valve oil-can

基本解释

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噸重的閥門可以可以關上，油流就可以停止，那麽溢油很快就可以停下來。
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.
但在液壓廻路中需要油流反曏流動時又可利用控制油壓，打開單曏閥，使油流在兩個方曏都可流動。
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.
本實用新型可防止抽油泵在採油過程中上排出閥罩出油孔筋柱裂斷，提高抽油泵的使用壽命，降低採油成本。
ip.com