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 an unloader valve work? A: An unloader valve works by diverting water flow into a bypass as soon as a trigger gun valve is closed. These two valves work together to create a unique system that directs water into a float tank or a pump inlet.