查询词典 ball valve

The assemblies, discussed on the preceding page and seen in the split-view drawing on this page, are to be installed on the supply side of a standard Chemtrol Ball Check Valve, replacing the union nut and end connector.

这种组件，正如上一页所讨论的，以及本页的剖视图内所见，是安装在标准Chemtrol球形止回阀的供应侧上，更换管接头螺母和端口连接件。

Therefore, the union nut on the valve end with "ADJ" marked on the body serves the dual purpose of external adjustment for "squeeze" on the operating envelope within the cartridge, preventing leakage across the ball, as well as compression of the face-seal, preventing shell leakage at the cartridge face.

因此，ADJ字母就标记在这种阀门端口上的管接螺母上，起到在阀腔内的作业范围上进行外部调整&挤压&、防止球体泄漏，以及表面密封压缩、防止阀腔表面外壳泄漏的双重作用。

Based on the practice of the use of φ95mm subsurface sucker rod pump in Shengtuo Oilfield in recent years, the causes of the failure of the pump are analyzed, and relevant precautions are put forward:(1)selecting oil wells with sufficient fluid supply for pumping;(2)under the condition of the pump efficiency being the same, the submergence depth of the pump being somewhat larger than that of the small pump, and 450～500m being feasible;(3)adopting Grade H ultrahigh-strength rod string and fixing a sinker bar at the bottom of the rod string;(4)selecting long stroke and low pumping speed, and more than 5m stroke and less than 6min-1 pumping speed being recommended;(5)adopting zirconium oxide valve ball and seat ＋ spray welded plunger ＋ nitrided barrel.

根据胜坨油田近几年采用φ95mm有杆抽油泵提液的实践，分析了造成这种抽油泵失效的原因，包括与其配套的脱节器失效、抽油杆断脱、泵漏、电动机不配套和生产管理不善等。为增强泵的提液能力和工作可靠性，提出5 项预防措施：(1)选择有充足供液能力的油井；(2)在保持相同泵效的情况下，泵的沉没度应略大于小泵，推荐按450～500m设计；(3)采用H级超高强度抽油杆柱，并在杆柱底部配置一定重量的加重杆；(4)采用长冲程、低冲次的参数匹配，推荐光杆冲程大于5m，冲次小于6min-1；(5)为提高泵筒、活塞和阀座的防腐耐磨性，推荐采用&氧化锆阀球和阀座+喷焊柱塞+氮化泵筒&的结构形式。

Plug valves and ball valves are more applicable to this purpose, therefore, mostly used for the shunt valve is selected in one of these valves.

旋塞阀和球阀较适用于这一目的，因此，大部分用于换向分流的阀门都选取这类阀门中的一种。

Production of "fly ball card" all kinds of high, medium pressure valve is a brand-name products in Sichuan Province.

生产的&飞球牌&各类高、中压阀门属四川省名牌产品。

In Asia, the Middle East, North America, South America, the company's "fly ball card" Valve Products also enjoy very high reputation.

在亚洲、中东、北美、南美，本公司的&飞球牌&阀门产品亦享有极高的商誉。

In Asia, the Middle East, North America, South America, the company's "fly ball card" products also enjoy a very high valve business

在亚洲、中东、北美、南美，本公司的&飞球牌&阀门产品亦享有极高的商

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。