Shopping Cart: $0.00

Murphy 160-320F Cylinder Head Temperature Swichgage 2" with 4 Ft Capillary 20TH-F-320-4-M10

More Views

Murphy 160-320F Cylinder Head Temperature Swichgage 2 in. with FS Contact, 4 Ft Capillary and Plated Steel Case - 20TH-F-320-4-M10

Product Condition: NEW
Murphy 160-320F Cylinder Head Temperature Swichgage 10 mm x 1.5 with FS Contact, 4 Ft Capillary and Plated Steel Case 20TH-F-320-4-M10
Estimated ship date: for orders by 3pm PT/6pm ET today Available for back order.

SSL Cerficate

The Murphy 160-320F Cylinder Head Temperature Swichgage 2" with FS Contact, 4 Ft Capillary and Plated Steel Case 20TH-F-320-4-M10 is a diaphragm-actuated, temperature-indicating gage with built-in electrical switch for tripping alarms and/or shutdown devices. The gage mechanism is enclosed in a steel case coated to resist corrosion. A polycarbonate, break-resistant lens and a polished, stainless steel bezel help protect this rugged, built-to-last instrument. This vapor actuated gage 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 the diaphragm mechanism. The diaphragm translates this vapor pressure into a mechanical gage reading.

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 grounded through the Swichgage case. This gage has a self-cleaning motion to enhance electrical continuity. For use on Air Cooled engines.



  • 2 inch/51 mm Dial
  • Steel Case Coated to Resist Corrosion
  • Polycarbonate, High-Impact Lens
  • Polished Stainless Steel Bezel
  • Combination Indicating Gage and Limit Switch
  • Switch Can Activate Alarms and/or Shut Down Equipment
  • Contact Grounds Through Case
  • F = “FS” contact (includes “ES” as appropriate)


  • Part No.: 20TH-F-320-4-M10
  • Range: 160-320°F (71-160°C)
  • Metric: 10 mm x 1.5
  • Dial: White on black; U.S.A. standard scale is dual scale °F/°C
  • Case: Plated steel; mounting clamp included (except for direct mounting models)
  • Bezel: Polished stainless steel
  • Pointer: Tempered nickel silver
  • Lens: Polycarbonate, high-impact
  • Sensing Element: Beryllium copper diaphragm
  • Capillary: PVC armored copper; 4 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)
  • Adjustable Limit Contact: SPST contact; pilot duty only, 2 A @ 30 VAC/ VDC; Ground path through encasement. Normally Closed (NC) when the high limit is met.Normally Open (NO) when pointer is in normal operating range. Contacts are gold flashed silver.
  • Limit Contact Adjustment: by a 1/16 in. hex wrench thru 100% of the scale
  • Limit Contact Wire Leads: 18 AWG (1.0 mm2) x 12 in. (305 mm)
  • Unit Weight: 12.7 oz. (0.39 kg)
  • Unit Dimensions: 4-3/4 x 4-3/4 x 2-3/4 in. (121 x 121 x 70 mm)

Additional Information

Product Condition NEW
upc No

Customer Reviews

Write Your Own Review

Only registered users can write reviews. Please, log in or register