High-Performance Triple-Offset Lug Butterfly Valve Featuring Metal Seat Extended Service Life Zero Leakage

High-Performance Triple-Offset Lug Butterfly Valve with Metal Seat

The VESON Triple-Offset High-Performance Lug Butterfly Valve represents the premium tier of butterfly valve technology. The triple-offset design eliminates friction between disc and seat throughout the full stroke, while the metal-to-metal seating delivers zero leakage and fire-safe performance for critical isolation applications in oil and gas, petrochemical, and power generation.

Triple-Offset Explained

Key Features

• Metal-to-Metal Seating: Laminated stainless steel/graphite seat ring provides zero leakage with fire-safe compliance to API 607
• Friction-Free Operation: Triple-offset geometry ensures disc lifts off seat instantly without rubbing, extending seat life to 100,000+ cycles
• High-Temperature Rated: Suitable for temperatures from -196°C (cryogenic) to +800°C with appropriate trim materials
• Bi-Directional Sealing: Full-rated shutoff in both flow directions eliminates installation orientation constraints
• Stellite Hardfacing: Optional Stellite 6 or 21 hardfacing on seat and disc for superior wear resistance in abrasive service

Technical Specifications

Target Applications

• Refinery critical isolation valves
• Petrochemical process shutoff
• Steam and thermal oil systems
• Cryogenic LNG and ethylene service
• Power plant main steam isolation

Each valve undergoes factory hydrostatic, pneumatic, and fire-safe type testing. Full PMI, NDE, and functional test documentation provided.