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  • Electronic Expansion Valve Controller Evc20 - Korea

    price: check with company for price

    New Generation of Electronic Expansion Valve Controller
    With the state-of-the-art technologies, EVC20 has many smart functions and features which can be applied to various fields.

    High Performance and Stability
    A top-level performance and stability can be achieved with high speed CPU, biopolar step motor driver, 2 RS485 communication ports, and extra remote displays


    Precise PID and Superheat Control
    Based on the advanced PID algorithm, precise superheat control is possible.


    Intelligent Temperature and Pressure Control(Hot Gas Bypass and Liquid Injection)
    Temperature and pressure are controlled intelligently by hot gas bypass and liquid injection.


    Compatible with Various Refrigerants
    R22, R134a, R404a, R407c, R410a, R717, and R23 are compatible and more refrigerants will be available soon.

    RS485 Communication
    EVC20 can monitor and control up to 128 units(PC, heat pumpt controller, DDC, and etc.) via RS485 communication. 2 extra displays(cable length: 5m) can be connected as well.


    Manual Valve Open Ratio Configuration
    Operators can configure the valve open ratio manually for the special purpose temporarily.



    Smart-Rail Mount



    Perfect Tech Support
    EVC20 was developed 100% by Dotech's unique design and advanced technologies and tech support is provided perfectly.


    Company Contact:


    • Phone: 82314953767

    • Address: 30 Dongsan-Ro, Ansan-Si, Korea

    • Email: Email


    Published date: January 19, 2017 -

    • Business Description: Supplying a Broad Range of Controllers
      DOTECH INC, located in Ansan-Si, Gyeonggi-DO, Korea, is one of the fastest growing manufacturing companies supplying a broad range of controllers for HVAC&R applications to both domestic and overseas markets.

      Our controllers range from the simplest one with single board to sophisticated and intelligent microprocessor based products capable of RS485 communication with upper systems such as HMI, personal computer, touch screen and more; and displaying status of equipments, storing trip messages in non-volatile memory as well.

      Wide Product Range to Choose From
      In addition to this, our product line includes various kinds of temperature and humidity transmitters (sensors) with 4 to 20mA output or RS485 (Modbus), thermostat and humidistat for general use purpose and refrigeration applications such as showcase and cold room, air compressor controllers, clean room, air shower, particle sensor, spare parts and many more.

      High Quality is Guaranteed
      We aim to become one of the best, faithful and trustworthy worldwide manufacturers and suppliers who is dedicated and committed to provide goods to valued and potential customers at a very high quality, reliability and reasonable price.

      Benefit from Our Advantages
      Since our establishment, DOTECH INC has been continuously investing in and focusing on technological improvement and will provide valued customers with better service, technical advice, product selection that fit their expectations and needs through these ongoing efforts to develop new products based on practical experiences in the field.

      Contact us now.

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