The vacuum leak tester KVLD-3000 is a simple, precise method of testing tubes in boilers, condensers, an d heat exchangers. It is the fastest, most accurate means of locating leaky tubes for plugging or replacement.
Powered by compressed air the vacuum leak detector pulls a vacuum in a tube to a desired reading on a gauge. A steady reading on the gauge would indicate that the tube doesn’t leak. If the reading on the gauge drops you have pinpointed the leaking tube.