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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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GGU050P0TG5
Connection – PVC – No Gauge – Socket connectors – PTFE – 1/2″ Gauge Port
GGU050P0TT
Connection – PVC – PTFE – No Gauge – Socket connectors – EPDM Internal O-Ring and PTFE Encapsulated Union Connection O-Ring
GGU050P0Z
Connection – PVC – No Gauge – Threaded connectors
GGU050P11
Connection – PVC – Economy Gauge -160 psi – Socket connectors
GGU050P11T
Connection – PVC – Economy Gauge – 160 psi – PTFE – Socket connectors
GGU050P11TE
Connection – PVC – Economy Gauge – 160 psi – PTFE – Socket connectors – EPDM O-Rings
GGU050P11TQ
Connection – PVC – Economy Gauge -160 psi – PTFE – HDPE Socket End
GGU050P12T
Connection – PVC – Economy Gauge – 60 psi – PTFE – Socket connectors
GGU050P13T
Connection – PVC – Economy Gauge – 100 psi – PTFE – Socket connectors
GGU050P13TE
Connection – PVC – Economy Gauge – 100 psi – PTFE – Socket connectors – EPDM O-Rings
145464767