What the Libra zodiac sign is all about: Libra is the seventh of the 12 zodiac signs, which begins its cycle in early fall every year during Libra seasonâwhich falls around September 23-October 22.
How it works. This schematic shows the component parts of a typical leak-down tester. The gauge on the right is held at a standard pressure by adjusting the pressure regulator while the gauge on the left shows an example reading of 85-or 15% leakage.
HOW DOES ADVANCED TEST FOR A LEAK. For water lines, there is a simple two step test. First a pressure gauge is attached to a spigot and the spigot is opened. As long as all water use is stopped, the gauge will show the pressure at which water is delivered from the street.