B. overfall valve, reductor valve for ensuring stable system pressure.

溢流阀，减压阀，以保证系统的稳定压力。

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This paper introduces the structure, work laws and process of overfall valve and rotate speed control valve in a lately devel oped cleaner.

介绍新研制的一种新型清洗机所采用的调压溢流阀和转速调节阀结构、原理及工作过程。

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