Penguin Gauge Guard

A gauge guard is used to isolate the internal metal parts of a pressure gauge from the process liquid dirt or corrosive effect.  A large flexible surface diaphragm is used to detect the pressure of the process and will transfer the pressure of the system to the pressure gauge.  A clean fill liquid is used between the gauge and the diaphragm.  The fill liquid is often glycerin, mineral oil or other liquid that will not corrode the internal parts of the gauge and is compatible with the other parts of the guard.  Accuracy is dependent upon the filling procedure and can have less than 1% error in readings.  Normally, the guard is filled and supplied with a gauge however can be furnished without the gauge for an user supplied pressure transducer or gauge.
  • CPVC, polypropylene or PVDF body
  • Viton® diaphragm with ribbed seal ring
  • Bleed plug with O-Ring
  • 1/2" FNPT process connection
  • 1/4" FNPT gauge connection
  • available with gauge 30 - 60- 100 - 160 PSI
  • optional 1/4" FNPT process upon request

penguin gauge guard.JPG (50626 bytes)

  • 7 1/2" high with gauge
  • 2 1/8" diameter gauge face
Material Model Number Pressure Rating
CPVC PGGA 30 0-30 PSI
60 0-60 PSI
polypropylene PGGB
100 0-100 PSI
160 0-160 PSI
PVDF (Kynar) PGGC
no gauge (blank)

Part number example: PGGA030 CPVC guard with 30 PSI gauge

Viton® is a registered trademark of DuPont Dow Elastomers.