Union Marine (Asia) Pte Ltd
Electric Actuation


Union Marine Electric Actuator are suitable for controlling 0°~270° rotation of the valves and other similar products, such as butterfly valve, ball valve, damper, flapper valve, etc.

The Electric Actuators are of robust design and construction. The housing is hard anodised Aluminium Alloy and external epoxy coated to provides superior resistance for rigorous environments.

Each Electric Actuator is fitted with a specially designed squirrel cage induction motor to generate high starting torque and is fitted with thermal overload protection to prevent damage from overheating. Included internally are both torque and limit switches for remote indication.

Our Electric Actuators are supplied standard with manual override and external operating clutch lever that switches the actuator to manual mode. The clutch lever is automatically disengaged when switched to electrical operation.

The gear mechanism is self-locking to eliminate the possibility of reverse movement from the valve.

Our design features ISO mountings and removable drive bushing that allows easy adaption to suit most valve requirements.

A wide range of optional accessories including extra limit switches, potentiometer, process control unit, local control and signal indication are available to suits project requirements and electric operated valve functions.

Selection of operation by 440V/220V/110V AC power or 24V/110V DC power. Inputs 4-20mA current signal or 0-10V DC voltage signal as control signal for modulating control.

The AOX series electric actuator are available in IP66/67 construction.

The CHQ series electric actuator comes with CE and explosion-proof certificate suitable for hazardous area installation, Zone 0 / Class1 Div 1 applications. Torque output available from 100Nm to 3,000Nm.


Data Processing Cabinet

Union Marine Remote Control Valve System Data Processing Cabinet processes the control and monitoring signals and necessary communication between electrical devices and intelligent devices and computer based control stations.

The raw data collected from field equipment are converted to signals for interface with PLC based systems.

Our configuration provides monitoring and control functions necessary for the safe and efficient operation of the Remote Control Valve System in accordance with the standards of marine classification.

Data Processing Cabinet comprises mainly of the following:

  • PLC CPU controller with Communication interface
  • PLC Input / Output modules
  • Power supply
  • Communication modules
  • Electrical components

We apply reputable electrical components which provides accurate and reliable control through proven design. The I/O Modules are of modular design that enable great flexibility for future conversions or upgrading.

Our Computer & Touch Panel Control Stations for the Remote Control Valve System are built on control platforms that can be integrated with:

  • Tank Level Gauging System
  • Cargo monitoring & Control System (Tank Pressure, Tank Temperature,
    Cargo line Pressure, Ballast Water & Cargo Pumps pressure, Pump remote
    start/stop, Fire Pump Pressure, Hydraulic pressure etc..
  • Cargo Management System


Control Stations

Union Marine Computer Control Station consist of Marine Type Approved hardware & HMI.

Centralized or distributed control configuration options available to suit vessel requirement and control philosophy. Customized colour graphic pages provided for clear visual display and ease of operation.


  • Supervision of the complete control system.
  • Vivid graphic display and presentation to customer’s exact requirements.
  • Alarm monitoring, data logging and trending of all variables.
  • Analysis of data from history files (Alarm statistics and Events)
    - an excellent tool for easy preventive maintenance.
  • Integrated control of multi-platform systems.
  • Reliable redundancy options.