CVA electric control valve actuators in refinery automation project

Case Study by Rotork: Rotork’s latest electric control valve actuation technology has been selected for the automation of metering pumps in Group 2C hazardous areas in an automation project at an oil refinery in India.

Sixteen CVA (model number CVL500) linear actuators with IECEx international explosionproof certification have been ordered to control metering pump valve positions by means of a 4-20 milliamp signal and provide remote status indication. The actuators are also equipped with hand drive mechanisms to enable manual operation of the valves.

The innovative CVA is engineered to deliver high precision valve positioning and facilitate the tightest possible tolerances on the process variable in order to optimise process quality and output. On loss of mains power, built-in super capacitors enable the CVA to move the valve to a desired position, programmable as open, close, any intermediate position or stay-put.

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