valve oil-can

基本解釋

If the 450-ton valve at the wellhead can be turned on, the oil flow should stop, and the spill could be ended quickly.
如果井口450噸重的閥門(mén)可以可以關(guān)上，油流就可以停止，那么溢油很快就可以停下來(lái)。
However, the need for oil flow in hydraulic circuit reverse flows can use hydraulic control, opening a one-way valve, so that the flow of oil can flow in both directions.
但在液壓回路中需要油流反向流動(dòng)時(shí)又可利用控制油壓，打開(kāi)單向閥，使油流在兩個(gè)方向都可流動(dòng)。
The utility model can prevent the discharge-orifice steel columns of the upper draining valve cover from cracking, increase the service life of oil-well pumps, and lower oil-production cost.
本實(shí)用新型可防止抽油泵在采油過(guò)程中上排出閥罩出油孔筋柱裂斷，提高抽油泵的使用壽命，降低采油成本。
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