Audco Cast Carbon Steel Gate Valve – Class 300, ASTM A216 Gr. WCB with 13% Cr SS Trim (SS 410/Trim 8), IBR Approved (Cat. 133-8/IBR, 163-8/IBR, LG3F-8, LG6F-8)
Looking for a high-pressure, reliable gate valve for steam, oil, gas, petrochemical, or boiler applications? The Audco L&T Gate Valves in Class 300 series, including models 133-8/IBR (LG3F-8), 133-811BR, 163-8/IBR (LG6F-8), and 163-8/IBR/GU, are engineered for superior performance in demanding industrial environments. Manufactured by L&T Valves (formerly Audco), these cast carbon steel gate valves feature a robust ASTM A216 Gr. WCB body and premium 13% Chromium Stainless Steel internals (SS 410 / Trim 8) for excellent corrosion resistance, erosion control, and long service life. Fully IBR approved with Form III-C certification, they are essential for high-pressure steam and boiler systems in India.
Key Features of Audco Class 300 Gate Valves (133-8 & 163-8 Series)
- Body Material: Cast Carbon Steel ASTM A216 Gr. WCB – High strength and toughness for temperatures up to 425°C.
- Trim: 13% Cr SS (AISI 410 / Trim 8) – Often with hard-faced (Stellite 6) seats for enhanced wear resistance and bubble-tight shut-off.
- Design Standard: API 600 compliant, Bolted Bonnet, Outside Screw & Yoke (OS&Y), Flexible Wedge.
- Pressure Rating: ASME/ANSI Class 300 (PN50) – Ideal for medium to high-pressure applications.
- End Connection: Raised Face Flanged (RF) as per ASME B16.5 (variants like GU may include gear operation).
- IBR Certification: Approved under Indian Boiler Regulations – Mandatory for steam lines and boiler installations.
- Operation: Handwheel (standard for smaller sizes); Gear operated (GU) for larger sizes or easier torque management.
- Sizes Available: 50mm to 600mm (2″ to 24″) – Model-specific variations (e.g., 133-8 up to certain sizes, 163-8 for higher classes/sizes).
These cast steel gate valves deliver low torque operation, minimal pressure drop, and exceptional durability in refineries, power plants, and chemical processing.
Why Choose Audco Class 300 WCB Gate Valve with 13% Cr SS Trim?
- Enhanced Durability: 13% Cr stainless steel trim (SS 410) resists cavitation, erosion, and corrosion in aggressive media like steam and hydrocarbons.
- IBR Compliance: Supplied with Form III-C certification for safe, legal use in Indian boiler and high-temperature applications.
- Reliable Sealing: Flexible wedge design compensates for thermal expansion, ensuring tight shut-off and reduced maintenance.
- Versatile Performance: Suitable for isolation in pipelines handling water, oil, gas, steam, and petrochemical fluids.
- Trusted Heritage: Valves (Audco legacy) is globally recognized for quality, with approvals from major EPCs and oil & gas companies.
Technical Specifications Table
| Parameter | Details |
|---|---|
| Model Codes | 133-8/IBR, 133-811BR LG3F-8, 163-8/IBR LG6F-8, 163-8/IBR/GU |
| Body Material | ASTM A216 Gr. WCB |
| Wedge/Trim | 13% Cr SS (AISI 410 / Trim 8) |
| Seat Facing | Integral/Hard-Faced (Stellite 6 optional) |
| Pressure Class | ANSI 300# (PN50) |
| End Connection | Flanged RF (ASME B16.5) |
| Face to Face | ASME B16.10 |
| Testing | API 598 / BS EN 12266-1 |
| Temperature Range | -29°C to +425°C |
| Certification | IBR Form III-C |
Applications of Audco Class 300 Cast Steel Gate Valves
- Power Plants & Boilers (IBR required)
- Oil & Gas Transmission Pipelines
- Refineries & Petrochemical Industries
- High-Pressure Steam Systems
- General Industrial Isolation Services
Choose the best Class 300 cast carbon steel gate valve with 13% Cr SS internals (SS 410) for unmatched reliability and safety. Contact us for quotes, availability, sizes, and customized options on Audco IBR approved gate valves today.
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