Zero friction track butterfly valve

零摩擦軌道蝶閥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、核心技術(shù)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
‌寬溫域與耐壓性‌

適用溫度范圍擴展至-204℃~815℃，覆蓋液化天然氣至高溫?zé)煔夤�況‌。
公稱壓力最高6.4MPa，殼體強度試驗壓力達(dá)公稱壓力的1.5倍‌。
三、典型應(yīng)用場景
‌應(yīng)用領(lǐng)域‌ ‌介質(zhì)類型‌ ‌典型工況‌
能源電力 蒸汽/煤氣 高溫?zé)煔夤艿溃ā?00℃）‌
石油化工 原油/航空煤油 高壓輸送（PN6.4MPa）‌
超低溫工程 LNG液態(tài)天然氣 -196℃深冷環(huán)境‌
環(huán)保系統(tǒng) 含塵氣體 除塵風(fēng)機管道調(diào)節(jié)‌
四、選型關(guān)鍵參數(shù)
‌通徑范圍‌：DN50~DN2000（大口徑優(yōu)先選軌道式）‌
‌驅(qū)動方式‌：手動/電動/氣動/液動（氣動響應(yīng)最快）‌
‌密封類型‌：
‌金屬硬密封‌：高溫高壓工況（＞300℃或PN＞2.5MPa）‌
‌軟密封復(fù)合層‌：常溫潔凈介質(zhì)（成本低，密封性優(yōu)）
該閥門通過結(jié)構(gòu)創(chuàng)新解決了傳統(tǒng)蝶閥密封面磨損痛點，已成為苛刻工況下替代閘閥/截止閥的戰(zhàn)略產(chǎn)品‌。