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 | Material V | Viewing Area | A | B | C | D | E | F | G | H | I |
| #23XL | Cast Iron | 2-3/4" x 3-1/2" | 4-5/8 | 6-1/2" | 9-1/2" | 7-3/4 | 9-1/2" | 3-1/2" | 6" | 5-5/8" | 6-1/8" |
NOTE: Table Represents Standard Materials Available. Please Contact Us To Discuss Custom Options.
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- Machine modifications to suit specific requirements.
- Addition of high-temperature sealant to enhance pressure seal.
- Increase the size of purge hole to allow more airflow.
- Adapt shutter with special pattern of holes to increase cooling.
- The operating environment and heat should be considered when ordering type of steel and glass.
Glass Options
| Type | Thickness | Max. Intermittent Temperature | Max. Continuous Temperature | Code Letter |
| Quartz Clear | 3 3/16” x 4 3/16” x ¼” thick | 2048 °F / 1120 °C | 1600°F / 871 °C | Q |
| Borosilicate Clear | 3 3/16” x 4 3/16” x ¼” thick | 554°F / 290 °C | 446°F / 230 °C | B |