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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″

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

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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GG050P24T

Gauge – 200 psi – PTFE – 70/30 Glycerin Filled

GG050P24TB

Gauge – 200 psi – PTFE – BSP Threads – 70/30 Glycerin Filled

GG050P25

Gauge – 300 psi – 70/30 Glycerin Filled

GG050P25T

Gauge – 300 psi – PTFE – 70/30 Glycerin Filled

GG050P0

Viton

GG050P0FG5

Viton – Flanged – 1/2″ Gauge Port

GG050P0G5

1/2″ Gauge Port

GG050P0H

Hypalon

GG050P0HG5

Hypalon – 1/2″ Gauge Port

GG050P0T

PTFE

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