Pressure Gauge Question


Mod Squad
LifeTime Supporter
Jan 17, 2012
Evans, Georgia
hmmmm...well that one you linked to doesnt specifically say its glycerine filled, nor does it read only up to 30 which makes it much more readable when you're old and getting wonky eyes like Skippy has.

Look at these: (there is also a side mount version)

Yippee :flower:


TFP Expert
Apr 29, 2016
Quaker Hill, CT
Glycerin filled gauges dampen the response of the gauge needle to sudden changes in system pressure, pump pulsation, and external vibration. It basically acts like a shock absorber for the gauge needle. The net effect is to prolong the life of the gauge as well as help it maintain it's calibration over time.


LifeTime Supporter
Aug 19, 2014
Pacific NW
Same's a great gauge and coincidentally the bubble from the fluid also happens to be my exact
marks for clean pressure and time to backwash pressure.