1- Locate the installation point and make sure that the pipe's external surface is fully clean and does not have any faults or carvings in the O-ring contact area. Place the O-ring in the right position into the clamp saddle.

2- Place the lower part of the clamp saddle (i.e. the base) in the chosen point. Couple the upper part of the clamp saddle (i.e. the branch) with the lower one.

3- Insert the screws from the bottom (the blind part of the clamp saddle, i.e. the base, has appropriate holes for the head screws). Screw the nuts and tighten the bolts diagonally.

4- Drill a hole in the pipe wall being careful not to damage the clamp saddle screw thread and the O-ring. Use a spacer to avoid drilling the other side of the pipe.

Alternative method :

1- Mark with a white indelible pen some reference lines on the pipe to place the clamp saddle in the same position again. Disassemble the clamp saddle.

2- Drill the hole in the pipe wall and remove the scraps. Assemble the clamp saddle according to the marked lines; to keep the hole in axis with the branch direction it can help to use a pin, such as the drill used to make the hole.