standards: DIN EN 1983, EN 1092-1, Face-to-Face to EN 558 (PN10, PN16, PN40, PN63).
  • Material Traceability: Available in ASTM/ASME grades (WCB, LCB, CF8, CF8M, Duplex, Titanium) and equivalent international designations.

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