Gauge & Instrument Guards

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

Available Sizes

1/4″, 3/8″, and 1/2″ (NPT, BSPT, Socket, Union, Flange)
Gauge Port Size: 1/4″

Connections – Sizes: 1/4″, 3/8″, and 1/2″
Maximum Temperature – PVDF: 300°F (150°C)
Pressure Range Options – 0-60 psi to 0-200 psi

3D CAD Drawings Available

Instrument Gauge Guards

Features

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

Gauge Options

No Gauge
0 – 160 psi (Standard)

Economy Gauge
Brass Case w/Brass Connection
0 – 60 psi

Mid-Range Gauge
304 SS Gauge Case w/Brass Connection
0 – 100 psi

Premium Gauge
304 SS Gauge Case w/316 SS Connection
(Glycerin Filled)
0 – 200 psi

Griffco Benefits

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

Wetted Materials

PVC (Max Temp: 140°F / 60°C)
CPVC (Max Temp: 190°F / 87°C)
Polypropylene (Max Temp: 190°F / 87°C)
PTFE
PVDF (Max Temp: 300°F / 150°C)
316L SS
Alloy 20

Top
Noryl®

O-Ring
Viton®

Connections
Standard: Viton®
Optional: PTFE, Hypalon®, Kalrez®

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DESCRIPTION

DATE MODIFIED

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Instrument Gauge Guards GG – Data Sheets
Data Sheet GG (US)	Imperial	09-14-2020

Image	Product	Description
GG025P38TXL	1/4″ Gauge Guard – PVC – 4″	Premium Gauge – 15 psi – PTFE Diaphragm – 70/30 Glycerin Filled
GG025P48TXL	1/4″ Gauge Guard – PVC – 4″	Premium Compound Gauge – Hg Vac 30/0/15 psi – PTFE Diaphragm – 70/30 Glycerin Filled
GG025P22TM	1/4″ Gauge Guard – PVC – Back	Mount Mid Range Gauge – 60 psi – PTFE – 70/30 Glycerin Filled
GG025P23TM	1/4″ Gauge Guard – PVC – Back	Mount Mid Range Gauge – 100 psi – PTFE – 70/30 Glycerin Filled
GG025P46	1/4″ Gauge Guard – PVC – Compound	Gauge – 30/0/30 psi – 70/30 Glycerin Filled
GGPD025P42	1/4″ Gauge Guard – PVC – Compound	Premium Gauge 30-0-60 psi – Viton – 70/30 Glycerin Filled
GG025P11	1/4″ Gauge Guard – PVC – Economy	Gauge – 160 psi – Viton – 70/30 Glycerin Filled**
GG025P12	1/4″ Gauge Guard – PVC – Economy	Gauge – 60 psi – Viton – 70/30 Glycerin Filled
GG025P12T	1/4″ Gauge Guard – PVC – Economy	Gauge – 60 psi – PTFE – 70/30 Glycerin Filled
GG025P13	1/4″ Gauge Guard – PVC – Economy	Gauge – 100 psi – Viton – 70/30 Glycerin Filled

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