Leak Testing (LT)/Vacuum Box

Bubble leak testing relies on the visual detection of a gas leaking from a pressurized system

Bubble leak testing, as the name implies, relies on the visual detection of a gas (usually air) leaking from a pressurized system. Pressurized parts/systems can be tested by spraying a soap solution to the surface that creates fine bubbles to the area being tested if there is a leak. For flat surfaces, the soap solution can be applied to the surface and a vacuum box can be used to create a negative pressure from the testing side. If there are through leaks, bubbles will form, showing the location of the leak.

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