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1·We do not use this valve to control the blowout preventer.

我们不用这个凡尔管制防喷器。

2·This setting was constituted by high-pressure lubricator, blowout preventer, injection oily pump, closed gate valve and conversion tie-in.

本装置由高压防喷管、高压防喷盒、高压注脂泵、高压密闭闸门及转换接头等组成。