Hot Tapping

Hot Tapping is a means of adding a branch connection to an existing transmission main without a shutdown of service. Below are examples of common tapping method.


Tap Master Inc. - 45 Degree hot tap45° Hot Tap

30" Hot Tap

8x6 Mech. Hot Tap

2" Hot Tap









A tapping outlet and valve is connected to an existing main and pressure tested. A tapping machine is mounted and advanced forward, the hole saw cuts into the line while pressured.

The cutter is retracted while retaining the cut section to the pipe and the hot tapped valve is closed off. The tapping machine is now removed and the valve is ready for service.

  • Straight Tap
  • Angle Tap
  • Elbow Tap