Different control valves and rams can close in the well to various degrees (i.e. think of the difference between a sphincter and a guillotine).

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The DOT issued a proposed compliance order directing Exxon to conduct training for supervisors and pipeline control room workers, including on the proper operation of remote control valves.

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He said the Irving, Texas-based company has already altered its training program and procedures on the use of remote-control valves that can be used to shut down pipelines quickly when accidents occur.

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In 1994 it led a movement to do away with proprietary controls that had prevented customers from, say, mixing and matching its controllers with other manufacturers' peripherals, like sensors, monitors and actuators (powered doohickeys that control valves, levers and conveyors).

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The Q4000 will then have control over the valves that connect the choke and kill lines to the well proper.

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It takes fuel cells from Vancouver and fits the auxiliary pumps, valves and control systems needed to make them work in a car.

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The control pod will open the valves that allow the drilling mud to be forced into the well.

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Valves are formed where the control channels cross over the fluid channels.

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One long oblong of speaker-grille, punctuated by a central block that houses the all important valves, as well as a control section underneath.

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