API 16A Bolted Cover Annular Type Blowout Preventer for Wellhead Drilling The blowout preventer is designed with hydraulic opening and closing of the gate, and can easily and quickly replace the gate. The closing pressure provided by the control system is used to close the blowout preventer gate and can also be used to open the end cap. When used to open the end cap, the closing pressure of the control system causes the gate to close. After removing the end cap bolts, use the
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