“节流阀”的英语可以翻译为：throttle，[化] throttle valve，throttling valve ...

近来,可采用在冷却塔的水管系统中设置旁通阀或节流阀.The latter may be used with bypass or throttling valves in the tower water pipework circuit.柔性节流阀结构简单, 压力降小, 动作可靠性高.Flexible throttle simple structure, small pressure drop, high reliability and ...