Branch outlet symbol
Also called Olet, Weldolet, Sockolet, Threadolet
A branch outlet, often called an olet, is a fitting welded onto the run pipe to take a smaller branch, instead of a tee.
What the branch outlet symbol means
A branch outlet, often called an olet, is a fitting welded onto the run pipe to take a smaller branch, instead of a tee.
How it is drawn
A small fitting on the run pipe with the branch leaving it. The exact mark varies by project and type.
Isometric SVGWhere you see it
Small branches, instrument connections, vents and drains on larger lines.
What is written next to it
On the isometric, the branch outlet usually carries an item number and the run and branch sizes.
What gets checked on site
For a branch outlet, the site checks usually cover the weld to the run pipe and the branch connection. 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 branch outlet symbol look like?
A small fitting on the run pipe with the branch leaving it. The exact mark varies by project and type.
Where is a branch outlet used?
Small branches, instrument connections, vents and drains on larger lines.
- In production since 2014
- Thousands of daily users
- On MODEC FPSO projects since 2016