1. Field of the Invention
This invention relates to a leak tester, and more particularly to a pneumatic leak tester particularly suitable for detecting leak defects in pipes.
2. Description of the Prior Art
The conventional leak detectors or testers which are arranged to check for leak defects by connecting pipes to the tester serially have a common problem in that it takes a long time for the inspection, particularly in a case where a great number of pipes have to be examined.