Sight Glass available in six standard sizes that provide viewing areas ranging in size from approximately 3″ to 9″ in diameter. The weld-on assembly is designed to provide direct visual inspection of process vessels, separators, silos, pipelines and storage tanks. To illuminate the interior of the vessel, an optional LumiStar Light allows viewing and lighting through the sight glass port, saving the additional expense of a separate light port. Explosion proof lights, see USL05-Ex, and non-explosion proof lights, see USL13, are available as well. For a full selection, see Illumination Sources. To remove condensation and product build-up on the inside of the glass, try this unit in combination with Wiper Type I, Wiper Type II, or a spray nozzle.
Resources
Datasheets
High-Pressure Weld-On Sightglass
Webcasts
How to Ensure Sight Glass Safety
How to Select and Maintain Sight Glasses for Chemical and Pharmaceutical Applications
Manuals
Installation Manual – Models DIN 28120 and Low Pressure
Installation Manual Models DIN 28120 and Low Pressure (Spanish)
Important Guidelines
Sight Glass Application Handbook
Step by Step Guide to Sight Glass Selection
General:
Assembly to the dimensions and constructional guidelines of DIN spec No. 28120 covering sizes DN 50 to DN 200.
Operating Conditions
Standard fittings are available for pressure up to 235 psi (depending on size, higher pressure rating on request). For temperature ratings (depending on material selection) see the following diagram.
Parts and available materials:
Parts and available materials:
Item Part Name Material options
1 Weld Pad 316L SS (ASME Code Grade)
Steel (ASME Code Grade)
2.1, 2.2 Studs/Nuts Steel – 5.6 or 304 SS – A2
3.1, 3.2 Gaskets PTFE (solid Teflon), Klinger C®-4400
- Sight Glass Disc Tempered Borosilicate (280°C max)
- Cover Flange Steel – RST 37.2 or 321 SS
