How does a motor operated valve work?

In this post, we explain the basics of how does an motor operated valve work.

Before further explanation of how does motor operated valve work, the following information would need to be understood or be familiarized.

What is MOV?

It is an "On-Off valve" of which has a motor that is used to fully open or fully close the valves in pipelines. It has a purpose for flow control and flow isolation.

The electric motor is mounted on the valve and geared to the valve stem so that when the motor operates the valve will open or close. For this MOV, motor operated with actuator control from local panel or, from control room is required.

When should MOV be used?

Typically, the following conditions are likely be the basis:

• Whenever frequent operation is required.
• Valves located in remote, inaccessible or hazardous places.
• To be used for position control.

What does it looks like?

Here below is an image of MOV from Rotork:

Here below is how it is connected to the valve system/pipeline:

How is it connected in the system?

This is a sample wiring of MOV to a master controller:

How does a motor operated valve work?

Here is a short  "Youtube" video from "S4 Samshi" explaining how does the MOV operates.

Several known vendors of MOVs which are are popular in oil & gas industries.

• Emerson
• Rotork
• Flowserve

Hope you like the above post.