BXpanded pressure check gauge has air bubble

[pjoh784350]

Is it normal to have an air bubble in a liquid filled gauge? Will that affect the readings?

 

[Dave_eng]

Yes bubble normal and no it does not affect its accuracy.
Dave

 

[SidecarFlip]

Glycerin filled gauges are that way to dampen needle vibrations and they all have a bubble and most will have a fill port at the top as well.

 

[Kennyd4110]

100% normal, just google "liquid filled gauge" and look at all the pics.

 

[North Idaho Wolfman]

Like everyone else has said, perfectly normal!
The reason for the small amount of air is for thermal expansion of the fluid, if it was completely full it would damage the gauge when the fluid expanded.

 

[pjoh784350]

Thanks everyone!