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UPPER KELLY VALVE
During drilling operation,
accidental well blow out can result in the damage and the pollution
of the environment. Upper Kelly Valve is one of the effective tools,
which is used to prevent the well blow out or well kick. It is
combined with other equipments and technology to close the well. So
the workers can prevent from the happening of the accident.
The BOP in the
drilling rig can be divided into three types according to the
position of the channel. They are IBOP, annular rotating BOP and Ram
BOP. This product is a kind of IBOP also called the plug valve or
Kelly Valve.
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51/4"Upper Kelly Valve Major Specification
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External
diameter |
197 mm（7 3/4″) |
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Internal
diameter |
76.2 mm（3″） |
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Rated working
pressure |
35 MPa 、70 MPa、105 MPa
(Optional pressure grade)
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Lowest
working pressure |
1.7 MPa |
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Rated
open-close rotary torque |
55~110Nm |
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Valve rated
working temperature |
20℃~82℃ |
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Valve axis max. pull-resistance load
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4410 kN（450t） |
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Valve
max. torque
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46 kN.m |
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Tie-in screw thread both sides
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6 5/8 REG（optional） |
ISO9001 API Spec7 |
