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International control valve technology to the present, its structure, materials technology has been very mature in 900X Emergency Shut-off valves this respect almost no significant progress, so control valve toward the development of side Where?

国际上调节阀技术发展到现在，其结构、材料等技术已经非常成熟，在这方面几乎没有很大的进展，于是调节阀的发展方朝向何处？

Valves to have aluminum bronze disc and molded in or cartridge seat of EPDM rubber.

阀门配置铝青铜阀瓣和三元乙丙橡胶的模压式或卡盘式阀座。

Velan is now quoting aluminum bronze butterfly valves for sea water applications.

Velan现在正在为海水应用环境所需的铝青铜蝶阀提供报价。

Solenoid valves rated to operate at 70% of nominal amperage to assure Continuous Duty, wide Voltage operating range.

电磁阀额定的70％，经营名义安培，以确保持续的义务，宽电压工作范围。

In order to reduce dimensional size, the ZS2 valves have discarded the installation angle bar and the three feet on the inlet and outlet valve bodies are used for installation

为减小体积尺寸，ZS2系列多路换向阀取消了安装角铁，利用进、回油阀体上的三个底脚直接安装。

MSS SP-85 Covers Cast Iron Globe and Angle Valves, Flanged and Threaded Ends.

MSS SP-85包括铸铁截止阀和角阀，法兰连接和螺纹连接。

Thus, it has wide technological applications in many fields, such as cutting tools, antifriction bearings, turbocharger rotors, engine valves and electronic device.

与传统块体材料相比，纳米材料具有特殊的物理和化学性能并在许多领域展示出潜在的重要应用前景。

Pressure Vessel's appurtenance and accessories: bursting discs, or safety valves, liquid level gages.

压力容器：爆破片或安全阀、液位计等。

All sorts of specialized valves, flame arrestor and other accessories used for acetylene especially

乙炔专用的各类阀门、阻火器等配件；——各种气体充装汇流排。

Check valves are automatic, mainly for one-way flow of media channels, only to allow media to flow in one direction in order to prevent accidents.

止回阀属于自动阀类，主要用于介质单向流动的管道上，只允许介质向一个方向流动，以防止发生事故。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