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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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GGU050K33TDTI
Connection – PVDF – Premium Top Mount Gauge – 100 psi – PTFE – 20 mm Metric Union Socket Connectors – PTFE O-Ring
GGU050K33XL
Connection – PVDF – 4″ Premium Gauge – 100 psi – 70/30 Glycerin Filled
GGU050P0
Connection – PVC – No Gauge – Socket connectors
GGU050P0E
Connection – PVC – No Gauge – EPDM – Socket connectors
GGU050P0G5
Connection – PVC – No Gauge – Socket connectors – 1/2″ Gauge Port
GGU050P0Q
Connection – PVC – No Gauge – 19 mm HDPE Socket Ends
GGU050P0T
Connection – PVC – PTFE – No Gauge – Socket connectors
GGU050P0TB
Connection – PVC – No Gauge – PTFE – 20 MM Socket connectors
GGU050P0TBG5
Connection – PVC – No Gauge – BSP Connectors – PTFE – 1/2″ Gauge Port
GGU050P0TE
Connection – PVC – PTFE – No Gauge – Socket connectors – EPDM Internal and Union Connection O-Rings
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