High Temperature triple-offset butterfly valve has a more complex structure compared to traditional butterfly valves, but it also offers superior performance. The offset of a triple-offset butterfly valve is divided into three levels: axial offset, radial offset, and triple offset. The axial offset refers to the non-coincidence between the valve seat axis and the valve stem axis. The radial offset refers to the non-coincidence between the valve seat center and the disc center. The triple offset means that the valve seat center, disc center, and valve stem center are not on the same straight line. This triple-offset structure ensures better sealing performance between the disc and the valve seat, as well as smoother opening and closing.
High Temperature triple-offset butterfly valve itself has a relatively simple structural design, resulting in a compact footprint, lightweight, and ease of installation and maintenance. Secondly, the valve operates flexibly, opens and closes quickly, and has low fluid resistance, giving it a unique advantage in applications with high medium flow rate requirements. Most importantly, the hard-sealed triple-offset butterfly valve uses metal material for the sealing surface, providing excellent sealing performance and making it suitable for a wide range of working conditions, including high-temperature and high-pressure, as well as low-temperature and low-pressure environments. Additionally, the triple-offset butterfly valve has good corrosion resistance and can be widely used in industries such as petrochemical, metallurgy, power generation, and pharmaceuticals.
Specification
Butterfly valve design according to API609, ASME B16.34
Face to face ASME B16.10/API609
End Flanges ASME B16.5/ASME B16.47
Butt Welding ends ASME B16.25
Inspection and test API 598
Material: CF8M
Size Range: 2″~60″
Pressure Rating: ASME CL, 150, 300, 600
Temperature Range: -196°C~600°C
Performance Advantages:
High-Temperature & High-Pressure Resistance:
The triple-offset high-temperature design ensures that the sealing surface pressure increases proportionally with medium pressure, allowing it to withstand pressure ranges from PN10 to PN160 and temperatures from -196°C to 650°C. It is suitable for high-temperature media such as steam and thermal oil.
Metal seats and hard alloy sealing surfaces (e.g., cobalt-based alloy overlay welding) further enhance corrosion resistance and wear resistance.
Long lifespan & Low Maintenance:
The frictionless sealing design minimizes wear, extending lifespan 3-5 times compared to traditional butterfly valves.
Bi-directional sealing (zero leakage) and self-compensation mechanisms (e.g., spring adjustment) ensure long-term stable operation and reduce maintenance costs.
Low-Torque Operation:
The valve stem torque is directly transmitted to the sealing surface via the disc, enabling lightweight operation and fast opening/closing (full open/close achieved with 70°-90° rotation).
Precise Flow Control:
When opening between 15°-70°, it exhibits an approximately equal percentage characteristic curve, allowing high-precision flow regulation and making it ideal for automated control systems.
