The API600 Flange Bevel Gear Operated Globe Valve is a high-performance industrial valve designed for demanding applications, compliant with API 600 standard (Bolted Bonnet Steel Gate Valves for Petroleum and Natural Gas Industries). It is ideal for industrial systems requiring high-pressure, high-temperature, or large-diameter flow control. Featuring a bevel gear mechanism, it significantly reduces operating torque, making it particularly suitable for large valves where manual operation is challenging.
1. Certifications & Standards
2. Bevel Gear Operating System
3. Key Structural Features
Component | Technical Description |
Body | One-piece cast or forged, Y-pattern design to minimize pressure loss |
Bonnet | Bolted bonnet with spiral-wound graphite gasket |
Stem | Rising stem design, AISI 4140 hard chrome-plated |
Sealing System | Metal hard seal (Stellite) or soft seal (PTFE) options |
Stem Packing | Triple graphite packing rings + lubrication injection system |
1. Basic Parameters
Parameter | Range |
Nominal Diameter | DN50–DN1200 (2"–48") |
Pressure Class | Class 150–2500 |
Temperature Range | -196°C to +593°C |
Leakage Class | API 598 Class IV (metal seat) |
Operation Method | Bevel gear + handwheel (expandable for actuators) |
IV. Typical Applications
· Wellhead equipment: Christmas tree master valves, wing valves
· Pipeline systems: Station isolation valves, pigging valves
· LNG terminals: BOG compressor inlet/outlet valves
· Supercritical units: Boiler feedwater control valves
· Turbine systems: Main steam isolation valves
· Nuclear plants: ASME Section III-certified valves
Ethylene cracking: Quench oil system valves
Ammonia synthesis: High-pressure reactor inlet/outlet valves
PTA plants: Acetic acid medium control valves
1. Manufacturing & Inspection Process
Material Verification: PMI testing + mechanical property tests
Machining Precision: CNC machining (±0.02mm tolerance)
Welding Process: ASME Section IX qualified, 100% RT inspection
Assembly Testing:
Shell test: 1.5x rated pressure
Seat test: API 598 Class IV
Torque test: Records full open/close torque curve
