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Thiago Guimarães Machado

Rajeev Rajan Pillai

James Michael Zerkus

Steven Dornell Raymond

A system for operating and/or lubricating a plurality of valves. The system includes at least first and second control units, each of which is associated with a respective valve. Each control unit includes a hydraulic pressure inlet, a hydraulic pressure outlet, a hydraulic pressure line connected between the hydraulic pressure inlet and the hydraulic pressure outlet, and a hydraulic port which is connectable to the valve. The hydraulic pressure inlet of the first control unit is connectable to a hydraulic pressure source and the hydraulic pressure outlet of the first control unit is connectable to the hydraulic pressure inlet of the second control unit. In operation, the control unit is operable to selectively communicate hydraulic pressure from the hydraulic pressure line to the hydraulic port.

Valve control and/or lubrication system

A system for operating and/or lubricating a plurality of valves mounted on a number of christmas trees, each valve including a hydraulic actuator operated by hydraulic pressure from a hydraulic pressure source and a lubricant inlet connected to an interior portion of the valve. The system includes a plurality of control units, each of which is associated with a respective valve and each of which has at least one of a hydraulic pressure line which is connectable to the hydraulic pressure source and a lubricant line which is connectable to the lubricant source. Each control unit is operable to selectively connect the hydraulic pressure source to the hydraulic actuator to thereby operate the valve and/or to selectively connect the lubricant source to the lubricant inlet to thereby communicate lubricant into the interior portion of the valve.

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Houston, TX, United States of America

Thiago Guimarães Machado