RT1000 Tapping Tool
Figure 5 – Measuring 1/8" Offset
2. Unscrew the sleeve back up the bronze barrel until it
stops. Measure the distance from a datum such as
the wrench flats on the feed screw to the end of the
sleeve (Figure 6). Subtract the distance from the
previous step (1) from this distance. The result is
6
3
/
" full stroke. Note that the valve adapter/cutter
4
combinations affects stroke distance. Record the
stroke in the worksheet.
Figure 6 – Measuring Full Stroke Distance
3. Measure the distance from the surface of the pipe to
the outlet end of the valve as shown in Figure 7.
This is the minimum amount of stroke required before
making contact with the pipe. (In the example shown
it is 4
1
/
") Record this dimension in the worksheet. If
2
this distance is within 1" of the stroke distance from
Step 2, then this operation must be aborted and the
Tapping Tool reconfigured for a different valve and/or
saddle.
Figure 7 – Measuring Valve Stand-Off Distance –
4. Measure the distance from the far surface of the pipe
to the outlet end of the valve as shown in Figure 8.
This is the maximum amount of stroke required to
break through the far side of the pipe. (In the example
shown, it is 10
sheet. If this distance is less than the stroke distance
from Step 3 then the Tapping Tool has enough travel
to penetrate the far side of the pipe.
Figure 8 – Measuring Valve Stand-Off Distance –
Ridge Tool Company
Minimum Stroke
1
/
") Record this dimension in the work-
2
Maximum Stroke
7