對焊式電站閘閥簡介：

   焊接閘閥的啟閉件是塞形的閥瓣，密封面呈平面或錐面，閥瓣沿流體的中心線作直線運動。閥桿的運動形式，有升降桿式（閥桿升降，手輪不升降），也有升降旋轉(zhuǎn)桿式（手輪與閥桿一起旋轉(zhuǎn)升降，螺母設(shè)在閥體上）。紋管截止閥只適用于全開和全關(guān)，不允許作調(diào)節(jié)和節(jié)流。

對焊式電站閘閥優(yōu)點：

結(jié)構(gòu)簡單，制造和維修比較方便。

工作行程小，啟閉時間短。

密封性好，密封面間摩擦力小，壽命較長。

結(jié)構(gòu)簡單，制造和維修比較方便。

工作行程小，啟閉時間短。

密封性好，密封面間摩擦力小，壽命較長。

對焊式電站閘閥缺點：

流體阻力大，開啟和關(guān)閉時所需力較大。

不適用于帶顆粒、粘度較大、易結(jié)焦的介質(zhì)。

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