Looking for an industrial sight glass that's cost-effective and easy to install? Our Model S Flange sight glass combines the lowest cost on the market with the ease of installation and handling associated with our premium models. It's perfect for less challenging applications that don't require enhanced sealing performance or in-situ maintenance features. The glass and flange assembly is bonded into a single piece, making it easy for a single technician to install without having to touch or center the glass window.

Our Model S Flange sight glass mounts to standard ASME B16.5 (2, 3, 4, 6, and 8 inch) flanges and is rated for service at up to 450F (232 C) and at 150 PSI ratings. The selection menu on this page will show you all of the glass and metal options, and give you technical information you need in PDF documents. What's more, our Model S Flange industrial sight glass is made in the USA, so you can trust its quality and durability.