Limitorque Actuators

Whether you need an actuator with the strength to handle a half million foot-pounds of thrust, or a sophisticated control network to precisely orchestrate hundreds of valves, you’ll find Limitorque products make the task easier. After nearly 70 years’ experience in the field of valve control, Limitorque actuators are at work in more than 100,000 sites around the world, automating valves in some of the harshest conditions imaginable: from scorching desert sands to frozen tundra, from rainforest humidity to the stormy salt spray of offshore oil rigs. Automating industrial valves can help increase safety, raise productivity, and reduce operating costs. You can rely on Limitorque to make it all easier— from project specification through to startup.

Valve control is easier than ever with high-tech, high-performance Accutronix MX multi-turn actuators. An LCD display provides easy-to-read actuator status, diagnostics, setup information and works with local control switches to make commissioning and calibration quick and easy. The MX also offers unsurpassed accuracy with a 100% repeatable absolute encoder which provides optical sensing of the valve position.The Accutronix MX meets or exceeds all relevant specifications of major U.S. and international standards. It’s also tested and certified for demanding environmental and operational conditions, including temperature extremes, electromagnetic interference, corrosive atmospheres, and XP environments.

The Flowserve Limitorque QX quarter-turn is a smart electronic valve actuator providing enhanced safety and reduced downtime through improved diagnostics, built-in self-test (BIST) features and LimiGard™ fault protection. The QX design builds on more than 10 years of experience with proven Limitorque MX technology—the first-generation double-sealed electronic valve actuator from Flowserve designed to provide control, ease of use and accuracy. The QX includes all the user-preferred features of the MX in a quarter-turn smart actuator package.

The L120 is a proven choice for any valve requiring either rotary or linear power. Whether gate or globe valves, sluice gates or pen stocks, the L120 performs reliably in any situation demanding positive, dependable actuation. It can be used linear-action in valves and combined with a Limitorque PT-series gearbox, the L120 can be used to control butterfly, ball, and plug valves, as well as damper drives, flop gates, or any other device which requires 90° movement. The L120 is factory-lubricated and weatherproofed for service in temperatures ranging from –20°F to 150°F. Weatherproof enclosures meet NEMA I, II, IV, and Vl standards, as well as IP68. Integral controls with printed board circuitry and plug-in modules are also available

The PT series worm gear operators are designed to operate butterfly, ball, and plug valves, or other devices requiring 90° operation. PT units can be manually operated with a handwheel or wrench nut, or automated with an L120 & MX series electric actuator. The removable splined adapter simplifies alignment with the valve stem keyway for more convenient installation. A spur gear attachment or electric actuator can easily be added.

Limitorque’s B320 series worm gear operators excel in highly specialized applications. Their rugged dependability has been proven in demanding situations, including the nuclear power industry, large damper operations, and power plant flue gas desulphurization. Whether controlled manually or with an L120 & MX actuators, B320 operators are ideal for any multiturn application requiring accurate, reliable performance. They are used with gate and globe valves, and sluice gates in power plants, petrochemical installations, pipelines, and water and waste treatment facilities.

The HBC series worm gear operators excel in highly specialized applications. Their rugged dependability has been proven in the nuclear power industry, large damper operations, and power plant flue gas desulphurization. Whether controlled manually or with an L120 actuator, HBC’s are ideal for any multi-turn application requiring accurate, reliable performance.

Limitorque's electric actuator products are suited for quarter or multiturn application with torque ranges up to 81,600NM. With over 70 years experience in the industry, Limitorque's proven designs have a multitude of sizes, configurations and combinations to meet most demanding electrical, electronic, environmental, safety, compliance, and automation requirements.

Product range includes:

• Accutronix MX Multi-turn Electric Actuator
• Smart QX Quarter-turn Electric Actuator
• Series L120 Multi-turn Electric Actuator
• Weather-proof, Submersible and explosion proof housings are available.
• Integral controls with printed board circuitry and plug-in modules are also available.
• WTRC and Now PT Quarter Turn Gearboxes
• B320 Bevel Gearbox
• HBC Gearbox
• Comprehensive library of data, schematics, torque calculations, gear ratios, voltages, diagnostics tools to ensure proper sizing of actuators for each application.,

For a product overview, please click here.   Contact Acrodyne for your local supports for spares and services in Australia on Tel (03) 8727 7800