GLASS-TO-METAL SEALS

Sight Glasses

Process monitoring without reliability concerns.

The Dietze Group’s hermetic sight glasses commonly serve as level indicators or as visual inspection windows. A wide variety of housing shapes can be manufactured with optional flanges and threads.

The glass can be shaped in various prism forms (e.g. circular prism) to enable measurements with optical instrumentation. Tailored toward refrigeration applications we are certified according to the directives PED 97/23/EC and AD 2000.

For hermetic sapphire windows, please also see our hermetic sensor packages info page.



Key features:

  • Hermetic sight glasses using glass-to-metal sealing
  • Housing geometry and optional thread customizable
  • Carbon-steel and stainless-steel housing options
  • Various surface plating options
  • Customized glass shapes
  • Optional float indicator and frost shield
  • Operation pressure higher than 100 bar
  • Certified according to PED 97/23/EC and AD 2000