It is an integral entity which is made up of a manual corrugated pipe or sleeve piston pump and a flow controlling valve. It is suitable for liquid suction, pressing and siphoning.
本发明公开一种用于输送液体的手动泵阀管，它是由一个手动波纹管或套筒活塞泵，分别同一个流量控制阀门组合为一体。
The theoretic basis for controlling flow of heating medium by self-operated flow control valve is analyzed, and the structure and operating principle of the valve are studied.
分析了自力式流量控制阀实现控制供热介质流量的理论依据，研究了自力式流量控制阀的结构及工作原理。
A governing valve is the instrument for changing flow resistance and heat transfer flux of hot water, controlling pressure and temperature of heating system.
在热水供暖系统中，调节阀是改变热媒流动阻力、传热量变化及控制系统的调节装置。调节阀的选型、使用涉及多方面知识。
The results indicate that the vortex valve has good property for controlling nozzle mass flow rate.
计算表明，涡流阀有良好的流量调节特性。
Featured by tight shut-off, this kind of control valve is suitable for applications with relatively low differential pressure. It is suitable for controlling medium flow or pressure.
该类型调节阀适用于工况压差较小的场合，关闭严密，适用于对介质流量或者压力的调节。
Featured by tight shut-off, this kind of control valve is suitable for applications with relatively low differential pressure. It is suitable for controlling medium flow or pressure.
该类型调节阀适用于工况压差较小的场合，关闭严密，适用于对介质流量或者压力的调节。
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