Hydraulic Pressure Gauge Leaking Glycerin
Hydraulic Pressure Gauge Leaking Glycerin
(OP)
Quick (amateur, I know nothing about hydraulic gauges) Question:
I have been shipped 5 hydraulic stainless steel pressure gauges from GDG.
2 of them have leaked a small amount of glycerin that was inside them. There is still more than 50% glycerin inside the gauge.
1. Will the loss of fluid affect the accuracy of the gauges?
2. Why did it leak? it appears to have come out the bottom. There is a small grub screw in the base of the valve where it connects to the pressure line. Should this grub screw have been screwed in or out for transit? And what position should it be in when fitted? It appears to leak glycerin when I screw it out slightly, but it is hard to tell.
Many thanks in advance.
I have been shipped 5 hydraulic stainless steel pressure gauges from GDG.
2 of them have leaked a small amount of glycerin that was inside them. There is still more than 50% glycerin inside the gauge.
1. Will the loss of fluid affect the accuracy of the gauges?
2. Why did it leak? it appears to have come out the bottom. There is a small grub screw in the base of the valve where it connects to the pressure line. Should this grub screw have been screwed in or out for transit? And what position should it be in when fitted? It appears to leak glycerin when I screw it out slightly, but it is hard to tell.
Many thanks in advance.





RE: Hydraulic Pressure Gauge Leaking Glycerin
Some gauges do not have a vent but have a flexible diaphragm in the case (like the plastic face plate). The case should not be completely filled with glycerine. High pressure gauges are not much affected by a few psi of case pressure.
RE: Hydraulic Pressure Gauge Leaking Glycerin
Mike Halloran
Pembroke Pines, FL, USA