15700135 – Murphy Liquid Level Swichgage – L150


The Murphy Liquid Level Swichgage L150 instrument is a combination liquid level gauge and lowlimit switch; each unit includes (1) a chamber with pivotal float, (2) anindicating dial with pointer,and (3) a low-level contact. When properly installed and maintained, the float operates the pointerwhich, in turn, both indicates level during normal operation, and closes a switching circuit if the levelfalls to the low limit set point. The L150 features a field adjustable set point. The unit can be mountedaway from the engine for protection from vibration and extreme heat. The set point can be adjustedat any time.The primary use of L150 is for engine coolingsystems, surge or expansion tanks, condenser radiatoror vapor phase systems, pressurized or atmospheric systems. The Level Swichgage instrument canalso be used to monitor lube oil, hydraulic fluid or diesel fuel reservoirs and activate alarms and/orshutdown at a predetermined minimum level. This instrument is built for low pressure systems witha maximum of 25 psi (172 kPa) [1.72 bar].

Estimate available in 20 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: 4 in stock (can be backordered) SKU: 15700135 Categories: , Tags: ,



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

Product specifications:

  • Part No.: L150
  • Maximum Temperature: 250° F (121° C)
  • Maximum Operating Pressure: 25 PSI (172 kPa)
  • Case: Die cast aluminum, polyurethane 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 temperature250°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 660mm) 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)

Product specifications:

Before freezing comes, check to be sure tour L150 or EL150 Series, coolante level switchage is filled with antifreeze solution the same as your engine block and radiator.

Hot to Order the singular parts are subject to separate quotation:

Parts NumberModel and DescriptionNotes
15700138All parts except case and bodyL150 Repiar Kits
15700135All parts except case and bodyEL150k1 Repair Kits
15000100Lens / switch assemblyEL150K1 Repair Kits
15000109Switch / terminal assembly
15000107Radiator fitting (PS), thin wall, 1/4 in. (6 mm) tube fitting
15010202Radiator fitting (PS-D), for diesel or oil, think wall (to 1/4 in [6 mm]), accepts 1/2 in. (13 mm) I.D. hose or 1/4 in. (6 mm) O.D. tubingAccessories
15010167Radiator fitting (PS Barbed), thin wall, 1/4 in. (6 mm) tubing or hoseAccessories

Additional information

Weight0,82 kg

approximate dimensions; 4-1/2 x 4-3/4 x 2-3/4 in. (114 x 121 x 70 mm), Die cast aluminum, Polyurethane Coated







Max Temp


Mounting Holes

(2) 9/32 in. (7 mm) diameter at 4-1/2 in. (114 mm) on center


Saturated Nitrile, are suitable for coolant or hydrocarbons

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


(1) 16 AWG x 26 in. (1.5 mm2 x 660 mm) with terminals



15700135, L150