BSO Ballseal factory production line featuring a heavy-duty 12-inch Class 300 WCB cast steel flanged gate valve.

12″ Class 300 WCB Cast Steel Gate Valve, Flanged RF, API 600

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Engineered for unrestricted flow and minimal pressure drop, this large-diameter 12-Inch (DN300) Class 300 Gate Valve is manufactured from heavy-wall ASTM A216 WCB Cast Carbon Steel. Designed with a robust bolted bonnet (BB), an outside screw and yoke (OS&Y) rising stem, and a flexible wedge, it ensures absolute structural integrity and reliable isolation in high-pressure pipelines. Strictly conforming to the API 600 standard, it is the premier choice for demanding oil & gas, petrochemical, and power generation networks.

🏭 Engineering Highlights:

  • Design Standard: Fully compliant with API 600 and ASME B16.34.
  • Body Material: ASTM A216 WCB (High-strength cast carbon steel).
  • Wedge Type: Flexible wedge design to compensate for seat deformation and prevent binding at high temperatures.
  • Connection: Raised Face (RF) Flanged ends to ASME B16.5.
Category:
Valve Type Cast Steel Gate Valve (Flanged Ends)
Design Standard API 600 / ASME B16.34
Body Material ASTM A216 WCB (Cast Carbon Steel)
Seat / Trim 13% Cr / Stellite #6 (API Trim 8 / Trim 5 available)

Main Dimensions (Class 300 WCB Series)

Size (Inch) DN (mm) L (Face to Face/mm) Flange OD (D/mm) Height (Open/mm)
2″ 50 216 165 415
3″ 80 282 210 510
4″ 100 305 254 600
6″ 150 403 318 820
8″ 200 419 381 1050
10″ 250 457 445 1280
12″ 300 502 521 1510

🌐 Global Standards & Custom Manufacturing

Beyond standard API 600 / ASME B16.34 specifications, our cast steel valve division is fully equipped to manufacture according to DIN, JIS, and GOST standards. We offer comprehensive OEM services, including custom face-to-face dimensions, specialized trim materials (e.g., Monel, Hastelloy), bypass valve configurations, and NACE MR0175 compliance for sour gas environments.

⚡ Automation & Gear Operation Ready

While this large-diameter 12-inch model can be supplied with a standard handwheel, we highly recommend and can configure it with a bevel gear operator to reduce operational torque. Furthermore, it can be engineered with an ISO 5210 top flange for seamless integration with automation systems:

  • Bevel Gear Operators: Enclosed gearboxes for effortless manual operation on large sizes and high pressure drops.
  • Electric Actuators: Multi-turn smart electric actuators (AUMA, Rotork equivalent) for precise remote isolation and integration into plant DCS.
  • Pneumatic Actuators: Heavy-duty linear pneumatic cylinders for rapid fail-safe shutdown requirements.

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