Motor operated valve symbol
Also called MOV, Electric actuated valve
A motor operated valve is opened and closed by an electric motor actuator, from the control system or a local push button.
What the motor operated valve symbol means
A motor operated valve is opened and closed by an electric motor actuator, from the control system or a local push button.
How it is drawn
A valve body with a stem rising to a circle with the letter M inside.
The motor operated valve symbol in each standard
Drawn as ISA 5.1 defines it, as on most US and international legends.
ISO 10628-2 does not draw actuators. Actuators come from ISO 14617-4, and how a valve is controlled is shown with the instrumentation, usually to IEC 62424.
German (DIN): Armatur mit Elektroantrieb. See DIN P&ID symbols.
Where you see it on a P&ID
On large isolation valves, remote-operated valves on pipelines and tanks, and where no instrument air is available.
Tag codes
The motor operated valve is commonly tagged:
- MOV
- XV
- HV
Tag formats follow the project numbering procedure. For instruments, the letters follow ISA 5.1, explained on the instrument symbols page.
Related symbols
Frequently asked questions
What does the motor operated valve symbol look like on a P&ID?
A valve body with a stem rising to a circle with the letter M inside.
What is a motor operated valve used for?
A motor operated valve is opened and closed by an electric motor actuator, from the control system or a local push button. You will find it on large isolation valves, remote-operated valves on pipelines and tanks, and where no instrument air is available.
What tag does a motor operated valve have?
It is commonly tagged MOV, XV, HV. The exact tag format comes from the project numbering procedure and the legend sheets.
Is the motor operated valve symbol the same in ISA and ISO?
ISO 10628-2 does not draw actuators. Actuators come from ISO 14617-4, and how a valve is controlled is shown with the instrumentation, usually to IEC 62424. Companies vary the details, so always check the legend sheets at the front of the P&ID set.
What is the motor operated valve called in German?
Armatur mit Elektroantrieb. On a German R&I-Fließschema it is drawn to DIN EN ISO 10628-2.
- In production since 2014
- Thousands of daily users
- On MODEC FPSO projects since 2016