Features
1、High-strength structural materials: The main components such as the valve body, stem, and disc are made of high-performance materials including cast steel, stainless steel, and duplex stainless steel, which can be flexibly selected according to operating conditions. They offer excellent pressure resistance, corrosion resistance, and stress corrosion cracking resistance, making them suitable for severe service conditions in industries such as petroleum, chemical, and marine engineering.
2、Metal hard sealing design: The sealing surfaces are processed using stainless steel with cemented carbide hardfacing or spray coating, forming a high-hardness metal sealing surface that is wear-resistant and erosion-resistant, with a service life far exceeding that of soft-sealing butterfly valves.
3、Multi-Offset Technology: Employs single-offset, double-offset, or triple-offset designs. This allows the disc and seat to separate instantly during valve operation, enabling frictionless opening and closing. Benefits include low operating torque and minimal sealing surface wear.
4、Electric Intelligent Control: Equipped with integrated or split-type electric actuators. Supports 4-20mA analog signals or on/off control for precise flow regulation and remote automated operation.
5、High-Temperature & High-Pressure Suitability: The metal hard-seal construction allows it to withstand higher working temperatures (typically up to 425°C or above) and higher working pressures. Suitable for high-temperature, high-pressure media like steam and thermal oil.
6、Superior Sealing Performance: Leverages the wedge-like compression effect generated by the offset design to achieve tight metal-to-metal contact upon closing. Provides reliable bidirectional sealing, with leakage levels potentially meeting ANSI Class VI.
7、Fire-Safe Design: Some models incorporate fire-safe features. In the event of a fire, the metal sealing pair can maintain a degree of sealing integrity, complying with standards such as API 607.
8、Easy and Economical Maintenance: Features a rational structural design and wear-resistant sealing surfaces, leading to extended maintenance intervals. The electric actuator includes functions like overload protection and signal-loss self-locking, ensuring safe and reliable operation.