Limitorque MX Electronic Valve Actuator

The Limitorque MX is the product entry in the non-intrusive, double-sealed, smart electronic actuator marketplace.

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  • Brands:
    Limitorque
  • Applications:
    Heavy Oil, Oil Sands and Shale, Molten Salt Transfer, Nuclear Charge, Petroleum Production and Refining, Sewage Collection and Treatment, Tank Farm Transfer, Water Supply and Distribution (water), Boiler Circulation, Decoking, Desalination, Filtration, Gas Production
  • Industries:
    Water Treatment, Mining, Oil and Gas, Power Generation, Nuclear Power, Water Supply and Distribution, Wastewater Collection and Treatment

The Limitorque MX is the multi-turn product for the non-intrusive, double-sealed, smart electronic actuator marketplace. Introduced to the market in 1997, the MX is built upon a wealth of experience and performance in the valve actuation industry. Thousands are installed on all six habitable continents and in all major market segments, including power generation, oil and gas, plus water and waste water treatment.

What sets the MX actuator apart is the combination of control and reliability facilitated by advanced Limitorque technology. Simple to set-up and operate, the MX employs a graphical dot matrix display with local control switches to deliver instant actuator status and valve position in eleven languages.

The MX electronic actuator network options include Modbus® DDC, Foundation Fieldbus™ H1, PROFIBUS DP™ V1, PROFIBUS PA™, DeviceNet™, and HART®. Distinguishing itself from the competition, the MX actuator features an absolute encoder for positioning which doesn't require trouble-some batteries and is designed with B.I.S.T. (Built In Self-Test) capability for self-diagnosis. Additional features include LimiGard circuitry, which safeguards the actuator from spurious electro-magnetic interference, MX Quik, providing uninterrupted local indication during main power losses, and Limitorque’s namesake feature – torque sensing.

The MX electronic actuator can provide torque output of up to 1700 ft-lb (2304 Nm) and is available in a wide variety of configurations to accommodate various applications and valve designs. For torque-only applications, the MX can be directly coupled with valves. For thrust applications, a thrust base is installed on the MX. The MX can additionally be coupled to WG or HBC worm gearboxes for operation on part-turn valves such as butterflies, balls, plugs, and dampers. For rising stem valve applications, the MX can be coupled with V series and MT bevel gearboxes; SR spur gearboxes; and the LB (Linear Base) attachment for linear, control valve applications.

The MX actuator provides the user with predictable, reliable and safe operation for years to come, in the most rigorous applications and extreme environments. Its features provide users with pioneering technology such as:

  • Redundant absolute encoder with B.I.S.T. – never needs batteries
  • Graphical dot-matrix display allows 180° rotation of text, diagnostic graphs and supports 11 languages: English, Spanish, German, French, Italian, Portuguese, Russian, Malay, Mandarin, Katakana, and Turkish.
  • Torque ranges from 20 ft-lb (27 Nm). to 1700 ft-lb (2304 Nm)
  • Double-sealed terminal block compartment prevents moisture ingress into controls enclosure.
  • Available with arctic temperature to -76°F (-60°C) and solid-state starter options.
  • Optional Bluetooth® wireless connectivity with a range up to 32.8 ft (10 m). When used with Limitorque Dashboard™ Windows®-based software, diagnostic information is easily transferred to a PDA, laptop computer or cell phone.
  • SIL 2 and SIL 3 capable certification to IEC 61508 for standard MX and most every option.

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Limitorque MX Electronic Valve Actuator User Instructions (IOM) (Spanish Latin American)

Actuador electrónico Limitorque MX Instrucciones de Uso (IOM)

MX Electronic Actuator SIL Safety IOM

MX Electronic Actuator SIL Safety IOM

Limitorque MX Electronic Valve Actuator User Instructions (IOM)

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Limitorque MX Electronic Valve Actuator User Instructions: Installation, Operation and Maintenance Manual (IOM)

Limitorque MX Electronic Valve Actuator Selection Data Specification Sheet

Limitorque MX Electronic Valve Actuator Selection Data specification sheet

Limitorque MX Electronic Valve Actuator Profibus DTM Software Flier

This flier offers a brief description to the benefits of the Limitorque MX Electronic Valve Actuator Profibus DTM Software.

