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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
Copper Crimp Ring System
• Proven system for over 30 years
• Available in 3/8", 1/2", 5/8", 3/4", 1",
and 1-1/4"
• Go/No-Go Gauge
• 25-year system warranty
Making the Connection with the Large Crimp Tool
Note: Use the crimp tool only to install PEX tube/fitting systems meeting ASTM F1807 for brass or copper insert fittings and
F2159 for plastic insert fittings.
Important: Always refer to the tube manufacturers’ product assembly instructions when using the crimp tool.
1/8¨ to 1/4¨
Crimp Ring
Spacing
Fitting
Shoulder
Variation in ring diameter (out-of-round) should not exceed 0.006".
6. Measure the crimped ring with Zurn “Go/No-Go” gauge. See
table below. Do not measure bumps on ring where jaws met.
If “Go” on gage does not fit, or if “No-Go” does fit, then cut out
connection, replace fitting and ring, adjust and calibrate the
tool, and recrimp.
Standards
By NSF International as meeting the following standards:
• ASTM F877
• ASTM F1807
• CAN/CSA B137.5
• NSF Standard 14
1. Measure and cut the tube. Be sure you have a square burr-free
cut. An uneven or jagged cut may cause an improper connection.
2. Next, slip a copper crimp ring onto the tube. Do not use
hose clamps!
3. Now insert the fitting into the tube up to the fitting shoulder.
Position the crimp ring 1/8 inch to 1/4 inch from the end of
the tube. An improperly positioned ring may produce a weak
connection. Ring may be squeezed to hold it in place until
step 4 is completed.
4. Position the tool so the crimp ring is completely covered by the
tool jaws. Keep the tool at a 90° angle to the fitting and close it
completely. Squeeze handles together to complete the crimp.
5. Open the tool handles to release jaws from the crimped fitting.
The following dimensions are the ASTM maximum and minimum
crimped ring diameters for crosslinked polyethylene (PEX) pipe
installations.
Standard Tube Size > 3/8" 1/2" 3/4" 1" 1-1/4"
Minimum Diameter 0.580" 0.700" 0.945" 1.175" 1.430"
Maximum Diameter 0.595" 0.715" 0.960" 1.190"
1.445"
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