single sleeve valve
... shape factor 外形因子 single sleeve valve 单套阀 shakedown run 试车,调动开始工作,试运转 ...
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单向阀阀套 one-way valve sleeve ; way valve sleeve
保温夹套单座调节阀 HCU
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大气量时应用偏心气锚安装气举阀与地面单流阀两步卸气，实现了下部产层和油套环空自动卸气。
Ortherwise, the eccentric gas anchor, gas lift valve and surface check valve are installed to automatically unload the gas from the deeper layer and annulus between the tubing and the casing.
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