Instrument Gauge Guards
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Griffco diaphragm gauge guards and instrument isolators are designed to enhance the performance of chemical feed systems. The addition of gauges to the system ensure optimal pressures are maintained. Diaphragm isolators protect instruments against chemical attack. Also known as diaphragm isolators.

Instrument Gauge Guards

Instrument Gauge Guards Features

  • Molded Noryl Top
  • 316 SS Gauge Connection
  • Calibration Screw for Zeroing
  • Available with or without Gauge

Griffco Benefits

  • Reliable Instrument Protection
  • Will perform in any position
  • Multiple Diaphragm Options
  • No Metal Fasteners


  • PVC
  • CPVC
  • Polypropylene
  • PTFE
  • PVDF
  • 316L SS


  • Noryl


  • Viton


  • Standard: Viton
  • Optional: PTFE, Hypalon, Kalrez


  • Types: NPT, BSPT, Socket, Union, Flange
  • Sizes: 1/4", 3/8" and 1/2"
  • Gauge Port Size: 1/4"

Maximum Temperature

  • PVC: 140° F (60° C)
  • CPVC & Polypropylene: 190° F (87° C)
  • PVDF: 300° F (150° C)

Gauge Options

  • No Gauge
  • Economy Gauge: Brass Case with Brass Connection
  • Mid-Range Gauge: 304 SS Gauge Case with Brass Connection
  • Premium Gauge: 304 SS Gauge Case with 316 SS Connection, Glycerin Filled

Pressure Range Options

  • 0 - 160 psi (Standard)
  • 0 - 60 psi
  • 0 - 100 psi
  • 0 - 200 psi

Instrument Gauge Guards GG - Data Sheets

TitleDescriptionDate modifiedDownload
Data Sheet GG (US) Imperial09-14-2020 Download

3D CAD Drawings Now Available

Three-dimensional CAD drawings for Instrument Gauge Guards are now available for you to download and use in your pumping system designs.

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