OVERVIEW :: MODEL 11 :: MODEL 11DS :: MODEL 12 :: MODEL 14 :: MODEL 15 :: model 16 :: MODEL 20 ::
DIMENSIONAL CHART :: MAINTENANCE & INSTALLATION
Saf-T-Eye® observation ports are available in three different sizes and a variety of styles.
All models are made of cast iron except Model 16 (Angular), which is carbon steel. Some units are also produced in stainless steel. Both the shutter and protective screen are stainless steel. Additional information can be found on the individual model.
The Saf-T-Eye® Observation Ports enable the operator to safely and clearly inspect the interior. Adjustments can be made under actual operating conditions without combustion or air infiltration. Four types of glass are available for a variety of viewing conditions. High and Low temperature glass, as explained below, is protected by the stainless steel screen and stainless shutter. The viewing is done by pulling handle down; when finished release handle and shutter closes automatically. Glass can be cleaned and removed quickly by using wing nuts.
Each unit includes a 1/4″ NPT purge hole for adding cooling capabilities with air or nitrogen. Sealant can be added to improve the seal in low-pressure applications. All Saf-T-Eye® observation ports are provided with a mounting flange gasket that fits securely between the unit and the vessel wall. All configurations of the Saf-T-Eye® units are available in cast iron and stainless steel (except for the Model 12 (Angular) and 16, which is carbon steel) from stock. Fabrication in other metals for specific applications is available upon request.
STANDARD OR PRESSURE-TITE
The Pressure-Tite Saf-T-Eye®, designated by a “PT” in the model number, has been sealed with a high-temperature sealant between the components of the body and frame to prevent air leakage when used in a low-pressure application. A mounting flange gasket is provided for installation between the unit and the furnace wall. The unit is equipped with a 1/4″ NPT purge hole to run air or nitrogen for cooling of the port. If 1/4″ NPT hole is not sufficient, it can be replaced with a 1/2″ NPT hole.
The Saf-T-Eye® comes in two models: Standard or Pressure Tite. A mounting flange gasket is provided for installation between the unit and the furnace wall. The unit is equipped with a 1/4″ NPT purge hole to run air or nitrogen for cooling of the port. It can be replaced with a 1/2″ NPT hole.
GLASS TYPES AVAILABLE
Quartz Clear – Designated by a “Q” in the model number. Maximum intermittent operating temperature is 2048°F. Maximum continuous operating temperature is 1600°F (Glass Only)*.
Pyrex Clear – (borosilicate glass) Designated by a “P” in the model number. Maximum intermittent operating temperature is 554°F. Maximum continuous operating temperature is 446°F (Glass Only)* . Glass is heat strengthened for safety and is coated with a heat reflecting shield.
*Note: The iron or steel bodies have different maximum temperature than the viewing glass.