PEX go no go gauge.....

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dougle

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I'm having trouble understanding this gauge. The no go part would indicate that the ring was compressed too much? Correct? Why would that fail? damaged the pex tubing?.......
 

hj

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The "no go" means it was NOT compressed enough, i.e., it is larger than the standard calls for. If it were overcompressed (which would be difficult to do unless the tool was seriously worn), it would still fit inside the "go" gauge.
 

ShockHazard

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If the fitting is too small, it is overtightened. Some tools are adjustable. I imagine it means the ring is close to breaking or the pex is squished. Either way, they should come out perfect every time.
 

hj

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Because the tool goes metal to metal when it tightens, the metal jaw would have to be eroded in order to make the opening smaller and allow overcompression. If that occurs, it is time to scrap the tool anyway.
 
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