Rotork CVA Selected For Demanding Control Valve Duty

The Rotork CVA control valve actuator installation at the power station.

The Rotork CVA control valve actuator installation at the power station.

A power station in New Hampshire which burns both natural gas and low sulphur fuel oil has installed a Rotork CVA electric control valve actuator to help reduce maintenance costs and improve accuracy in a demanding outdoor fuel oil control application.

The 6inch Class 150 ball valve controls the flow from a storage tank to fuel oil pumps. The changing load on the units demands virtually continuous modulation to maintain the correct flow. It was decided to replace the existing pneumatic I/P positioner and spring diaphragm pneumatic actuator with the CVA electric actuator because it provides extremely precise control valve operation with repeatability and resolution performance at less than 0.1% of full scale.

In addition to the convenience of all electric control and operation, the CVA uses wireless Bluetooth communication technology for swift and user-friendly actuator set-up, auto calibration and adjustment. Further benefits include comprehensive performance data-logging, a double-sealed IP68 watertight enclosure for environmental protection and programmable fail-to-position options using integral super-capacitors. On-site technicians carried out extensive tests on the fail-to-position feature and verified correct performance in both loss-of-power and loss-of-signal situations.

The CVA data-logger stores operational data such as valve torque profiles, events and statistics that can be downloaded for detailed analysis using Rotork Enlight software. By anticipating potential problems, preventative maintenance can be planned without interruption to the operation of the plant.

Rotork Controls Ltd
Tel: 01225 733200
Website: www.rotork.com


Published: 7th July 2011

Comment by BVAA Director Rob Bartlett

‘The best BVAA Team you’ve ever had.’   This was the ...

Share on Twitter Share on LinkedIn Read full article

New BVAA Website is Now Live!

The BVAA’s new website is now live, with new and improved ...

Share on Twitter Share on LinkedIn Read full article

Annual Spring Conference and Golf Day

This popular event is an excellent opportunity to network with fellow BVAA ...

Share on Twitter Share on LinkedIn Read full article

Future Leaders Programme Hits a Six!

It’s not quite cricket season yet, but BVAA recently picked its twelve ...

Share on Twitter Share on LinkedIn Read full article

Oxford Flow launch new liquid and gas regulator size calculators

Oxford Flow have launched new sizing calculators for their range of gas and ...

Share on Twitter Share on LinkedIn Read full article

Alleviating Control Valve Erosion Crucial to Power Plant Uptime

Ongoing process steam leakage in power plant control valves due to erosion from ...

Share on Twitter Share on LinkedIn Read full article

Self-Cleaning Technology Key to Addressing Control Valve Failure

Self-cleaning metamorphic trim products stand to alleviate expensive control ...

Share on Twitter Share on LinkedIn Read full article

Score announces expansion plans with new UK facility

Score Europe Limited is delighted to announce it is expanding with the launch ...

Share on Twitter Share on LinkedIn Read full article