Rotork has introduced a new version of its IQT intelligent electric actuator, developed specifically to meet the extreme demands of naval marine applications. Designated IQT-N, the actuator provides direct-drive operation of quarter-turn valves. Expressly designed for the modern warship environment, the IQT-N has been independently tested for shock tolerance to meet the requirements of most worldwide surface ship applications. The overall size of the actuator has been reduced in comparison to its non-naval counterpart to account for shipboard space constraints. Available for three-phase, single-phase or DC power supplies the IQT-N embodies the same features as the standard IQT. Actuator setting and configuration is performed non-intrusively using a hand-held setting tool and two-way infra-red link. The integral data logger keeps a historical record of operating activity, including valve operating torque curves, which can be downloaded and analysed on a PC using Rotork IQ-Insight software to plan for maintenance or diagnose potential operating issues. The same software enables all set-up and configuration information to be reviewed, re-configured and then uploaded back into the actuator. Specifiable for isolating or modulating valve duties, the IQT-N is built with IP68 dust tight, watertight and temporarily submersible (7m depth for 72hrs) protection. In addition to quarter-turn valves and dampers, special versions are also available for full-turn and multi-port applications. Other options include a failsafe battery back-up system and fire protection exceeding ANSI/API607 and UL1709 (1093C/2000F for 30min).