The advantages of GRAT Electric Actuator

    The advantages of GRAT Electric Actuator

    ★Small volume, large torque
    The whole volume and weight is about 1/3 of similar traditional products, and presents small input power, large torque, small installation place, and convenient transportation.

    ★Strong motor
    The motor is designed according to the valve operating characteristics with high starting torque, low starting current and smaller rotation inertia. The stators winding with a inbuilt overheat protector (automatic recovery type) to stop the motor to protect whole set of equipment safety when the valve was blocked.

    ★Precision gear
    This actuator consists of precision tangent multistage gear and shaft made of superior steel with heat treatment to present high strength, good abrasion resistance, and to withstand a long-term fatigue load. The gear mechanism is filled with molybdenum grease of imported food grade to complete the permanent lubrication without inspection or maintenance.

    ★Torque transmission output mechanism
    In any position, the valve can be locked by the worm gear and worm stem made of high strength special alloy materials by precision machining. The worm gear and output shaft is an integral structure to fundamentally eliminate torque transmission interval problem to ensure more reliable transmission.

    ★The screw won’t off
    The design can prevent the parts from losing during disassembly.

    ★Mechanical limited device
    Mechanical stroke limit bolt made of stainless steel and a limited stopper can precisely adjust the actuator to be a required angle. In order to conveniently modulate, the bolt is at the outside of body, and which is locked at required position by stainless steel nut after finishing each adjustment. Limit angle is usually set to 0~900  in the factory.(Custom angle depends on the customer )

    ★Valve opening display.
    The lens and body is glued with glass adhesive of imported food grade, which has high adhesive strength, unpolluted products and high temperature resistant to effectively resist the corrosion from the rain and other severe environment.

    ★Manual handle
    Stainless steel handle can drive valve to rotate in debugging or power failure, S means shut, O meats open.

    ★Wiring interface
    Two G1/2 waterproof cable joint is respectively for power line and signal line to prevent interference.

    ★The micro switch
    The imported micro switches have contact quality, operating life, insulating performance.

    ★Precision potentiometer  
    The high precision potentiometer is from three the largest brands supplier in the world, whose service life has more than 100,000 times long, and which is specially suitable for small opening modulation to ensure the accurate regulation of electric valve.

    ★Control module
    The control module with resin package has the remarkable characteristics such as high decomposition degree, powerful function, anti vibration, long service life and high reliability.

    ★Servo  
    The inbuilt control module continuously compares the input signal with the potentiometer feedback signal to stop the motor at equilibrium, then output shaft make the valve hold on in the corresponding position until input signal is changed to ensure continuous precision adjustment of valve opening.