Rotork CVA electric control valve actuators are being installed during an upgrade programme on the pipeline network connecting Russia and Central Asia with Western Europe. Ukraine is an important part of this energy supply infrastructure which, in total, meets one third of Western Europe's demand for natural gas.

The Ukranian energy company Ukrgaz Energo has made it a priority to modernise the network in its country, which handles approximately 90% of the gas supplied by Gazprom in Russia. In a recently completed project, twenty-eight Rotork CVA modulating electric valve actuators were installed on the compressor station at Bilche-Volytsa, replacing obsolete pneumatic equipment.

Rotork’s exclusive agent in Ukraine, ITO Ltd, supplied a package consisting of CVA (CVL linear output) actuators and new globe valves to improve diethylenglycol (DEG) control on the station’s dehumidification unit. Assembly, test and calibration of the actuators and valves was performed by ITO at their factory. CVA actuators deliver continuous, repeatable modulating control with a programmable fail to position option. Resolution, repeatability and hysteresis performance is quoted at less than 0.1% of full scale, offering suitability for the most demanding control valve applications.

The all-electric Rotork CVA actuator features advanced and user friendly non-intrusive programming and commissioning technologies, combined with comprehensive integral data logging, diagnostic and asset management capabilities. A rugged, double-sealed IP68 watertight and explosionproof enclosure enhances long term maintenance-free reliability in the harshest of environments.

The customer is very happy with the move to Rotork electric control valve actuation. In particular, the diagnostic capabilities, accuracy and reliability of the CVA “have exceeded all expectations”.