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Temperature Murphygage 320F w/ 18 Ft Capillary A20TG-OS-320-18-1/2

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Mechanical 160-320F Temperature Murphygage 2 in. without Contact - Oil Sealed - A20TG-OS-320-18-1/2 by Murphy

Product Condition: NEW
Mechanical 160-320F Temperature Murphygage with 18 Ft Capillary and Polycarbonate Case A20TG-OS-320-18-1/2
Estimated ship date: for orders by 3pm PT/6pm ET today Available for back order.

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The Mechanical 160-320F Temperature Murphygage 2" Oil Sealed with 18 Ft Capillary A20TG-OS-320-18-1/2 by Murphy is diaphragm-actuated, temperature-indicating gage without contacts/switch. This rugged, built-to-last instrument is fully sealed from the environment by the unique combination of a polycarbonate case and lens, a polished stainless steel bezel and O-ring seals. This vapor actuated gauge features 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.

Applications for A20 series temperature swichgage instruments include: engines and equipment in oil field, marine, irrigation, construction and trucking industries. Monitoring engine coolant temperature, crankcase oil and transmission oil.



  • 2 inch/51 mm dial
  • O-ring Seals
  • Polished Stainless Steel Bezel
  • Corrosion Resistant Polycarbonate Case
  • Indicating Gage
  • OS = Oil sealed (Silicone Oil)
  • Gage-only model without contacts



  • Part No.: A20TG-OS-320-18-1/2
  • Range: 160 to 320°F (71 to 160°C)
  • Adapter Nut: 1/2-14 NPT
  • Dial: White on black
  • Case: Glass filled/Polycarbonate, corrosion-resistant; steel mounting clamp included
  • Bezel: Polished stainless steel
  • Pointer: Tempered nickel silver; red tip
  • Lens: Polycarbonate, high-impact
  • Sensing Element: Beryllium copper diaphragm
  • Sensing Bulb: Copper
  • Capillary: PVC armored copper; 18 ft.
  • Sensing Bulb: Copper
  • Gage Accuracy: 160 to 320°F (71 to 160°C) Temperature Range; ± 10°F (± 5.2°C) Lower 1/3 of Scale; ± 5°F (± 2.4°C) Middle 1/3 of Scale; ± 5°F (± 2.4°C) Upper 1/3 of Scale
  • Maximum Temperature: 370°F (192°C)
  • Standard Settings: 300°F (149°C)
  • Unit Weight: 11.9 oz. (0.370 kg)
  • Unit Dimensions: 4-3/4 x 4-3/4 x 3 in. (121 x 121 x 76 mm)

Additional Information

Product Condition NEW
upc No

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