How to Verify Proper Swagelok Tube Fitting Installation
Learn how to verify proper installation of a Swagelok® tube fitting using a gap inspection gauge. This video explains how the gauge confirms correct fitting pull-up by checking the gap between the fitting body and nut, helping ensure reliable, leak-tight performance.
Video Transcript
Another question that we’re regularly asked is, “How can we be assured a Swagelok tube fitting has been properly installed?” The way you can do that is by using this Swagelok gap inspection gauge. Because we hold the tolerances so tight on the Swagelok tube fitting, we can predict what the gap between the body hex and the nut is going to be. By using the Swagelok gap inspection gauge, you can check for proper pull-up.
This gauge has three sizes: 1/4 inch, 3/8 inch, and 1/2 inch. By sliding the gauge between the body hex and the nut, it’s a no-go gauge. If it doesn’t go in there, that means the installation has been done correctly. If it does go in, that means additional pull-up is required.
So, by regularly using the Swagelok gap inspection gauge, you can be assured of proper pull-up.
