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Shematic of conventional hydraulic BOP<br />
<strong>control</strong> (KOOMEY)<br />
System pressure is 20,7 MPa and is visible on the pressure gauge (3).<br />
Such pressure is reduced for ram preventers over the reducing and<br />
regulating valve (4) and read on the pressure gauge (5), and for annular<br />
preventers over the reducing and regulating valve (6) and read on the<br />
pressure gauge (7).<br />
Preventer closing is regulated over the valve (8).
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