Taps & Takeoffs · Taps & Takeoffs
Top-mounted rectangular tap
Top of rectangular main
ConnectionFlanged/screwed tap
SupportOverhead branch support
Before you start
- Confirm top-panel strength, tap size, vertical branch route, overhead clearance, and support.
- Check for reinforcement, seams, and nearby hangers.
- Verify the top panel will not bow under the fitting.
- Support the cookie before the final cut.
Tools and materials
Top-mounted rectangular tap, cutting tools, clamps, square, level, fasteners, sealant, vertical branch support, and deburring tools.
Lay it out
- Mark the opening on the top panel.
- Confirm vertical branch plumb line.
- Keep clear of reinforcement and hangers.
Set and support it
- Support the main locally if required.
- Clamp the tap flush.
- Install overhead branch support.
Make the connection
- 1
Cut while controlling the cookie.
- 2
Deburr and clean the opening.
- 3
Set the tap flush.
- 4
Square the vertical throat.
- 5
Clamp and fasten evenly.
- 6
Seal the perimeter.
- 7
Connect and support the vertical branch.
Check the install
- The top panel does not bow.
- The branch is plumb.
- The flange sits flat.
- The branch is independently supported.
Common mistakes
- Cutting into an unsupported top panel.
- Using the branch as a lever.
- Skipping overhead branch support.
- Fastening a tap that rocks on a crossbreak.
Stop and ask
Stop if the top panel lacks reinforcement for the fitting size or the vertical branch cannot be independently supported.