译文：
作为顶装阀门的专家日前又新推出双向流硬碰硬密封旋球阀，该产品是结合球阀的优越密封性能与蝶阀的优势结构性能研发而成的，其既拥有球阀双向密封、可调节、寿命长的实用优势，又具备蝶阀体积小，重量轻的优势，其实质为蝶式结构偏心半球阀。密封原理结合了固定球阀的前端密封与偏心蝶阀的强制密封，从而实现了高低压双向切断。 在密封副的两个密封面上可根据不同的硬度需要，运用太空等离子喷漆、以太激光溅射、真空保护渗复堆焊等先进工艺形成马氏体不锈钢、奥氏体不锈钢、硬质合金、金属陶瓷、人造金刚石等梯度功能材料。能自动对正中心(自适应)，自动越程补偿磨损，自动加以极高密封比压，瞬间关闭、瞬间打开密封副间摩擦，打开时阀芯投影不断内缩并后退，关闭时阀芯投影不断膨胀并前进，结构短，体积小，不管是大口径、特大口径、超大口径的阀门，运输、安装、维护检修都极其方便，运行也非常可靠。该阀使得普通管网特别是水系统管网也能以中低档价格享受火电、燃气等xx系统同等的高性能、高品质的产品。

“ Two-way flow of head-sealed rotary ball valve will cause the pipe network transformation”是由提供的国际阀门新闻，译文仅供参考。另外，中国气动阀门网还提供相关产品搜索：、、、、等。

原文：
As a top-mounted valve experts a few days ago the new bi-directional flow of head-sealed rotary valve, the product is a combination of superior sealing performance with the ball valve butterfly valve structure and properties of the advantages of R & D formed, and its not only has a two-way sealing valve may be regulation, the practical advantages of long life, but also have the butterfly small size, light weight advantages, and its essence as a semi-eccentric butterfly valve structure. Sealing principle, combined with a fixed front-end ball valve sealing and eccentric butterfly valve sealing force, thereby achieving high and low voltage bi-directional cutting. Deputy's two sealed in a sealed surface hardness according to the different needs, the use of space plasma spray paint, Ethernet laser ablation, vacuum infiltration to protect re-surfacing and other advanced technology to form martensitic stainless steel, austenitic stainless steel, alloy , metals ceramics, functionally gradient materials such as synthetic diamond. Automatically on the center of (adaptive), automatic compensation for wear and tear process more automatic than to be a high sealed pressure, instant off, instant open Sealing friction, open continuously spool recessed projector and back off when the spool projection swelling, and move forward, the structure a short, small size, whether it is large diameter, large diameter, large diameter valves, transportation, installation, maintenance overhaul is extremely convenient and very reliable operation. The valve allows ordinary pipe network, especially water system pipe network will also be able to enjoy the middle and low price of thermal power, gas and other high-end system, the same high-performance, high-quality products.