ZMAP氣動低溫調節(jié)閥-永嘉銳博閥門有限公司

ZMAP氣動低溫調節(jié)閥概述：
氣動薄膜低溫調節(jié)閥是單、雙座調節(jié)閥的變形產品。它與常溫調節(jié)閥不同之處在于采用長頸型上閥蓋，使填料處于常溫下工作。適用于-60～-250℃低溫壯態(tài)下的介質（如液氧、液氮等）的調節(jié)。為確保調節(jié)精度，必須配用閥門定位器。
結構原理
　　氣動低溫調節(jié)閥由氣動薄膜執(zhí)行機構和耐低溫的單、雙座閥兩部分組成。
由調節(jié)器來的信號壓力輸入氣動薄膜執(zhí)行機構的氣室，產生推力，通過
連接桿件帶動閥芯，閥芯位置的變化使閥的流通截面積變化，實現對介質
流量的調節(jié)。

ZMAP?氣動低溫調節(jié)閥主要技術指標：

ZMAP?氣動低溫調節(jié)閥安裝、使用注意事項：
１、應垂直安裝于水平管道上，在特殊情況下需要水平或傾斜安裝時，一般應加支撐。裝于保溫箱壁的園板與保溫箱壁應平行。
2、應安裝在靠近地面或樓板的地方，以便在于維護檢修，對裝有閥門定位器或手輪機構者，更應保證觀察，調整和操作和方便。
3、一般都設置旁通管路，以便在自控系統(tǒng)發(fā)生故障或維修調節(jié)閥時切換到手動操作，不致于停止生產。
4、裝有手輪機構時，也可省略旁通管路時行手動操作，還可用于限制閥門的開度。當停止使用時，手輪機構必須恢復到原來空檔位置，以利自控系統(tǒng)正常進行。
5、安裝時，應使介質流向與閥體指示方向*。
6、調節(jié)閥在安裝前應對管路清洗污物、焊渣。安裝后，使調節(jié)閥全開，對管路，閥門等進行清洗及試驗各連接處的密封性。

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