Operational Instructions; Branch Preparations Before The Hot Tapping; Removing The Insulation; Adjusting The Hot Tap Valve - Metabo BE 1100 Operating Manual

Operating Guide

4. Operational Instructions

4.1 Branch Preparations before the Hot Tapping

Before the drilling process can start, the branch of the decided dimension has be be prepared. Keep in
mind that the branch size should be at least one nominal size smaller than the main line. Always do those
operations according to Danfoss valve data sheet.

4.1.1 Removing the insulation

- If the main line is insulated, remove the insulation and
clean the pipe surface.
- Remove the insulation far enough in order to have
sufficient space for the welding.

4.1.2 Adjusting the Hot Tap Valve

- Adjust the lower end of Danfoss Hot Tap Valve to the round
of the main line using a grinding machine.
- It is important that the valve is handled in a proper way to
prevent grind or other foreign particles to get into to valve.
- The valve has to be fully open during the adjustment.

4.1.3 Welding of the Hot Tap Valve to the Main Line

- The hot tap valve can be welded on to the pipe in
every possible direction, but the angle between the
center line of the main pipe and the valve axis must
be 90°
- Before welding, please check closing mechanism of
the valve.
- During welding the ball valve MUST be open!
- The valve has to be welded on by electric arc
welding.
- Make sure that no particles are entering the valve.
© Danfoss | 2017.06
JIP Hot Tapping Machine
Thread End
Lower end to be adjusted
VI.KD.G1.02 | 9