Limitorque MX/QX Electronic Valve Actuators Profibus DP/PA Field Unit User Instructions (IOM)

Limitorque MX/QX Electronic Valve Actuators Profibus DP/PA Field Unit User Instructions: Installation, Operation and Maintenance Manual (IOM)

Limitorque MX/DDC-100 Field Unit User Instructions (IOM)

Limitorque MX/DDC-100 Field Unit User Instructions: Installation, Operation and Maintenance Manual (IOM)

Limitorque MX Electronic Valve Actuator User Instructions

Limitorque MX Electronic Valve Actuator User Instrucitons: Maintenance and Spare Parts

Limitorque MX Series Electronic Valve Actuator and L120 Series Electric Actuators Product Specifications

Limitorque MX Series Electronic Valve Actuator and L120 Series Multi-Turn Electric Actuators product specificatons: Motor Performance Data

Limitorque MX-85/140 Actuator User Instructions

Limitorque MX-85/140 Actuator User Instructions: Maintenance and Spare Parts

Limitorque MX/QX Electronic Valve Actuators Technical Brochure

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This technical brochure details the protection, control and monitoring capabilities of the Limitorque MX/QX range of Electronic Valve Actuators.

Limitorque MX Electronic Valve Actuator Technical Specifications

Limitorque MX Electronic Valve Actuator technical specifications

Limitorque MX Series- The Next Generation in Smart Multi-Turn Actuation Brochure

Limitorque MX Electronic Valve Actuator The Next Generation in Smart Multi-turn Actuation brochure

Limitorque MX Electronic Valve Actuator User Instructions (IOM)

Limitorque MX Electronic Valve Actuator User Instructions: Installation, Operation and Maintenance Manual (IOM)

Limitorque Accutronix MX Electronic Valve Actuator User Instructions (IOM)

Limitorque Accutronix MX Electronic Valve Actuator User Instructions: Maintenance and Spare Parts Manual (IOM)

Limitorque MX Actuator High-Speed Gear Increaser

Limitorque MX Actuator High-Speed Gear Increaser

Flowserve ValveSight for the Limitorque MX/QX

Overview of Flowserve ValveSight for the Limitorque MX and QX actuators.

LMITIM2306 - Limitorque MX Actuator User Instruction (Italian)

Limitorque MX Actuator User Instructions: Italian Translation

Concentrated Solar Power Generation

Flowserve's engineered solutions maintain durability and precision in the often harsh environments and process conditions of CSP generation, utilizing designs that minimize leaks, function at extreme temperatures, and resist corrosion and abrasion.

LMKOIM2306 - Limitorque MX Actuator User Instruction (Korean)

Limitorque MX Actuator User Instructions: Korean Translation

Limitorque MX and QX Valve Actuators

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Limitorque MX and QX valve actuators overview

MXa SIL Guidance and Certification

MXa SIL Guidance and Certification - SIL 3 capable for critical applications

Limitorque FR Shells Removable Intumescent Fireproof Coatings

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Limitorque FR Shells Removable Intumescent Fireproof Coatings - Simple Fireproof Protection, Quickly!

MX/QX HART Field Unit Flyer

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MX/QX HART Field Unit Flyer

Limitorque MXa/QXM Linear Base User Instructions (IOM)

Limitorque MXa/QXM Linear Base User Instructions: Installation, Operation, and Maintenenace (IOM)

MXa and QXM LB (Linear Base)

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MXa and QXM LB (Linear Base) - Limitorque control and automation for process control valves

HBC Worm Gearbox

Description: The Limitorque HBC series of worm gear operators excels in demanding applications, ranging from nuclear power plants to critical service flow control in hydroelectric plants. The HBC is suitable for manual operation or motorized with Flowserve Limitorque MX, L120 and SMB actuators.

CS/CSE Local & Remote Auxilary Control Stations

Description: Limitorque's unique concept in remote control stations, the CS, can be provided in two versions. The basic CS can be used for virtually all of Limitorque's hardwired controls. It is compatible with 120 VAC or 220 VAC control schemes. The electronic version CSE is compatible with 2 VDC control schemes.

Network Products

Description: Flowserve - Limitorque has been a global leader in the development and deployment of network products for electric valve actuators. Network products include DDC-100 (Modbus), Foundation Fieldbus H1, Profibus DP-V1 and Profibus PA. In fact Flowserve - Lim

B320 Bevel Gearbox

Description: The Limitorque B320 series of bevel gear operators delivers efficient and dependable operation for multi-turn applications. Suitable for manually operated valves and gates or motorized operation with Flowserve Limitorque MX, L120 and SMB actuators.

WG Worm Gearbox

Description: The Limitorque WG worm gearbox provides reliable performance in a wide range of weatherproof, submersible and buried service applications. When motorized with Limitorque MX, L120 or SMB electric actuators, the WG offers unsurpassed quality and longevity for quarter-turn and multi-turn, torque-only applications.

MT Bevel Gearbox

Description: The MT series incorporates a rugged thrust base design ideally suited for torque-seated valve applications and applications involving elevated process temperatures. The MT may be combined with MX, L120 and MX actuators.

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