jacket valve
...rol valve 输入调节阀 introduction valve 注射阀; 进样阀 内瓣 internally piloted valve 内控阀; 自控阀 jacket valve 套层阀 level control valve 水位调节阀 ..
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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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