氣動(dòng)法蘭球閥發(fā)展演變 :
  氣動(dòng)法蘭球閥是由旋塞閥演變而來。它具有相同的旋轉(zhuǎn)90度動(dòng)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(yīng)該是這樣的，即當(dāng)球旋轉(zhuǎn)90度時(shí)，在進(jìn)、出口處應(yīng)全部呈現(xiàn)球面，從而截?cái)嗔鲃?dòng)。本類閥門在管道中可任意位置安裝。 

氣動(dòng)法蘭球閥工作原理:  
   氣動(dòng)法蘭球閥只需要用氣動(dòng)執(zhí)行器用氣源旋轉(zhuǎn)90度的操作和很小的轉(zhuǎn)動(dòng)力矩就能關(guān)閉嚴(yán)密。*平等的閥體內(nèi)腔為介質(zhì)提供了阻力很小、直通的流道。通常認(rèn)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(shè)計(jì)成使它具有節(jié)流和控制流量之用。球閥的主要特點(diǎn)是本身結(jié)構(gòu)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(zhì)，而且還適用于工作條件惡劣的介質(zhì)，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(dòng)法蘭球閥訂購(gòu)須知:
1、請(qǐng)?jiān)谟嗀洉r(shí)提供詳細(xì)口徑規(guī)格、交貨地地、交貨時(shí)間。
2、根據(jù)管道需要，決定選用往復(fù)式（二位開關(guān)式）或彈簧復(fù)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(jìn)常閉或常開），（2）雙電控電磁閥（開關(guān)式），（3）閥位開關(guān)回訊器，（4）氣源處理三聯(lián)件。特殊使用環(huán)境（易燃易爆場(chǎng)合），何選防爆型。

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