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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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Description
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GGPD050CP0U
Connection – CPVC – No Gauge – Socket connectors – 1/2″ Gauge Port – Viton Diaphragm – Special to Accommodate XL Non Griffco Gauges
GGU025K11D
Connection – PVDF – Economy Gauge – 160 psi – Viton – Metric Socket Connector – 70/30 Glycerin Filled
GGU050CP0
Connection – CPVC – No Gauge – Viton – 70/30 Glycerin Filled – Socket Connectors
GGU050CP0E
Connection – CPVC – No Gauge -EPDM – 70/30 Glycerin Filled – Socket Connectors
GGU050CP0G5
Connection – CPVC – No Gauge – Socket connectors – 1/2″ Gauge Port
GGU050CP0H
Connection – CPVC – No Gauge – Hypalon – 70/30 Glycerin Filled – Socket Connectors
GGU050CP0T
Connection – CPVC – No Gauge – PTFE – 70/30 Glycerin Filled – Socket Connectors
GGU050CP0TDG5
Connection – CPVC – No Gauge – PTFE – Metric Socket Connection – 1/2″ Gauge Port
GGU050CP0TE
Connection – CPVC – No Gauge – PTFE – 70/30 Glycerin Filled – Socket Connectors – EPDM O-Rings
GGU050CP0TG5
Connection – CPVC – No Gauge – PTFE – Socket connectors – 1/2″ Gauge Port
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