Our Des-Case Oil Sight Glasses (OSG) include an innovative white bottom to dramatically increase the visibility of oil contaminants that harm equipment. The drain port configuration allows some models to drain water properly whether the sight glass is in a vertical or horizontal orientation. With the indication marks on the side of the bottle, you can quickly and easily monitor the rate of water accumulation. The OSG is available in multiple size and connection options, as well as in high-temperature variations. Contact us to include an optional magnetic drain valve to capture ferrous particles for analysis.
Data Sheet
Features and Options
- 1/4″, 3/8″, and 1/2″ hex nipples
- 1oz and 3oz sizes
- Transparent polyamide construction
- Large 16oz and 32oz sizes available in acrylic
- Standard or high-temperature styles
- Standard style 1oz and 3oz sizes can orient horizontally as well as vertically
- Brass fittings (hex nipple and drain valve)
- Contact us for stainless steel fittings or to include a magnetic drain valve for collecting ferrous material
Operating Conditions
- Temperature range for standard OSG: -40˚F to 200˚F (-40˚C to 93˚C)
- Temperature range for high-temperature OSG:
- -40˚F to 450˚F (-40˚C to 232˚C) at 9 psi (0.62 bar)
- -40˚F to 300˚F (-40˚C to 148˚C) at 65 psi (4.48 bar)
- Maximum pressure: 65 psi (4.48 bar)
- Chemically compatible with all gear and mineral oils and most synthetic oils
Solutions for Oil Inspection and Contamination Detection
| Part Number | Description | Length (in/cm) | Outside Diameter (in/cm) |
| DC-OSG1X250 | 1 oz. X 1/4" | 3.0/7.62 | 1.72/4.37 |
| DC-OSG1X375 | 1 oz. X 3/8" | 3.0/7.62 | 1.72/4.37 |
| DC-OSG1X500 | 1 oz. X 1/2" | 3.0/7.62 | 1.72/4.37 |
| DC-OSG3X250 | 3 oz. X 1/4" | 3.15/8.0 | 2.50/6.35 |
| DC-OSG3X375 | 3 oz. X 3/8" | 3.15/6.35 | 2.50/6.35 |
| DC-OSG3X500 | 3 oz. X 1/2" | 3.15/6.35 | 2.50/6.35 |
Large Volume Acrylic OSGs
| Part Number | Description |
| DC-OSG16X500 | 16 oz. X 1/2" |
| DC-OSG32X500 | 32 oz. X 1/2" |
High Temperature Oil Sight Glasses
| Part Number | Description |
| DC-OSG1X250HT | 1 oz. X 1/4" NPT High Temperature |
| DC-OSG1X375HT | 1 oz. X 3/8" NPT High Temperature |
| DC-OSG1X500HT | 1 oz. X 1/2" NPT High Temperature |
| DC-OSG3X250HT | 3 oz. X 1/4" NPT High Temperature |
| DC-OSG3X375HT | 3 oz. X 3/8" NPT High Temperature |
| DC-OSG3X500HT | 3 oz. X 1/2" NPT High Temperature |
