原文：
多层次金属硬密封蝶阀是通用软密封蝶阀向中压中高温领域的廷伸和发展，它除保留原有蝶阀具有的结构紧凑，体积小，重量轻，操作方便，性能可靠，维修简单外，还具有抗老化，抗辐照，经久耐用，寿命长，耐温耐高压，应用范围广等特点。广泛应用于热力管道，锅炉辅机系统，石油化工和冶金行业中，用来切断和调节各种非腐蚀性和腐蚀性介质。 1、产品采用独特的三偏心结构设计，不仅结合了双偏心结构的优点，同时还具备角偏心的优异性能。 2、阀杆轴心线与阀体中心线的偏心量很小， 使蝶阀外型美观，便于安装，同时减小流阻，提高流通能力， 起到节能效果。 3、密封圈采用多层次复合材料制造，具有硬度高，耐腐蚀强，弹性好，密封性能可靠，10万次开关无泄漏的优异特点.

“ Use of metal seal butterfly valve ”是由提供的阀门新闻，译文仅供参考。另外，中国蝶阀网还提供相关产品搜索： 、 、 、 、 、 等。

译文：
Multi-level metal seal butterfly valve is a common soft-sealed butterfly valve to the pressure in high temperature areas and development of the extensions, which, while retaining the original butterfly with a compact structure, small size, light weight, easy to operate, reliable performance, simple maintenance , it also has anti-aging, anti-radiation, durable, long life, temperature-resistant high-pressure, wide application and so on. Widely used in heat pipes, boiler auxiliary systems, petrochemical and metallurgical industries, is used to cut off and adjust the various non-corrosive and corrosive media. 1, the product of three unique eccentric structure design, not only combines the advantages of double eccentric structure, but also with the excellent performance of eccentric angle. 2, the axis line and the valve stem center line of the eccentricity is very small, so butterfly appearance, easy to install, and reduced the flow resistance, increased flow capacity, play an energy-saving effect. 3, ring multi-level composite materials with high hardness, corrosion resistance strength, flexibility, reliable sealing performance, 10 million of the outstanding features of non-leakage switch.