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.
Leak Checks: Using a High Pressure Gauge. Leak checks determine if the propane piping system is suitable for service and must be performed on the vapor distribution piping system immediately after turning on the gas in a new gas system or a system that has been restored after an interruption of service.