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20V-25V-A20V-A25V SERIES VACUUM SWICHGAGE
SWICHGAGE AND MURPHYGAGE INSTRUMENTS

Swichgage instruments are high-quality diaphragm-actuated, dial gauges for various with built-in electrical switches. 

Used for tripping alarms and/or shutdown devices, the pointer acts as both an indicator and as one switch pole which completes a circuit when it touches the adjustable limit contact. 

Contacts have a self-cleaning motion to ensure electrical continuity. 

More compact, gauge-only models without contacts (known as Murphygage instruments) are also available.


20V / 25V / A20V / A25V SERIES VACUUM SWICHGAGE


The 20 Series (2 inch/51mm dial) and the 25 Series (2 1/2 inch/64mm dial) Swichgage instruments are diaphragm-actuated, vacuum-indicating gages with built-in electrical switches. These switches are used for tripping alarms and/or shutdown devices.

Commonly used to measure loading of spark-ignition engines through intake manifold vacuum, the gages also can serve as Overspeed protection from a sudden loss of load on these engines. Use anywhere the vacuum source is compatible with port materials.




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