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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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GGU050P13TZ
Connection – PVC – Economy Gauge – 100 psi – PTFE – Threaded connectors
GGU050P13XL
Connection – PVC – 4.5″ Economy Gauge – 100 psi – Socket Connectors
GGU050P13Z
Connection – PVC – Economy Gauge – 100 psi – Threaded connectors
GGU050P14
Connection – PVC – Economy Gauge – 200 psi – Socket connectors
GGU050P14T
Connection – PVC – Economy Gauge – 200 psi – PTFE – Socket connectors
GGU050P14TD
Connection – PVC – Economy Gauge – 200 psi – PTFE – DN15 (20mm) Socket Connectors
GGU050P14TE
Connection – PVC – Economy Gauge – 200 psi – PTFE – Socket connectors – EPDM O-Rings
GGU050P14TM
Connection – PVC – Economy Back Mount Gauge – 200 psi – PTFE – Socket connectors
GGU050P14TZ
Connection – PVC – Economy Gauge – 200 psi – PTFE – Threaded connectors
GGU050P21
Connection – PVC – Mid Range Gauge – 160 psi – Viton – 70/30 Glycerin Filled – Socket Connectors
146474867