Gate valve symbol
Also called Isolation valve
A gate valve opens or closes the line fully. On an isometric the stem shows which way the handwheel points.
What the gate valve symbol means
A gate valve opens or closes the line fully. On an isometric the stem shows which way the handwheel points.
How it is drawn
The two-triangle valve body between two flanges, with the stem and handwheel.
Isometric SVGWhere you see it
Isolation of equipment, branches and line sections.
What is written next to it
On the isometric, the gate valve usually carries the valve tag from the P&ID and an item number in the bill of materials.
What gets checked on site
For a gate valve, the site checks usually cover the tag and orientation, bolting, and that it is open or closed as the test plan says. Each check is recorded against the line and the joint, so the line can go into its test pack and be handed over with its evidence. See the ITR guide.
Related symbols
Frequently asked questions
What does the gate valve symbol look like?
The two-triangle valve body between two flanges, with the stem and handwheel.
Where is a gate valve used?
Isolation of equipment, branches and line sections.
- In production since 2014
- Thousands of daily users
- On MODEC FPSO projects since 2016