氣動法蘭球閥發(fā)展演變 :
  氣動法蘭球閥是由旋塞閥演變而來。它具有相同的旋轉90度動作，不同的是旋塞體是球體，有圓形通孔或通道通過其軸線。球面和通道口的比例應該是這樣的，即當球旋轉90度時，在進、出口處應全部呈現(xiàn)球面，從而截斷流動。本類閥門在管道中可任意位置安裝。 

氣動法蘭球閥工作原理:  
   氣動法蘭球閥只需要用氣動執(zhí)行器用氣源旋轉90度的操作和很小的轉動力矩就能關閉嚴密。*平等的閥體內腔為介質提供了阻力很小、直通的流道。通常認為球閥zui適宜直接做開閉使用，但近來的發(fā)展已將球閥設計成使它具有節(jié)流和控制流量之用。球閥的主要特點是本身結構緊湊，易于操作和維修，適用于水、溶劑、酸和天然氣等一般工作介質，而且還適用于工作條件惡劣的介質，如氧氣、過氧化氫、甲烷和乙烯等。球閥閥體可以是整體的，也可以是組合式的。

氣動法蘭球閥訂購須知:
1、請在訂貨時提供詳細口徑規(guī)格、交貨地地、交貨時間。
2、根據管道需要，決定選用往復式（二位開關式）或彈簧復位式（常閉或常開式）。
3、可選配控制附件：（1）單電控電磁閥（斷電進常閉或常開），（2）雙電控電磁閥（開關式），（3）閥位開關回訊器，（4）氣源處理三聯(lián)件。特殊使用環(huán)境（易燃易爆場合），何選防爆型。

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