Solenoid valve symbol
Also called SOV
A solenoid valve is opened or closed by an electromagnetic coil. It is either fully open or fully closed, and is often used to vent or supply air to a larger valve actuator.
What the solenoid valve symbol means
A solenoid valve is opened or closed by an electromagnetic coil. It is either fully open or fully closed, and is often used to vent or supply air to a larger valve actuator.
How it is drawn
A valve body with a stem rising to a square with the letter S inside.
The solenoid 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): Magnetventil. See DIN P&ID symbols.
Where you see it on a P&ID
On shutdown valve actuators, small utility lines, sampling and dosing.
Tag codes
The solenoid valve is commonly tagged:
- XY
- SOV
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 solenoid valve symbol look like on a P&ID?
A valve body with a stem rising to a square with the letter S inside.
What is a solenoid valve used for?
A solenoid valve is opened or closed by an electromagnetic coil. It is either fully open or fully closed, and is often used to vent or supply air to a larger valve actuator. You will find it on shutdown valve actuators, small utility lines, sampling and dosing.
What tag does a solenoid valve have?
It is commonly tagged XY, SOV. The exact tag format comes from the project numbering procedure and the legend sheets.
Is the solenoid 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 solenoid valve called in German?
Magnetventil. On a German R&I-Fließschema it is drawn to DIN EN ISO 10628-2.
- In production since 2014
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