SMC直动试精密减压阀AR20-02-M

精密" target="_blank" href="http://baike.sogou.com/lemma/ShowInnerLink.htm?lemmaId=452832&ss_c=ssc.citiao.">减压阀是" target="_blank" href="http://baike.sogou.com/lemma/ShowInnerLink.htm?lemmaId=302962&ss_c=ssc.citiao.">气动调节阀的一个配件，主要作用是将气源的压力减压并稳定到一个定值，以便于" target="_blank" href="http://baike.sogou.com/lemma/ShowInnerLink.htm?lemmaId=303025&ss_c=ssc.citiao.">调节阀能够获得稳定的气" target="_blank" href="http://baike.sogou.com/lemma/ShowInnerLink.htm?lemmaId=137221588&ss_c=ssc.citiao.">源动力用于调节控制。

按结构形式可分为膜片式、弹簧薄膜式、活塞式、杠杆式和" target="_blank" href="http://baike.sogou.com/lemma/ShowInnerLink.htm?lemmaId=472753&ss_c=ssc.citiao.">波纹管式；按阀座数目可人为单座式和双座式；按阀瓣的位置不同可分为正作用式和反作用式

精密减压阀的工作由阀后压力进行控制。当压力感应器检测到阀门压力指示升高时，减压阀阀门开度减小；当检测到减压阀后压力减小，减压阀阀门开度增大，以满足控制要求。

精密减压阀——该阀门的减压比必须在一定程度上高于系统值； 即使在大或者小流量时它也应该能够对正作用或者反作用控制信号做出响应。这些阀门应该针对有用控制范围选择，即大流量的20%到80%。正常为等比型或者具有等比特性。这些类型的阀门本身具有比例控制所要求的佳流量特性及流量范围。

减压阀的种类很多，常见的有：先导" href="http://baike.sogou.com/lemma/ShowInnerLink.htm?lemmaId=7822082" target="_blank">活塞式减压阀、" target="_blank" href="http://baike.sogou.com/lemma/ShowInnerLink.htm?lemmaId=73823691&ss_c=ssc.citiao.">薄膜式减压阀、" target="_blank" href="http://baike.sogou.com/lemma/ShowInnerLink.htm?lemmaId=74481735&ss_c=ssc.citiao.">波纹管式减压阀、" target="_blank" href="http://baike.sogou.com/lemma/ShowInnerLink.htm?lemmaId=10957379&ss_c=ssc.citiao.">比例式减压阀、 " href="http://baike.sogou.com/lemma/ShowInnerLink.htm?lemmaId=60052456" target="_blank">自力式减压阀、直接作用 " href="http://baike.sogou.com/lemma/ShowInnerLink.htm?lemmaId=7822082" target="_blank">活塞式减压阀、" target="_blank" href="http://baike.sogou.com/lemma/ShowInnerLink.htm?lemmaId=513404&ss_c=ssc.citiao.">背压调节阀等等。它们分别适用于不同的工作介质。

不同的形式有不同的具体工作原理。但的原理还是：减压阀是通过启闭件的节流，将进口压力减至某一需要的出口压力，并使出口压力保持稳定。但一般减压阀都要求进出口压差必须≥0.2Mpa。

SMC直动试精密减压阀AR20-02-M

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SMC直动试精密减压阀AR20-02-M