Zero friction track butterfly valve

零摩擦轨道蝶阀is an industrial valve that uses a special mechanical structure to achieve frictionless contact on the sealing surface. Its core technology and performance characteristics are as follows:

一、核心技术原理1、 Core technical principles
Orbital drive structure
By controlling the movement of the valve disc through a dovetail guide or spiral guide mechanism, the butterfly plate is radially offset along the valve axis during the initial opening and closing stages, and is detached from the sealing surface of the valve seat; Close the end stage and then axially compress the sealing pair to achieve zero friction contact throughout the entire process.
A typical design includes a combination of wedge-shaped valve core and sliding valve disc, with a linear motion trajectory embedded in the 90 ° rotary drive, significantly reducing sealing surface wear.
Triple eccentric sealing technology
The zero friction track butterfly valve has a triple eccentric design for the valve shaft position (the valve shaft deviates from the centerline of the pipeline, the valve plate shaft is positioned backwards, and the valve seat cone shaft is offset), which allows the butterfly plate to completely separate from the valve seat at the moment of opening, eliminating frictional resistance.
The metal sealing pair adopts multi-layer stainless steel or hard alloy, supporting zero leakage sealing under high temperature and high pressure conditions.
2、 Core performance advantages
Zero friction and long lifespan
The butterfly plate and valve seat have no mechanical scratching during the switching process, and the opening and closing times can reach more than 100000 times, with a sealing surface wear of less than 0.05mm.
Compared to traditional butterfly valves, the lifespan is increased by 3-5 times, making it particularly suitable for frequent opening and closing scenarios.
Bidirectional zero leakage seal
The hard sealed structure has passed the API 598 standard test, with a sealing test pressure of 1.1 times the nominal pressure (such as a 2.5MPa valve test pressure of 2.8MPa).
Fire protection design maintains sealing integrity even in the event of a high-temperature fire.
Wide temperature range and pressure resistance
‌宽温域与耐压性‌

适用温度范围扩展至-204℃~815℃，覆盖液化天然气至高温烟气工况‌。
公称压力最高6.4MPa，壳体强度试验压力达公称压力的1.5倍‌。
三、典型应用场景
‌应用领域‌ ‌介质类型‌ ‌典型工况‌
能源电力 蒸汽/煤气 高温烟气管道（≤300℃）‌
石油化工 原油/航空煤油 高压输送（PN6.4MPa）‌
超低温工程 LNG液态天然气 -196℃深冷环境‌
环保系统 含尘气体 除尘风机管道调节‌
四、选型关键参数
‌通径范围‌：DN50~DN2000（大口径优先选轨道式）‌
‌驱动方式‌：手动/电动/气动/液动（气动响应最快）‌
‌密封类型‌：
‌金属硬密封‌：高温高压工况（＞300℃或PN＞2.5MPa）‌
‌软密封复合层‌：常温洁净介质（成本低，密封性优）
该阀门通过结构创新解决了传统蝶阀密封面磨损痛点，已成为苛刻工况下替代闸阀/截止阀的战略产品‌。