Ball valve symbol
A ball valve opens and closes with a quarter turn of a ball with a hole through it. It gives tight, fast isolation with little pressure drop.
What the ball valve symbol means
A ball valve opens and closes with a quarter turn of a ball with a hole through it. It gives tight, fast isolation with little pressure drop.
How it is drawn
The two-triangle valve body with an open circle in the middle.
Variants
- With an actuator: actuated ball valve or shutdown valve
The ball valve symbol in each standard
Drawn as on most US-style legend sheets.
Valve, ball type. The triangles stop at a circle in the middle instead of meeting at a point.
ISO SVG
German (DIN): Kugelhahn. See DIN P&ID symbols.
Where you see it on a P&ID
On isolation duties in oil, gas and utility lines, and as the body of many on/off shutdown valves.
Tag codes
The ball valve is commonly tagged:
- HV
- XV when actuated
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 ball valve symbol look like on a P&ID?
The two-triangle valve body with an open circle in the middle.
What is a ball valve used for?
A ball valve opens and closes with a quarter turn of a ball with a hole through it. It gives tight, fast isolation with little pressure drop. You will find it on isolation duties in oil, gas and utility lines, and as the body of many on/off shutdown valves.
What tag does a ball valve have?
It is commonly tagged HV, XV when actuated. The exact tag format comes from the project numbering procedure and the legend sheets.
Is the ball valve symbol the same in ISA and ISO?
No. The triangles stop at a circle in the middle instead of meeting at a point. The ISO 10628-2 registration number is X8071. Always check the legend sheets at the front of the P&ID set.
What is the ball valve called in German?
Kugelhahn. 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