Valves, Piping, Flowmeters & Controls

Gauge Isolators

Chemline SI Series Gauge Isolators allow inexpensive pressure gauges, or any other pressure instrument to be used in corrosive services. The upper chamber (gauge side) is filled with a stable fluid such as glycerin‡. A diaphragm separates it from the lower chamber which receives the media under pressure.

The 1/2" gauge connection allows use of the popular 4" and 4-1/2" diameter gauges. A customer can easily fill an isolator and install his own gauge.

Isolate Pressure Instruments from Corrosive Media
Teflon ® Diaphragm

PVC, PP, PVDF
Series:	SI
Inlet Connection:	1/2" Threaded†
Instrument Connection:	1/4" or 1/2" Threaded
Diaphragm:	Teflon®

Optional Gauge - Isolators are available alone or with gauge mounted and pre-filled with glycerin‡.

Features:

Easy to Mount Gauges
• It is easy to fill an isolator and field mount a gauge. No special equipment is required.
• Will accept popular 4" and 4-1/2" diameter gauges.

High Chemical Resistance
• A large choice of body materials is available for a wide range of applications.
• Teflon® PTFE bonded Hypalon dished diaphragm for high chemical resistance and sensitivity.

Heavy Duty Design for Safety
• Stainless steel fasteners.
• Heavy wall connection ports.

A    PVC isolator with 4" gauge.
B    PVDF isolator with 4-1/2" gauge.
C    PVC isolator with 2" gauge.
D    PP isolator with pressure transmitter.

† Other available inlet connections are 1/4" threaded, 1/2" socket or 1/2" to 1" flanged.
‡ Other fluids are available for special applications such as chlorine service.

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