NIBCO INC. WORLD HEADQUARTERS • 1516 MIDDLEBURY ST. • ELKHART, IN 46516-4740 • USA • PH: 1.800.234.0227
TECH SERVICES PH: 1.888.446.4226 • FAX: 1.888.336.4226 • INTERNATIONAL OFFICE PH: +1.574.295.3327 • FAX: +1.574.295.3455
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8
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Step 5
Use the go/no-go gauge to check every crimp joint. An improper crimp has been formed when (1) the “go” side does not fit over the ring
or, (2) the “no” side does fit over the ring. If the joint fails either of these two tests then cut out the joint and return to Step 1.
CRIMP GAUGE
No-go
No-go No-go
Go
Go
Go
BAD CRIMPS
Ring is compressed
too much.
Ring is not
compressed
sufficiently.
No
Go
Go
A micrometer can be used to measure the correct
dimensions of a crimp ring after a proper, single
crimp per the following table:
Tube Size Min Max
3/8” 0.580” 0.595”
1/2” 0.700” 0.715”
3/4” 0.945” 0.960”
1” 1.175” 1.190”
1-1/4” 1.430” 1.445”
GOOD CRIMPS
Ring is properly
compressed.
Does not fit in
“No-Go” slot.
Ring fits in
“Go” slot.
No
Go
Go
AND
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