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Taps, Branches & Fittings ยท Taps, Branches & Fittings

Round conical tap

High-performance takeoff

ConnectionConical tap
SupportBranch support

Before you start

  • Confirm the conical tap size, cone direction, branch centerline, and airflow requirement.
  • Check the main for seams, joints, reinforcement, and available flange area.
  • Verify the conical body has clearance and will not interfere with another branch.
  • Control the cookie before the final cut.

Tools and materials

Round conical tap, layout template, marker, approved cutting tools, hand seamer, clamps, level, approved fasteners, sealant, branch support, and deburring tools.

Lay it out

  1. Mark the opening from the branch centerline.
  2. Confirm the cone is centered and aligned with the branch route.
  3. Check the full cone body for clearance.

Set and support it

  1. Support the main if the opening or fitting weight could distort it.
  2. Clamp the conical tap flush and square before fastening.
  3. Provide the first branch hanger close enough to remove load from the tap.

Make the connection

  1. 1

    Cut the opening while supporting the cookie.

  2. 2

    Deburr and clean the edge.

  3. 3

    Set the conical tap in place.

  4. 4

    Square the outlet to the branch centerline.

  5. 5

    Clamp the flange flush.

  6. 6

    Install approved fasteners evenly.

  7. 7

    Seal the flange continuously.

  8. 8

    Connect and support the round branch.

Check the install

  • The cone is centered and aligned.
  • The flange sits flush.
  • The outlet remains round.
  • The branch is independently supported.
  • The flange and branch joint are sealed.

Common mistakes

  • Treating a conical tap like a crooked spin-in.
  • Cutting too close to a seam or reinforcement.
  • Pulling the branch sideways into the outlet.
  • Using sealant to fill a bad fit.

Stop and ask

Stop if the conical tap orientation, opening size, branch alignment, or available flange area does not match the approved detail.