OVERVIEW :: MODEL 23 :: MODEL 23 DS :: MODEL 23 A :: MODEL 23 XL :: MODEL 45 :: MODEL 45 A ::MODEL 45 XL :: MODEL 59 :: DIMENSIONAL CHART :: MAINTENANCE & INSTALLATION
SAF Viewports units are for use in low-pressure applications (5 PSI) where 100% shutoff is not required. When the vessel has a deeper wall thickness, a longer “E” dimension is available. If a special “E” dimension is required, the unit can be modified to accommodate the specification.
The operating environment and heat should be considered when ordering type of steel and glass.
| Model Number | Material | Viewing Area | A | B | C | E | F | G | H | I |
| 45XL | Cast Iron | 4-1/2" X 5-1/2" | 6-3/4" | 9-1/2" | 11-1/4" | 9-1/2" to 20" | 3-1/2" | 9-3/4" | 8" | 8-3/16" |
NOTE: Table Represents Standard Materials Available. Please Contact Us To Discuss Custom Options.
- Standard units available in Cast Iron , Carbon Steel, and Stainless Steel
- Available with either clear borosilicate lens or clear quartz lens
- E-dimension inside the fixture can be extended up to 20″
- Custom Options
- Machine modifications to suit specific requirements.
- Addition of high-temperature sealant to enhance pressure seal.
- Increase size of purge hole to allow more air flow.
- Adapt shutter with special pattern of holes to increase cooling.
Glass Options
| Type | Thickness | Max. Intermittent Temperature | Max. Continuous Temperature | Code Letter |
| Quartz Clear | 5 7/8” x 4 7/8” x ¼” thick | 2048 °F / 1120 °C | 1600°F / 871 °C | Q |
| Borosilicate Clear | 5 7/8” x 4 7/8” x ¼” thick | 554°F / 290 °C | 446°F / 230 °C | B |