... ball-and-rollerbearing滚珠-滚柱轴承 ball-and-seat单流阀 ball-and-socketbearing球窝轴承 ...
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定压单流阀 constant pressure check valve
单向节流阀 one-way restrictive valve ; one-way throttle valve ; return orifice check valve ; one way restrictor
双单向节流阀 Double throttle check valve ; Valve ; Doublethrottlecheckvalve
叠加式单向节流阀 stacked unidirectional throttle valve ; MT ; stacked double directional throttle valve ; ModularThrottleAnd check valve
单流提阀式蒸汽机 Skinner engine
系列单向节流阀 KLA ; KLJA-S
油流单向阀 oil flow check valve
逆流单向阀 reverse flow check valve
量孔节流单向阀 orifice check valve
本控制阀包括油嘴和单流阀，单流阀包括阀球和阀座。
The control valve comprises an oil nozzle and a check valve. The check valve comprises a valve ball and a valve seat.
型管柱中的生产堵塞器具有单流阀作用，可方便进行反循环洗井；
The procreative blanking plug of the "Y type" pipe string has check valve function and it can conveniently for reverse circulation well cleanup.
对损坏的单流阀能进行及时的检查、更换，对油井防倒灌效果明显。
A damaged check valve can be immediately checked and replaced, thereby achieving obvious result in preventing the liquid from returning into the oil Wells.
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