1.1 Housing
The housing is made of hard aluminum alloy, treated with anodizing and polyester powder coating, featuring strong corrosion resistance. It has a protection rating of IP67, NEMA 4 and 6, with IP68 and explosion-proof versions available as options.

1.2 Motor
A fully enclosed squirrel-cage motor with small size, large torque, and low inertia. It has an insulation class of F and a built-in overheat protection switch to prevent damage from overheating.

1.3 Manual Structure
The handwheel is designed for safe, reliable, labor-saving operation with a compact size. When power is off, the clutch handle can be toggled for manual operation; when power is on, the clutch automatically resets. (Note: The electric actuator will remain in permanent manual mode when the motor is not powered.)

1.4 Indicator
The indicator is mounted on the central shaft for observing the valve position. The lens adopts a convex design to prevent water accumulation, ensuring convenient observation.

1.5 Dryer
Used to control temperature, preventing internal moisture condensation in the actuator caused by temperature and weather changes, thus keeping internal electrical components dry.

1.6 Limit Switch
Equipped with dual mechanical and electronic limits. The mechanical limit screws are adjustable for safe and reliable operation; the electronic limit switch is controlled by a cam mechanism, with a simple adjustment structure enabling precise and convenient position setting, no battery required. (Microswitch contacts are all silver-plated.)

1.7 Torque Switch
Provides overload protection (except for CHQ-005/008/010). In case of valve jamming or foreign objects, it automatically cuts off the motor power to better protect the valve and electric actuator from damage. (Pre-set at the factory; do not adjust arbitrarily.)

1.8 Self-Locking
A precision dual worm and worm gear mechanism enables efficient transmission of large torque, with high efficiency, low noise (maximum 50 dB), and long service life. It has a self-locking function to prevent reverse rotation, ensuring stable and reliable operation of transmission parts. Factory-filled with high-performance grease, no additional lubrication required during use.

1.9 Anti-Drop Bolts
When the housing is removed, bolts remain attached to the shell and will not fall off. All external bolts are made of stainless steel.

1.10 Installation
The bottom mounting dimensions comply with the ISO 5211 international standard. The drive sleeve can be disassembled and machined as needed, offering strong adaptability. It can be installed either vertically or horizontally.

1.11 Wiring
Control circuits comply with single-phase or three-phase power standards, with compact and reasonable wiring arrangement. Terminal blocks can effectively meet the requirements of various additional functions. Passive contacts are provided for valve full open/close positions (custom processing available upon customer request).

1.12 Intelligent Module
Adopts a control board integrating high-integration, low-power consumption microcontrollers and analog circuits, with an all-metal external mounting design. This effectively isolates the actuator motor heat source from the control board, significantly improving the anti-interference performance and temperature resistance of both software and hardware.

1.13 Digital Valve Position Display
During valve opening or closing, position changes are displayed in large digits on the LCD screen in real time.

1.14 Automatic Phase Sequence Adjustment
The intelligent actuator automatically detects the phase sequence of the connected three-phase power supply, eliminating the need for users to consider phase sequence issues.

Valve Installation:
(1) Before installation, check that the product model, tag number, and specifications match the requirements. Inspect the entire valve for missing or loose parts.
(2) Prior to installation, clean the pipeline. Ensure there is sufficient straight pipe section at the valve inlet and install a filter. When connecting the valve body to the pipeline flanges, ensure coaxiality.
(3) Thoroughly clean the pipeline before installing the valve.
(4) The installation site should ensure the safety of personnel and equipment, facilitating operation, disassembly, and maintenance.
(5) The valve should be installed vertically upright on horizontal pipelines. If necessary, it can be installed at an angle, but horizontal installation should be avoided. For occasions with heavy valve weight or vibration, use a support frame.
(6) The medium flow direction must align with the arrow on the valve body. The air supply should be dry and oil-free. The valve should be used in environments with temperatures ranging from -20℃ to 55℃.

Valve Maintenance:
(1) Cleaning the Valve: For general media, cleaning with water is sufficient. For media harmful to health, first understand their properties and then select an appropriate cleaning method.
(2) Disassembly: Remove rust from exposed rusted parts first. Before derusting, protect the machined surfaces of precision parts such as the valve seat, valve plug, valve stem, and push rod. Use special tools when disassembling the valve seat.
(3) Valve Seat: Minor rust or wear on the sealing surface can be repaired by machining. If damage is severe, replace the seat. However, both repaired and replaced hard sealing surfaces must be lapped.
(4) Valve Stem: If the surface is damaged, it must be replaced.
(5) Damage to Push Rod, Guide, and Sealing Surfaces: Reverse-acting actuators must be replaced; direct-acting actuators can be reused after proper repair.
(6) Compression Spring: If there are cracks or other defects affecting strength, replace it immediately.
(7) Wear Parts: Packing, gaskets, and O-rings must be replaced entirely during each maintenance. Check the valve plug and diaphragm for cracks, aging, or corrosion that may cause future failures. Decide whether to replace them based on inspection results, but the diaphragm service life should not exceed 2-3 years.
(8) When reassembling the valve, ensure alignment. Tighten bolts diagonally and lubricate sliding parts. After reassembly, debug the valve according to the factory test items and methods. During this period, accurately adjust the packing compression force and the valve plug closing position.

When placing an order, please fill in the Specification Sheet or specify the following information: