TAPMATE
™
XL 424 OPERATING MANUAL
18
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
measurements to determine the neces-
sary depth of your tap. Record these measure-
ments, as you'll use these values in subsequent
steps.
2. With the Valve Gate still closed from the pres‑
sure test, measure the distance from the Valve
Flange Face to the Gate
(see fig. 32)
.
3. With the Shell Cutter fully retracted, take the
following measurements
(see fig. 33).
• 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.
NOTE: These distances are often different de‑
pending 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
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:
fig. 31
fig. 32
fig. 33
