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Murphy Liquid Level Swichgage L150

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Murphy Liquid Level Swichgage - L150

Product Condition: NEW
Murphy Level Swichgage L150

Availability: In stock


SSL Cerficate

The Murphy Liquid Level Swichgage L150 instrument is a combination liquid level gauge and low limit switch; each unit includes (1) a chamber with pivotal float, (2) an indicating dial with pointer, and (3) a low level contact. When properly installed and maintained, the float operates the pointer which, in turn, both indicates level during normal operation, and closes a switching circuit if the level falls to the low-limit set point. The L150 features a field adjustable set point. The unit can be mounted away from the engine for protection from vibration and extreme heat. The set point can be adjusted at any time.

The primary use of L150 is for engine cooling systems, surge or expansion tanks, condenser radiator or vapor phase systems, pressurized or atmospheric systems. The Level Swichgage instrument can also be used to monitor lube oil, hydraulic fluid or diesel fuel reservoirs and activate alarms and/or shut-down at a predetermined minimum level. This instrument is built for low pressure systems with a maximum of 25 psi (172 kPa) [1.72 bar].


  • Indicating Gauge
  • Low Limit Switch
  • Float Operated
  • Monitors Level of Coolant, Lube Oil, Diesel Fuel And Hydraulic Fluid



  • Part No.: L150
  • Case: Die cast aluminum, poly-urethane coated; approximate dimensions; 4-1/2 x 4-3/4 x 2-3/4 in. (114 x 121 x 70 mm)
  • Mounting Holes: (2) 9/32 in. (7 mm) diameter at 4-1/2 in. (114 mm) on center
  • Float: Brass
  • Lens: Polycarbonate
  • O-rings: Saturated Nitrile, are suitable for coolant or hydrocarbons. Maximum temperature 250°F (121°C)
  • Gasket: Nitrile
  • Vent Tube: 1/4 x 5 in. (6 x 127 mm) copper cane with 1/4 NPT x 1/4 in. (6 mm) tube fitting
  • Contact Rating: 2 A @ 30 VAC/DC
  • Wire: (1) 16 AWG x 26 in. (1.5 mm2 x 660 mm) with terminals
  • Shipping Weight: 29 oz. (0.82 kg.)
  • Shipping Dimensions: 5-1/4 x 5-1/4 x 5-1/2 in. (133 x 133 x 140 mm)

Additional Information

Product Condition NEW
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