• Murphy

L129 Series

The L129 Series Lube Level Swichgage instrument is a combination lube level indicating gage and adjustable low and high limit switches.

It provides protection against low oil level or high level caused by overfill or fuel or water seepage into the crankcase. A 6-3/4 inch (171 mm) deep sight gage allows you to check the condition and level of your oil without shutting down the equipment. Fingertip adjustable limit contacts, through 4-7/8 inch (122 mm) range, make it simple to set high and low limit contacts. When properly installed and maintained, the L129 Series Lube Level Swichgage can monitor and protect engines and pumps from improper lubrication level, which can result in extensive damage. The L129 Series is recommended for engines and pumps with larger crankcase capacity. Although designed primarily for stationary engines, the L129 Series is often used in mobile applications such as marine, rail and some large off-highway trucks.

  • CE (European Conformity) mark
Specifications Downloads How to Order
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Specifications Drawer: 
  • Case: Die-cast aluminum
  • Lens: Tempered glass
  • Maximum Working Pressure: 10 psi (68.9 kPa)
  • Process Connection: 1/2 NPT
  • Float Material: Brass
  • Contact Rating: 2 A @ 30 VAC/DC, pilot duty
  • Shipping Weight:
    • L129: 3 lb. (1.4 kg)
    • L129CK1: 3 lb. 9 oz. (1.6 kg)
  • Shipping Dimensions (both models): 12 x 4-1/2 x 4-3/4 in. (305 x 114 x 121 mm)

WARNING: This product can expose you to chemicals including lead, which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information about California Propsition 65, go to www.P65Warnings.ca.gov or visit our California Proposition 65 page.

Additional product documentation can be found on our product support website or by clicking the Help Center button above.

Primary Method - Table: 
Part NumberModelDescription
15700104L129Designed for grounded, low voltage electrical systems
15700107L129CK1Designed for applications requiring a three-wire, above ground electrical circuit
15000888Repair KitFull repair kit for L129 (less castings and glass assembly) for date code T2 and later
15000480Lens & Bezel KitBezel, glass and gasket set for date code W7 and later
15000485Lens KitGlass and gasket set for all date codes
15050241Restrictor PlugRestrictor plug for all date codes