Model 23

SAF Viewports units are for use in low-pressure applications (5 PSI) where 100% shutoff is not required. The Model 23 Basic Unit is made of a cast iron body and assembled with suitable glass and gaskets for its operating environment. Model No. 23 is available in cast iron and stainless steel.

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

ModelMaterialViewing AreaABCDEFGHI
#23

  • Cast Iron

  • Stainless Steel

2-3/4" x 3-1/2"4-5/8"6-1/2"9-1/2"7-3/4"3-1/8"3-1/2"6"5-5/8"6-1/8"

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