A20T-220-6-1/2 Temperature Swichgage® (10703140)

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SKU: A20T-220-6-1/2 (10703140)

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Current Stock: 2

A20T-220-6-1/2: 2" Temperature Swichgage®; Polycarbonate case; 130-220°F temp range; 6 ft capillary length (10703140)

The A20 Series (2 inch/51 mm dial) Swichgage models are diaphragm-actuated, temperature-indicating gages, with built-in electrical switches for tripping alarms and/ or shutdown devices. 
All models of these rugged, built-to-last instruments are fully sealed from the environment by the unique combination of a polycarbonate case and lens, a polished stainless-steel bezel and O-ring seals.
These vapor/pressure actuated gages feature a sealed capillary tube and a sensing bulb. When subjected to heat, the liquid in the sensing bulb changes to vapor creating pressure against a diaphragm mechanism. The diaphragm translates this vapor pressure into a mechanical gage reading.

For series A20T the gage pointer acts as a temperature indicator and as one switch pole which completes a circuit when it touches the adjustable limit contact. Contact(s) are isolated from ground. They have a self-cleaning motion to enhance electrical continuity.

Applications for the A20 Series temperature Swichgage instruments include engines and equipment in the oil field, marine, irrigation, construction and trucking industries, monitoring engine coolant temperature, crankcase oil, transmission oil.


  1. Sales Bulletin
  2. Installation Instructions
  3. Sensing Bulb/Scale/Capillary Length Combinations
  4. Thermowell Specifications

MurCal is an Authorized Distributor of Murphy by Enovation products.
MurCal provides experienced application and product support, before and after the sale.

For California customers: Prop 65 WARNING: This product may have been manufactured with or uses components that can expose you to chemicals which are known to the State of California to cause cancer. For more information go to www.p65warnings.ca.gov

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