Rotork has been awarded a 220 pneumatic actuators order in UAE

Rotork has received an order for 220 pneumatic actuators for the NASR Phase II Full Field Development Project in the UAE, in a project awarded by Hyundai Heavy Industries. The aim of the project is to increase the field’s oil production capacity to 65,000 barrels per day (BPD) from the existing capacity of 22,000 BPD.
This delivery included a custom version of the Rotork’s GP pneumatic actuators, able to satisfy the specification that the maximum actuator output torque at a design pressure of 9.4 bar should not be in excess of 90% of the valves’ maximum allowable stem torque (MAST): Rotork engineers added a second pneumatic cylinder, mounted between the GP scotch yoke centre body and the spring-return cylinder. Both cylinders are pressurised in the same direction at the same time, so one delivers torque for valve movement, satisfying the valve MAST requirement, whilst the other independently applies the torque to compress the spring.
The resulting actuator is the largest GP350 actuator built to-date, with a total length of 8.5 metres and weighing 19 tonnes.