HPF Inc.

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ISO Rings

The gauge isolation ring is designed to isolate gauges or pressure switches from solids in process flow and to ensure accurate pressure readings. The isolation ring utilizes a specifically designed flush-mounted flexible inner cylinder, behind which is a clean captive liquid. As a process flows through the pipe, it exerts pressure through the flexible cylinder to the captive liquid. Pressure is monitored by the gauge or switch which completely isolated from process flow.
Features and benefits:
Gauge is in contact only with captive liquid and never directly with the process fluid. Isolating the gauge from solids in process flows results in accurate readings. Gauge can be removed for calibration, repair or replacement, without interrupting process flow. Unique flexible cylinder prevents plugging, which means pressure readings are more reliable and accurate. Incidental design eliminate accidental breakage. Adaptable to a variety of process conditions and applications will not clog (which is not true of diaphram seals.)
ISO Ring: Carbon Steel, 316 Stainless Steel
Assembly flanges:
ISO Ring: Carbon Steel, 316 Stainless Steel, CPVC
Iner Flexible Wall
Rubber Seals, PTFE
Captive Sensing Liquid
50% Water / 50% Proylene Glycol
Silicone Oil [FDA Aproved]
Mineral Oil
Distilled Water
2" through 12"

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