Better yet, do you need it? If you have a dry watch, don't panic! Venting is strictly used for liquid-filled pressure gauges. As discussed when choosing a liquid vs dry pressure gauge, there are many advantages to the correct use of liquid gauges in specific applications. When choosing the correct liquid-filled pressure gauge, you also need to remember another key detail.

　　In this blog, we will delve into how to properly empty a liquid-filled Glycerine-filled manometer and how to determine which filling plug is best for your operation.

　　Why vent a pressure gauge filled with liquid?

　　Pressure gauges with a full-scale range of 300 PSI and below need to be vented to ensure the accuracy of Vacuum pressure gauge Manufacturers' pressure gauges. Without proper venting, the level gauge will display inaccurate results. The pressure gauge filled with liquid needs to be vented after installation to prevent the liquid from leaking out during transportation.

　　Temperature fluctuations during installation or transportation may cause the liquid to expand or contract. This will shake the pressure inside the case, which may cause the pointer to not be emptied properly until the pressure gauge is properly vented.