10702552 Murphy Temperature Swichgage Model 20BTG-250-25-1/2


20BTG-250-25-1/2: 2″ B-Series Temperature Murphygage®, 130-250°F temp range, 25 ft capillary length. (10702552)

The 20BTG-250-25-1/2 B-Series Temperature Murphygage is a 2” dial (51 mm), high-quality, diaphragm-actuated temperature indicating gage. Built by Enovation Controls with the same heavy-duty design as the standard 20 series and 25 series Swichgage instrument, the B-gage is more compact and is the optimum instrument for gage-only applications. It has a high impact polycarbonate lens, sturdy steel case and a polished, low-profile stainless steel bezel. Accuracy and protection from moderate over-pressure/over-temperature are assured by a unique, unitized diaphragm chamber, superior quality materials and the design of the gage movement. This model features a sealed twenty-five foot (25’) capillary tube, a sensing bulb, and a 130-250°F (54-121°C) temperature range. Pressure changes at the diaphragm convert to accurate mechanical movements that are indicated on an easy-to-read analog dial. A pulsation dampener in the pressure port helps eliminate pointer flutter. It can be removed for cleaning to maintain the gage’s response and accuracy. The B-Series can be utilized in industrial engines and equipment in the oil field, marine, irrigation, construction and trucking industries as well as monitoring engine coolant, crankcase oil and transmission oil.

Estimate available in 28 working days from Italy to Italy

This product may vary on delivery times, as factories do not guarantee production due to lack of raw materials.

Availability: Available on backorder SKU: 10702552 Categories: , Tag:


  • Dial: White on black; U.S.A. standard scale is dual scale °F/°C; others available (see How to Order)
  • Gage Accuracy: Pressure / Vacuum (% of Full Scale):
    • Range ≤ 300 psi (24 bar) Lower 1/4 ± 3% ; Middle 1/2 ± 2% ; Upper 1/4 ± 3%
    • Range 400 psi (28 bar) Lower 1/4 ± 3% ; Middle 1/2 ± 3% ; Upper 1/4 ± 5%
  • Temperature Range: Ambient -40° to 150° F (-40° to 66° C); Process -40° to 250° F ( -40° to 121° C)
  • Maximum Panel Thickness: 1/4 in. (6 mm)
  • Port: Brass
  • Case: Plated steel; mounting clamp included (except for direct mount models)
  • Bezel: Polished stainless steel, standard; optional bezels are available.
  • Pointer: White (black dial); black (white dial)
  • Lens: Polycarbonate, high impact
  • Sensing Element: Beryllium copper diaphragm.


murphy 20BTG-250-20-1-2

murphy 20BTG-250-20-1-2

How to order: 

  • Base Model: 20BTG = Temperature
  • 250 = 130-250 F° (60-121° C)
  • 25 = 25 feet = 7,62 m
  • Adapter Nuts = 1/2
  • Sensing Bulb/Scale/Capillary length Combinations
  • For 20BTG series

murphy 20BTG-250-20-1-2

Additional information

Weight0,5 kg


10702552, 20BTG-250-25-1/2