Engineered for demanding industrial environments, the Class 600LB ASME High-Pressure Flanged API 600 Gate Valve delivers uncompromising safety and reliable flow isolation.
Manufactured strictly in accordance with ASME (American Society of Mechanical Engineers) and API 600 standards, this valve is specifically designed to withstand severe pressure conditions up to Class 600LB (PN100). It features a robust bolted bonnet construction and an Outside Screw and Yoke (OS&Y) rising stem design, allowing operators to visually verify the valve's open or clsed status. Equipped with standard flanged connections (ASME B16.5) and a full port design, this high-pressure gate valve ensures minimal pressure drop, smooth flow characteristics, and seamless integration into critical oil, gas, and petrochemical piping systems.
Key Features & Benefits
• ASME & API 600 Compliance: Designed and manufactured strictly to ASME B16.34 and API 600 standards, ensuring dimensional compatibility, structural safety, and reliable performance in global high-pressure infrastructure.
• High-Pressure Class 600 Rating: Engineered to safely handle extreme internal pressures up to Class 600LB, making it ideal for high-pressure steam, oil, and gas transmission lines.
• Heavy-Duty Cast Steel Body: Crafted from premium cast steel (e.g., WCB, WC6), offering excellent mechanical strength, impact resistance, and durability under severe pressure and thermal cycling.
• OS&Y Rising Stem Mechanism: Features an Outside Screw and Yoke design with a non-rotating rising stem, providing a clear visual indication of valve position and protecting stem threads from corrosive media exposure.
• Flanged End Connections: Compliant with ASME B16.5 standards, ensuring easy installation, secure sealing (RF or RTJ), and leak-proof performance in high-pressure piping systems.
• Stellite Hard-Faced Trim: Seat rings and wedge seating surfaces are overlaid with Stellite 6 (Co-Cr-W alloy) to resist severe erosion, corrosion, and galling in high-pressure fluid flows.
Technical Specifications
Parameter | Specification |
Valve Type | High-Pressure Flanged Gate Valve |
Design Standard | API 600, ASME B16.34 |
Body Material | Cast Steel (ASTM A216 WCB, A217 WC6/WC9, etc.) |
End Connection | Flanged (RF/RTJ) per ASME B16.5 |
Pressure Rating | Class 600LB (PN100) |
Size Range | 2" to 24" (DN50 - DN600) |
Temperature Range | -29°C to +425°C (WCB) / +593°C (WC9) |
Trim Material | 13% Cr, Stainless Steel, or Stellite Hard-Faced |
Operation | Manual Handwheel / Gear Operator |
Testing & Inspection | API 598 |
Applications
This high-performance ASME Class 600 flanged gate valve is widely deployed in:
• Oil & Gas Pipelines: High-pressure transmission, gathering, and processing lines requiring reliable isolation.
• Petrochemical Plants: Critical high-pressure fluid isolation and distribution systems.
• Power Generation: High-pressure steam, feedwater, and utility piping networks.
• Refineries: High-pressure crude oil and hot product processing lines.
• Heavy Industrial Boilers: High-pressure steam generation and distribution systems.
FAQ
Q: What does ASME mean in valve specifications?
A: ASME stands for the American Society of Mechanical Engineers. In the valve industry, ASME standards (such as ASME B16.34 for pressure-temperature ratings and ASME B16.5 for flanges) are the primary benchmarks for designing, manufacturing, and testing high-pressure valves for global markets.
Q: What is the maximum working pressure of a Class 600LB valve?
A: A Class 600LB valve is designed to handle a maximum working pressure of approximately 10.0 MPa (1450 psi) at room temperature. The actual working pressure may vary depending on the operating temperature and the specific material grade used.
Q: Why choose an API 600 bolted bonnet design for high-pressure applications?
A: The API 600 bolted bonnet design provides a highly secure, leak-tight seal between the valve body and the bonnet. It is engineered to withstand severe internal pressures and thermal cycling, while also allowing for easy disassembly and maintenance of internal trim components.
