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ZURN PEX, INC.
HIGHWAY 11 EAST, COMMERCE, TEXAS, U.S.A. 75428 • PHONE: 855-ONE-ZURN (855-663-9876) • FAX: 903-886-2583 • www.zurn.com
Zurn PEX
®
Plumbing Installation Guide
Adjusting the Large Crimp Tool
Using the Zurn Go/No-Go Gauge
Zurn Crimp Tools are factory set to provide proper crimps. This
should be checked before use by making a test crimp connection
and checking it with the crimp gauge. As long as the finished crimp
connection gauges properly, there is no need to adjust the tool.
1. Loosen the bottom Locking Setscrew two turns using the hex
wrench provided with the tool.
2. Close the tool until the jaws just touch and increased resistance
is felt. This is the pre-load point.
3. Turn the top Adjusting Setscrew until the distance between
the raised “+” marks on the handles is between 7 and 8-1/2
inches for QCRT2T, 3T, JT, and 4T. The distance for QCRT5T
should be 13 inches. Tighten the bottom Locking Setscrew.
See Warning for QCRT2T, 3T, JT, 4T, and QCRT5T tool.
4. Make a test crimp connection and check it with the “Go” and
“No-Go” openings of the gauge. If the “No-Go” opening goes
over the crimped ring, the tool is too tight. The distance between
the “+” marks should be decreased. If the “Go” opening does not
go over the crimped ring, the tool is too loose and the distance
between the “+” marks should be increased.
5. Apply a light oil to the pivot points each time the tool is adjusted.
Failure to lubricate the tool will shorten its life.
WARNING:
Increasing the pre-load distance beyond 9 inches for the QCRT2T, 3T,
JT, 4T or 13 inches for the QCRT5T will make the tool hard to use
and shorten tool life because of excessive stress.
QCRT2T, 3T, JT, 4T
After making a crimp connection,
use the appropriate opening of
this flat “Go/No-Go” Gauge to
check your finished crimp. The
“Go” opening should go freely
across a crimped ring anywhere
on its diameter with the possible
exception of the upset area on
the ring surface caused by the
tool jaws closing. Do not force the gauge across the ring. The “No-
Go” opening should not go across a crimped ring anywhere. If the
crimp fails either test, cut out the fitting and replace.
Always place the gauge opening on the
crimp ring at a 90° angle for an accurate
check.
Be certain to use the gauge opening sized
for the diameter of your tube.
We recommend you check every finished
crimp with this gauge.
Do not slide the gauge onto the connection.
Push it directly onto the crimp ring.
Do not try to save time by recrimping a crimp
that does not gauge properly. The fitting must
be cut out and replaced.
Do not modify the gauge opening for any
reason. They have been carefully
manufactured to .002-inch tolerance.
DO NOT:
DO:
