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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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GG050S31FA
Ashcroft Premium Gauge – 160 psi – Flanged – 70/30 Glycerin Filled
GGS050S62T
15-60 Pressure Switch – PTFE – 70/30 Glycerin Filled
GG050S29XL
Mid-Range Gauge – 5000 psi – 70/30 Glycerin Filled
GG050S31TXL
Premium Gauge – 160 psi – PTFE – 70/30 Glycerin Filled
GG050S31XL
Premium Gauge – 160 psi – 70/30 Glycerin Filled
GG050S33TF1"XL
Premium Gauge – 100 psi – 1″ 150# Flange – 70/30 Glycerin Filled
GG050S33TF3/4"XL
Premium Gauge – 100 psi – 3/4″ 150# Flange – 70/30 Glycerin Filled
GG050S33TXL
Premium Gauge – 100 psi – PTFE – 70/30 Glycerin Filled
GG050S21TXL
Range Gauge – 160 psi – PTFE – 70/30 Glycerin Filled
GG050S21XL
Range Gauge – 160 psi – 70/30 Glycerin Filled
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