For projects evaluating a Rotork actuator alternative, FLE-MZ Gen II combines 100–5000 N·m rated torque coverage with intelligent control, multiple communication options and configurable protection for demanding valve automation.
Cross-reference by torque, speed, interface, power, control and environment — not by brand name alone.
FLE-MZ Gen II is a multi-turn electric actuator platform for industrial valve automation. Normal and intelligent configurations share a compact mechanical architecture while allowing the project to be matched around control, communication, protection and site conditions.
Intelligent models support parameter setting without opening the cover, Chinese / English LCD HMI, infrared remote control and optional Bluetooth control.
Motor overheating protection, open / close over-torque protection, travel-limit protection, instantaneous reverse-rotation protection and ESD emergency cut-off are listed for the intelligent type.
On/off and intelligent control are available, with bus protocol options including Modbus, Profibus and HART, plus 4G. Five programmable relays are listed for intelligent models.
The specification describes a mature gear and turbine-worm transmission architecture with high efficiency, low noise, self-locking and low manual handwheel torque.
The visual arrangement follows the supplied structure drawing: one central actuator cutaway, six component images positioned around it, and six numbered explanations below. Replace the image URLs later without changing the layout.
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It is made of high-quality aluminum alloy, which is formed through die-casting under high pressure. The structure is exquisite and lightweight. The outer protective coating is processed by powder coating technology, enabling it to adapt to extremely harsh environments. The outer protective coating can also be customized with other types of coatings according to requirements.
The worm gear and worm transmission chain is simple in structure, with a delicate design, maintains a stable transmission efficiency, has a mechanical self-locking function, does not require a brake, and the transmission part is lubricated with long-lasting lubricating oil, allowing for long-term operation without maintenance.
With low inertia and high torque induction motor, large starting torque and high efficiency. The motor can quickly reach peak torque when starting. There is a temperature switch inside the motor coil, which is not affected by the ambient temperature. It can prevent the motor from overheating and causing damage. The insulation grade is F level.
The control panel LCD display can provide instantaneous and up-to-date status and valve position. It offers options in both Chinese and English languages, and features an intuitive menu structure. It can offer calibration and diagnostic information. It includes torque curves, operation and fault records, motor status, machine information and hardware data, etc.
The control unit is composed of a control board, a display board and a drive board. It has the functions of diagnosing faults such as phase loss, motor overheating, motor locked rotation and coding errors. The fault information is displayed on the LCD interface and the fault signal is feedback to the remote control room.
The position sensor is with an absolute value encoder, which not affected by changes in external environmental temperature, features high measurement accuracy, strong anti-interference ability and a long service life.
For complete performance parameters, connection dimensions and wiring diagrams, download the full FLE-MZ Gen II multi-turn electric actuator specification.
Download Full SpecificationSalt mist, dust, water ingress and extreme ambient temperature all change the actuator specification. FLE-MZ Gen II offers multiple ingress-protection, corrosion and temperature configurations; final project suitability depends on the exact ordered model and site requirement.
For exposed seawater infrastructure where sealing, coating selection and remote operation become primary actuator-selection factors.
IP65 / IP67 / IP68 · Marine-corrosion configuration
Dust, washdown and exposed equipment increase the importance of enclosure protection, drive reliability and torque protection.
Ingress protection · Self-locking drive · Torque monitoring
Remote water and pipeline sites may combine low temperature with limited operator access and long maintenance intervals.
Listed configurations down to -60°C*Key values below are drawn from the supplied FLE-MZ second-generation actuator specification.
| Parameter | Listed value / option | Selection note |
|---|---|---|
| Power supply | AC415V, AC380V, AC220V, DC24V, DC48V | Other customized power supply is also listed. |
| Protection grade | IP65, IP67, IP68 | Performance table specifically lists IP67 / IP68. |
| Ambient temperature | -30°C to +70°C; -40°C to +60°C; -60°C to +50°C | Temperature configuration depends on ordered version. |
| Explosion-proof class | Exdb IIB T4; Exdb IIC T5 | Confirm certification and site-area requirement for each project. |
| Anti-corrosion | Conventional; industrial corrosion; marine corrosion | Choose according to site atmosphere and coating requirement. |
| Intrinsic error | ≤ 1% | As listed in Performance Parameters I. |
| Ambient humidity | ≤ 95% (25°C) | As listed in Performance Parameters I. |
| Motor duty | Rated operation: 15 minutes; Class F insulation | Special operating time can be customized according to the specification. |
| Model | 24 rpm | 48 rpm | 96 rpm | 10 rpm |
|---|---|---|---|---|
| MZ10 | 100 | 50 | 35 | — |
| MZ15 | 150 | 70 | 50 | — |
| MZ20 | 200 | 150 | 75 | — |
| MZ30 | 300 | 250 | 100 | — |
| MZ45 | 450 | 300 | 160 | — |
| MZ60 | 600 | 450 | 280 | — |
| MZ90 | 900 | 450 | 280 | — |
| MZ120 | 1200 | 600 | 300 | — |
| MZ180 | 1800 | 1200 | — | — |
| MZ250 | 2500 | 1250 | — | — |
| MZ350 | — | — | — | 3500 |
| MZ500 | — | — | — | 5000 |
Rated torque varies with output speed. Final actuator sizing should consider valve running / seating torque, thrust, travel, duty cycle, power supply, mounting interface and safety factor.
For buyers evaluating a Rotork actuator alternative, the most useful comparison is not a logo-to-logo claim. It is whether the actuator platform matches the project's torque, environment, control architecture, commissioning method and installed-base requirements.
Send the existing actuator model or nameplate and we can compare the key engineering inputs before proposing an FLE-MZ Gen II configuration.
Provide the Rotork model, nameplate photo, power supply and control type. This establishes the starting point for the actuator cross-reference.
Running / seating torque or thrust, stem dimensions, number of turns and target operating time are more important than matching the actuator model name alone.
Check mounting interface, output speed, duty, control signals, communications, ingress protection, ambient temperature and any hazardous-area requirement.
Use the engineering data table above to shortlist the torque / speed range, then confirm the final model and project options with Fleyenda.
When specifying a valve actuator, compare more than the brand. Match the actuator to valve torque and thrust, output speed, operating time, duty cycle, mounting interface, enclosure protection, hazardous-area requirements, control protocol and maintenance strategy. FLE-MZ Gen II is a configurable multi-turn electric actuator platform for industrial gate valve, globe valve and sluice-gate automation.
For a true electric valve actuator cross-reference, send the existing Rotork actuator model or nameplate together with valve data. We can review torque, speed, power, control, interface and environmental requirements before recommending an FLE-MZ configuration.
Not automatically. A valid cross-reference must confirm valve torque / thrust, output speed, mounting interface, stem or drive dimensions, duty, power supply, control signals, environmental class and fail-safe philosophy.
Provide valve type, running and seating / unseating torque or thrust, stem dimensions, turns or travel, target operating time, duty cycle, power supply, control mode, environment and any explosion-proof or protocol requirements.
The supplied specification lists Modbus, Profibus and HART bus-protocol options, plus 4G. Infrared remote control and optional Bluetooth are listed for intelligent models.
We’ll help match torque, speed, interface, control and harsh-environment requirements to an FLE-MZ Gen II configuration.
