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  • A photograph of front of a red 09831 dry chemical fire extinguisher gauge.
  • A photograph of side of a red 09831 dry chemical fire extinguisher gauge.

Dry Chemical Fire Extinguisher Gauges

Item #: 09831

Normal Availability: 1-2 business days

Product Description

These Bourdon gauges have markings in both psi and kPa. 100 psi (690 kPa) is the green charged zone. The compatibility code on these gauges is M.

These gauges are for use on dry chemical fire extinguishers only. Select from 100, 125, 150, 175, 195, 235, 240, 350 and 360 psi dry chemical gauges.

The Extinguisher Gauge Wrench (item # 09838) makes installation and removal of gauges a snap, even in tight places.

Note: Gauges are calibrated against atmospheric pressure, which is indicated when the gauge reads zero. Thus, a cylinder pressure of 100 psi would move the pointer to 100. If there is a slow leak inside the case, however, and the pressure inside the *gauge* was 100 psi, the gauge would read zero. New gauges such as these have pressure relief devices which relieve case pressure at 50 psi or less. There are many ways of creating leaks and leaks are not the only things that cause gauges to give false readings, so care should be used when installing them.

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