Model 23 A

SAF Viewports units are for use in low-pressure applications (5 PSI) where 100% shutoff is not required. The “E” Dimension of these units is cut on a thirty-degree angle providing a different viewing aspect inside the vessel. The Model 23 A unit has a viewing area of 2-3/4″ by 3-1/2″. For a larger angular unit, see Model 45 A.

The operating environment and heat should be considered when ordering type of steel and glass.

Model 23A
Model NumberMaterialViewing AreaABCDEFGI
#23A

  • Cast Iron

  • Stainless Steel

4-1/2"x5-1/2"4-1/2"7-1/2"9-1/2"7-3/4"6-1/4"6-1/2"6"6"

NOTE: Table Represents Standard Materials Available. Please Contact Us To Discuss Custom Options.

  • 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