译文：
动作特征是指放料阀对于介质参数变化，做出相应反应的敏感程度。 启闭力和启闭力矩是指阀门开启或关闭所必须施加的作用力或力矩。关闭放料阀门时，需要使启闭件与发座两密封面间形成一定的密封比压，同时还要克服阀杆与填 料之间、阀杆与螺母的螺纹之间、阀杆端部支承处及其他磨擦部位的摩擦力，因而必须施加一定的关闭力和关闭力矩，阀门在启闭过程中，所需要的启闭力和启闭力 矩是变化的，其{zd0}值是在关闭的最终瞬时或开启的最初瞬时。设计和制造阀门时应力求降低其关闭力和关闭力矩。 启闭速度是用放料阀门完成一次开启或关闭动作所需的时间来表示。一般对阀门的启闭速度无严格要求，但有些工况对启闭速度有特殊要求，如有的要求迅速开启或关闭，以防发生事故，有的要求缓慢关闭，以防产生水击等，这在选用阀门类型时应加以考虑。

“Characteristics of discharge valve action”是由提供的国际阀门新闻，译文仅供参考。另外，中国调节阀网还提供相关产品搜索：、、、、等。

原文：
Action is characterized by mean discharge valve for the medium parameters change, the sensitivity of the response accordingly. Hoisting force and hoisting moment is to open or close the valve that must be imposed by force or torque. Close discharge valve, the need to open and close with the Coma Berenices two pieces formed between the sealing suce sealing certain specific pressure, while also overcoming the stem and the packing between the stem and the nut thread between the stem end Department and other friction parts bearing friction, and must exert a certain degree of closing force and closing moments, the valve in the open and close the process, the required hoisting hoisting force and torque is the change, Its maximum is in the closed or open end of the initial transient instantaneous. The design and manufacture of valves should be sought to reduce the closing force and closing moments. Hoisting speed is used to complete a discharge valve to open or close the time required to represent the movement. Valves open and close speeds generally no strict requirements, but some conditions the speed of the hoist he special requirements, if any, the prompt to open or closed, to prevent an accident, and some require slow and shut down to prevent the resulting water hammer, etc. , which should be considered in selection of valve type.

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