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NIBCO INC. WORLD HEADQUARTERS • 1516 MIDDLEBURY ST. • ELKHART, IN 46516-4740 • USA • PH: 1.800.234.0227
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A H E A D O F T H E F L O W
®
Crimping a NIBCO Press System Fitting or Valve
1. Make sure that the battery is removed or that the cord is unplugged on the
pressing tool prior to attaching or changing the adapter jaw.
2. Select the correct size pressing chain. Pull the pin on the chain which allows
the segments to open. Position the chain on the raised bead and wrap the chain
around the fitting with the "pipe side" designation facing the tube. When the
chain is fully wrapped around the fitting, reinsert the pin to secure the chain
on the assembled joint. Visually inspect the mark made for insertion depth, to
ensure the tube remained in position
(Figure 6)
.
Figure 6: Placement of the pressing chain onto fitting or valve
3. Release the pin (push and twist) on the jaw holder of the pressing tool, and
install the adapter jaw on the tool. Return the pin to its original position, secur-
ing the jaw. The red sleeve on the tool must be in the back position to allow for
crimping sizes 21/2”, 3” and 4”
(Figure 7)
.
Figure 7: Placement of adapter jaw into the tool
4. Squeeze adapter jaw arms to open the jaw. Rollers must be fully retracted
to open the adapter jaw. Place the open adapter jaw into the grooves in the
pressing chain and let go of the jaw arms (Figure 8).
Figure 8: Placement of adapter jaw into pressing chain
5. Make sure the tubing is inserted to the proper depth in the fitting or valve, and
that the tube and fitting or valve are aligned properly.
6. With the pressing tool perpendicular to the tube, begin the pressing cycle by
pulling the trigger of the pressing tool.
7. Keep the trigger depressed from the time the cycle begins and the rollers con-
tact the jaw arms until the end of the entire cycle. Remove the pressing tool
and adapter jaw from the pressing chain. Remove the pressing chain from the
fitting.
If the tool displays an LED flash or emits an audible alarm, please refer to the
toolinstruction manual for troubleshooting suggestions.
CAUTION:
Avoid sharp edges that may have formed on the fitting during
the crimping operation.
Inspecting the Crimp
1. Inspect the crimped fitting or valve to ensure proper crimp. The final crimp
should appear pressed uniformly around the fitting or valve
(Figure 9)
.
Figure 9: Inspection of final crimp
NOTE: The use of the NIBCO Press System chain will produce a unique witness mark “N”.
2. Inspect the crimped fitting checking the connection for the following problems:
• Not fully inserted tube, double check depth marks
• Incorrect chain alignment with the fitting contour
If any problems are found, a new section of tubing and a new fitting will need
to be prepared, installed, and crimped.
3. Test the NIBCO Press System in accordance with crimp integrity testing instruc-
tions for fittings and valves in this catalog.
NIBCO
®
Press System — Installation Instructions
Revised 11/9/2017
CAUTION:
NIBCO press fittings and valves
(2½”, 3”, 4” ends) to be installed
ONLY
with:
• NIBCO PC-100 and PC-280 pressing tools
• NIBCO PC-5 adapter jaw
• NIBCO pressing chain - 2½” (PC-2),
3” (PC-3), 4” (PC-4)
