Blast Gate Observation Port Threaded In Stock

For Low Pressure Applications Only! (5 PSI or Less)

Fruehauf Viewports Threaded Gate View Ports are available in cast iron, stainless steel, and carbon steel upon request. These viewports feature a stainless steel slide arrangement in the blast gate, providing added protection and extending the lens's life during operation. This design also allows for safer maintenance during vessel downtime.

For additional cooling, a purge connection can be added, positioned on either the glass or vessel side of the blast gate housing. The standard purge is at the 3 o’clock position, with alternative placements available upon request.

Thread sizes range from 2 inches to 6 inches NPT threaded openings.

Standard Glass Options:

• Quartz Clear (Designated by a "Q" in the model number):
  • Maximum intermittent operating temperature: 2048°F
  • Maximum continuous operating temperature: 1600°F (Glass Only)
• Pyrex Clear (Borosilicate Glass, designated by a "P" in the model number):
  • Maximum intermittent operating temperature: 554°F
  • Maximum continuous operating temperature: 446°F (Glass Only)
  • Heat strengthened for safety and coated with a heat-reflecting shield

Custom lenses are available upon request.