Control-Valve Actuators Provide Precise Operation
New Rotork all-electric, non-intrusive CVA control-valve actuators are said to provide precise operation with repeatability and resolution performance at <0.1% of full scale, advanced HMI capabilities, fail-to-position protection, and significant energy savings.
The actuators are available in linear and quarter-turn actions and are suitable for a wide range of control-valve applications throughout the plant. The new, all-electric actuators eliminate the need for costly air supplies and are easily integrated into most process control environments, including those that use Hart and Foundation Fieldbus protocols, according to the company.
All Rotork CVA actuators incorporate a data logger, which provides a record of such operational and maintenance-related data as valve torque profiles, dwell times, and relevant statistical information.