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Well control equipment

Well control equipment

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The pressure of<br />

hydraulic fluid<br />

introduced under the<br />

piston (A) produces<br />

lifting power that<br />

raises the operating<br />

cylinder.<br />

The tapered bowl of<br />

operating cylinder<br />

compresses the<br />

packing element to<br />

make the annular<br />

shutoff.<br />

A

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