What is Motor Operated Valve or Motorised Valves?
Applications of motor operated valves
> Valves located in remote, inaccessible or hazardous places.
Motorised control valve / Motor operated valves are usually for full open and full close applications.
Types of motor operated valves
Inching valves - used were some degree of control. Example a gradual opening and closing is required, applications include, reflux lines, boiler start up vent, boiler IBD valves, boiler main steam valves etc.
Precision flow valves - this is a precision inching valve, in inching valve the motor operates in steps configured in the controller, e.g. 5%, 10% opening steps. In precision flow valves, a continuous control is enabled by the use of proper feedback from the field to the controller which is not usually found in other motor operated valves. An example is steam injection valve / water injection valves used in GT for Nox control.
Key elements of Motor Operated Valves.
Basic Wiring diagram
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