Rotork IQ electric valve actuators with Pakscan two-wire digital control have been utilized in the aircraft hydrant refuelling plant for the Muscat International Airport in Oman. By reducing aircraft “turnaround time” these systems assist the proper regulation of airport traffic, as planes are not kept waiting for refuelling on the tarmac. Rotork’s actuation technology helps to increase the integrity of the refuelling process. At Muscat the IQ actuators will control fifty double block and bleed valves to facilitate swift refuelling of aircraft on the airport’s apron pad. By eliminating the need for fuel tankers the system makes a significant contribution to strict airport security. Rotork’s Pakscan digital control network will enable the actuators to be comprehensively monitored and controlled from centralised control areas. Pakscan is specifically designed to cope with the long distances between the control room and field units that characterise typical valve actuation installations, with no loss of communication performance and without the need for repeaters on the network.