Flowserve”s Limitorque MX smart electronic valve actuator is designed to provide users with predictable, reliable, and safe operation in rigorous and extreme applications. The actuator includes a patented absolute encoder that does not require battery backup, patented LimiGard circuit protection technology, menus in six languages, and hall-effect devices to eliminate potentially troublesome reed switches. Actuators are available for torques up to 1700 ft-lb (2307 N m) and thrust ratings up to 75,000 lb (333 kN). Enhancements to the MX include a patented absolute encoder with increased span, improved diagnostics capability, and built-in self-test (BIST). The BIST feature is designed into a state-of-the-art controls platform that verifies and validates the integrity of its components, a design that aids companies in meeting the Safety Integrity Level (SIL) requirements of IEC 61508. A new MX feature is MX Quik™, an uninterrupted power transfer option during main power losses. The actuator is configurable for up to one hour of Quik power, which is recharged for the next unforeseen power outage once main power is restored. DeviceNet communication options complement Modbus, Foundation Fieldbus H1, Profibus DP_V1, and Profibus PA. The actuator features an LCD display, which can be rotated 180 degrees. Bluetooth wireless connectivity is optional, offering a range up to 10 meters.