Des-Case Oil Level Indicators


SKU: DC-OLIX Category:


The Des-Case Oil Level Indicator (OLI) provides a visual gauge for the oil level inside large tanks, gearboxes, and reservoirs. The OLI is a clear acrylic tube with 1/2″ NPT threads at each end. Red and green level marker stickers are included for marking upper and lower limits. The OLI is available in multiple lengths, and custom lengths are available by contacting us.

Data Sheet

Features and Options

  • Lengths ranging from 3″ to 30″ (contact us for lengths over 15″ or custom lengths)
  • Brass fittings standard (for lengths 15″ and above)
  • Made of stain-resistant acrylic
  • Can be topped with a Des-Case ND-2 breather, 0.3μ absolute (ß0.3≥1000, breather and coupler sold separately)

Operating Conditions

  • Temperature range: -40˚F to 200˚F (-40˚C to 93˚C)
  • Maximum pressure: 65 psi (4.48 bar)
  • Chemically compatible with all mineral and synthetic oils


Part NumberDescriptionOverall Length (in/cm)Diameter of Acrylic (in/cm)
DC-OLI33" OLI - 1/2" MNPT X 1/2" MNPT3/7.620.875/2.223
DC-OLI66" OLI - 1/2" MNPT X 1/2" MNPT6/15.240.875/2.223
DC-OLI99" OLI - 1/2" MNPT X 1/2" MNPT9/22.860.875/2.223
DC-OLI1212" OLI - 1/2" MNPT X 1/2" MNPT12/30.480.875/2.223
DC-OLI1515" OLI - 1/2" MNPT X 1/2" MNPT15/38.100.875/2.223

Additional information

Weight N/A
Dimensions N/A