Things You'll Need
PEX tubing
PEX fitting
PEX crimp ring
PEX crimping tool
Go/No-Go gauge
The PEX plumbing system is an innovative way of installing plumbing in residential and commercial applications. A combination of PEX fittings, crimp rings, PEX tubing and a PEX crimping tool are required during an installation. A Go/No-Go gauge is included with every crimping tool sold. It is a flat piece of metal with a few cut-outs on each side. One side is the "Go" side; the other side is the "No-Go" side. Use both sides to see if you crimped each fitting into place correctly.
Step 1
Place a crimp ring over the PEX tubing and insert a PEX fitting. Slide the crimp ring so it is 1/8-inch from the end of the tubing right next to the PEX fitting.
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Step 2
Use a PEX crimper to crimp the ring into place over the PEX tubing.
Step 3
Slide the "Go" side of the gauge over the crimped ring. If the crimp was made correctly, the gauge will pass over the ring with not problems.
Step 4
Turn the gauge over and try to pass the "No-Go" side of the gauge over the crimp ring. The crimp ring should be unable to enter the gauge at any point on the "No-Go" side of the gauge.
Step 5
Cut the PEX fitting out and replace it with a new crimp ring and fitting if the crimp ring fails either test.
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