19
TAPMATE
™
XL-424 Operating Manual
ATTACHING THE TAPMATE XL-424 TO THE VALVE:
The illustrations in this section depict a 6” size-on-size tap using a Romac FTS420 Fabricated Steel Tapping Sleeve, an MJ
by Flange gate valve and the TapMate XL-424 machine with an MJ adapter bell. Regardless of the size tap you're
performing, the steps are the same.
1. Install and assemble tapping sleeve and gate valve per the
manufacturer's instructions. Pressure test the tapping
sleeve and gate valve assembly before beginning the tap.
NOTE:
At this point, you'll take some measurments to
determine the necessary depth of your tap. Record
these measurements, as you'll use these values in
subsequent steps.
2. With the valve gate still closed from the pressure test,
measure the distance from the valve flange face to the
gate (see drawing at left).
3. With the Shell Cutter fully retracted, take the following
measurements (see drawings at left)
• Measure the distance the Shaft Nose/PVC Pilot
extends beyond the Adapter Bell flange.
• Measure the distance that the Shell Cutter extends
beyond the Adapter Bell flange.
• These distance are often different depending on the
tap size and the Adapter Bell.
4. Carefully compare the measurements taken in Steps 2
and 3, to ensure that there will be no interference
between the Shaft Nose / PVC Pilot or Shell Cutter,
and the gate valve when the tap is completed.
Clearance Distance
Pilot Drill
CL
Valve Body
Centerline of the
Waterway
Valve Gate
Distance
Cutter Clearance
Valve
Flange
Face
Tapping Sleeve Neck
Pipe
Extension Distance
Shaft Nose/PVC Pilot
Extension Distance
Shaft Nose/PVC Pilot
MJ Adapter
(without Gasket)
Distance
Cutter's Extension
Flange Adapter
Distance
Cutter's Extension