氣動高溫三通調節閥

氣動高溫三通調節閥，是由多彈簧氣動薄膜執行機構和采用圓筒型薄壁窗口形閥芯的三通合流（分流）閥組成。
具有結構簡單、重量輕、動作靈敏、流量特性精確，配用電-氣閥門定位或氣動閥門定位器，可實現對工藝管路流體介質的自動調節控制，廣泛應用于精確控氣體、液體、蒸汽等介質的工藝參數如壓力、流量、溫度、液位等參數保持在給定值。適合于把一種流體通過三通閥分成二路流出或把兩種流體經三通閥合并成一種流體的工況。
結構特點
1．氣動高溫三通調節閥是自動化控制系統中儀表的執行單元，采用電-氣閥門定位器，以電信號和壓縮空氣為動力，接受控制系統輸入的0-10mA •DC或4-20mA •DC電流信號，由調節器將壓縮空氣，轉換成氣源壓力信號輸入輸出，可實現分程控制（段幅信號），從而改變閥芯開度位移，達到對流體介質的工藝參數精確調節控制
2．按作用模式可分；正作用：氣閉式（當信號壓力增大時閥位向下位移），《B型》
反作用：氣開式（當信號壓力增大時閥位向上位移），《K型》
3．三通調節閥閥芯結構為圓筒型薄壁窗口形閥芯，采用閥芯側面導向與閥座內表面導向和上襯套導向，因此導向面積大，工作可靠。流體對閥芯作用方向都處于流開狀態，故閥工作性能穩定。
4．有三通合流式調節閥（把兩種流體經三通閥混合成一種流體）和三通分流式調節閥（把一種流體經三通閥分成兩路流出）兩種形式。當公稱通徑DN≤80mm和壓差較小的場合時，分流閥可以采用同口徑的合流閥代替。流量特性有直線性、拋物線性兩種。
5．它可以代替二臺同時使用的二通調節閥，起分流或合流作用及兩相調節配比作用。
本系列產品廣泛應用于化工、石油、冶金、電站、輕紡、造紙和制藥等工業生產過程的自動化調節和遠程控制。
產品壓力等級有PN1.6 4.0 6.4MPa；公稱通徑DN25~300mm；適用流體溫度有-40~+450℃；按溫度高低配用不同閥蓋可分常溫型、

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