When the hand wheel rotation through the stem hole lead plane in the middle of the plunger up and down reciprocating movement to complete the valve to open and close the function.

 
  • 當手輪旋轉,通過(guò)閥桿帶動(dòng)柱塞在孔架中間上下往復運動(dòng)來(lái)完成閥門(mén)的開(kāi)啟與關(guān)閉功能。
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