Triple Offset Butterfly Valve (TOV)

The triple offset butterfly valve (TOV) is an advanced industrial valve designed for applications requiring zero leakage and high-performance sealing under extreme conditions. Unlike traditional butterfly valves, the TOV features three distinct offsets that eliminate friction between the disc and seat throughout the entire operation cycle.

This innovative design ensures a long service life, reduces maintenance requirements, and provides bubble-tight shut-off even in the most demanding applications.

The triple offset design provides significant advantages over conventional butterfly valves:

• Zero Leakage: Metal-to-metal sealing ensures bubble-tight shut-off in both directions
• Frictionless Operation: Three offsets eliminate contact between disc and seat during operation
• Fire Safe Design: Compliant with API 607/API 6FA fire safety standards
• High Temperature & Pressure Resistance: Suitable for applications up to 1000°F (538°C) and high pressure
• Bidirectional Sealing: Effective sealing in both flow directions
• Long Service Life: Minimal wear and reduced maintenance requirements
• Versatile Applications: Suitable for oil & gas, petrochemical, power generation, and other demanding industries

The triple offset butterfly valve consists of several key components that work together to provide reliable performance in demanding applications:

The triple offset butterfly valve operates on three distinct offset principles:

• First Offset: The shaft is located behind the centerline of the seat, creating a cam action during operation
• Second Offset: The shaft is positioned behind the centerline of the pipe, allowing the disc to move away from the seat
• Third Offset: The seat cone angle is offset from the pipe centerline, enabling metal-to-metal sealing

This combination of offsets ensures that the disc only contacts the seat at the point of full closure, eliminating friction and wear during operation. The result is a valve that maintains its sealing integrity over thousands of cycles with minimal maintenance.

Triple offset butterfly valves are ideal for demanding applications across various industries:

Our triple offset butterfly valves are designed and manufactured in compliance with international standards.