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Murphy Pressure Guage
The Murphy Swichgage 0-50 PSI Mechanical Pressure Gauge 2" with High/Low Contacts and Knob Adjusting Face Contact A20P-HLK-50 is a diaphragm-actuated, pressure-indicating gage with a built-in electrical switch for tripping alarms and/or shutdown devices. The gage pointer acts as a pressure indicator and as one switch pole which completes a circuit when it touches the adjustable limit contact. Contacts have self-cleaning motion to ensure electrical continuity.

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