Electric actuators

Our company offers complete solutions for the automation of industrial fittings for the most technically complex industries – power industry, water supply, heavy industry, oil and gas sector. Since the quality of technology process depends on actuators, basic requirement for actuators and control and monitoring equipment to meet is reliability. It is also very important that the equipment has long service life, minimal maintenance with a long interval and maintainability. These are the requirements we consider when selecting equipment to solve problems of automatic control of technological processes.

  • Multi-turn actuator is capable of withstanding thrust applied to the valve and transmits torque to the valve for at least one revolution. In general, multi-turn actuators are required to perform more than one revolution.

    Actuators SA and SAR
    Actuators of the SA type range for open-close duty and positioning duty are rated for class A and B or types of duty S2 - 15 min. A special version for longer running is available for the S2 - 30 min duty.

    Explosion-proof versions SAEx and SAREx.
    Explosion-proof devices must be used in plants where potentially explosive atmospheres are likely to occur. These devices are designed so that they will not act as ignition source. Their constructive measures prevent the occurrence of ignition sparks or hot surfaces.

     

  • Part-turn actuators transmit torque to the valve for a rotation of one revolution or less. They do not have to be capable of withstanding axial thrust. Part-turn valves - such as butterfly valves and ball valves - are often designed in multi-turn version. SQ part-turn actuators are equipped with internal end stops to allow precise approaching of end positions during hand wheel Operation.

    Actuators SQ and SQR
    Actuators of the SQ type range for open-close duty and positioning duty are rated for class A and B or types of duty S2 - 15 min.  The modulating actuators of the SQR range are rated for class C or types of duty S4 - 25 %.

    Explosion-proof versions SQEx and SQREx
    Explosion-proof devices must be used in plants where potentially explosive atmospheres are likely to occur. These devices are designed so that they will not act as ignition source. Their constructive measures prevent the occurrence of ignition sparks or hot surfaces.

     

  • To perfom linear movements, e. g. in case of globe valves, the multi-turn actuator SA ... can be combined with the linear thrust unit LE, forming an electric linear actuator. In case a lever arrangement has to be operated, the linear thrust unit can be mounted on a base.

    Combinations with linear thrust units


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    If due to a lack of space, valves such as butterfly valves can only be operated via a lever arrangement, the electric lever actuators SQF offer the optimum solution. They are based on the part-turn actuators SQ.

    The lever actuators are based on the well-established part-turn actuator SQ and therefore have the same characteristics.

    ·  Design features

    • Torque range from 100 Nm to 2,400 Nm
    • Operating time ranges for 90° from 4 s to 100 s
    • Limit and torque seating
    • 3-ph AC motors
    • Handwheel for manual operation

     

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