ball seat是什么意思

用法例句

Failure analysis of ball valve in reforming catalyst regeneration system;

重整催化剂再生系统球阀的失效分析

Drilling die and clamp design for bonnet of ball valve;

球阀副阀体法兰钻模夹具设计

The clamps formachining body axes bore of ball valve;

球阀阀体轴孔车加工夹具

Analysis and Technical Upgrade on Globe Valve Operating System of Yangshan Hydropower Statioin;

仰山水电站球阀操作系统的分析及技术改造

The assembling, actuating, water-tight test of pump-turbine globe valve and its quality control are introduced.

介绍了抽水蓄能水轮机球阀装配、动作及密封漏水试验工艺性与质量控制。

This paper expoundes the influence of valve well during laying out and the difference of steel globe valve and PE globe valve in technicality and economicality.

就管网施工中影响较大的阀门井问题阐述了PE球阀的使用,并将钢制球阀及PE球阀的技术经济性进行了比较。

A kind of slope slots and embeded plates hoisting expanding type valve sealing mechanism which is suitable for ball valves,butterfly valves and plug valves is introduced.

介绍了一种适用于球阀、蝶阀和旋塞阀的斜槽插板升降撑拢式阀门密封结构。

It s suitable for ball valves,butterfly valves and plug valves and it has gained an invention patent (patent No:ZL00111674.

介绍了一种适用于球阀、蝶阀和旋塞阀的阀杆旋转角度启闭的撑拢式阀门密封结构。

A type of dual slots helix hoisting composite valve switch mechanism which is suitable for ball valves,butterfly valves and plug valves is introduced.

介绍了一种适用于球阀、蝶阀和旋塞阀双轨道旋转和升降复合动作的启闭结构。

Improvement of the pneumatic ball valve of discharge system in LDPE Plant;

低密度聚乙烯装置排料系统气动球阀的改进