对垂直单管热水供暖系统中几种跨越管—调节阀组合形式的调节性能进行了分析比较，从而得出调节性能最佳的方式。
A few forms of the crossover pipe-adjustment valve combination in vertical single pipe hot water heating system are analysed and compared each other in adjustment performance.
单井流量计量装置是为解决串联油井的单井量油而研究的，该装置由量油器、记录仪表及管阀附件等组成。
The single well flow metering unit, which is made up of oil meter, recorder, accessories such as pipe and valve and so on, was developed for the oil measurement of single well in series oil Wells.
压缩空气或真空服务，纽曼帝克提升阀是为单动气缸，空气波纹管的理想，和真空材料处理应用。更多…
For compressed air or vacuum service, Numatics poppet valves are ideal for use with single acting cylinders, air bellows, and vacuum material handling applications. more…
应用实践表明，两种阀特别是单柱阀，对矿浆或液体流量、 浓度的调控比闸阀、球阀或管夹阀更适用，在选厂磨矿分级作业自动控制中的大量使用已产生了很大效益。
The application practice has shown that both valves, especially the single cylinder one, are more suitable than sluice valve, ball valve or pipe clamp valve in regulating and controlling the…
应用实践表明，两种阀特别是单柱阀，对矿浆或液体流量、 浓度的调控比闸阀、球阀或管夹阀更适用，在选厂磨矿分级作业自动控制中的大量使用已产生了很大效益。
The application practice has shown that both valves, especially the single cylinder one, are more suitable than sluice valve, ball valve or pipe clamp valve in regulating and controlling the…
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