The solid handwheel can provide reliable emergency manual operation in the circumstance of power failure.

The manual/electric reversion handle can be operated at any time safely. At the same time as pressing down the handle with proper force, turn the handwheel slowly so as to drive the internal clutch. The clutch can be automatically segregated when the electric motor is powered on and is locked up.

A professionally designed useful work measurement system is used as the output torque measurement system. The system is developed from the familiar electric energy measurement technology, which can obtain accurate, repeatable torque measurements, independent of frequency, voltage and temperature changes.

The LCD on the control panel can provide transient and latest state and valve position in Chinese or in English. Using intuitional menu structure, it can provide calibration and diagnosis information, including torque curve, operation and failure record, electric motor state, local information, hardware data and so on.

The “on”/ “off” rotary knob and the “local”/ “halted”/ “remote” rotary knob with padlock all adopt isolated magnetic transfer Hall effect device with favourable sealing performance and no cut-through shaft. Meanwhile, such a design eliminates troubles that may bring by the fragile reed switch that is easy to break down.

The high-quality aluminium alloy shell is exquisite and convenient. It is painted with protective material for the purpose of adapting to the extremely hostile environment, and the coating can be changed to other types as required.

The low inertia and high torque electric motor enable the motor to reach peak torque rapidly after starting and experience almost no overrun during the non-exciting period. A precise temperature switch is embedded in the coil of the electric motor, which protects the motor from being affected by environmental temperature, maintaining it within maximum temperature capacity. Meanwhile, the motor shaft is independent of the worm.

The worm transmission chain of the electric motor is simple and exquisite in structure. With constant transmission efficiency and mechanical self-locking function, the motor doesn’t need any brake. The transmission part is infused with long-acting lubricating oil, which facilitates long-term operation without the necessity of maintenance.

The double-seal design provides a terminal box that is separated from the control room and completely sealed. Such design can help the internal side of the actuator separate from the outside, preventing moisture, dust and harmful gas from entering into the actuator and fully protecting the internal components and parts.

The control unit is composed of the control module, supervision module and protection module. Utilizing a clip cage-type installation structure, it is allocated with functions of damping and buffering. Besides, the plug-in type connection facilitates rapid and inerrable disassembly.

The lubricate thrust bearing which is designed to improve lifetime and facilitate disassembly can help remove the actuator easily without changing the valve position. The simple and dismountable driving shaft sleeve can be processed in terms of the valve rod so as to connect with the valve.