We offer a complete line of sight glasses (also called sight ports or sight windows) for all vessel, piping, and tank wall applications. Our sight glasses are available in circular, oval, rectangular, DIN and sanitary tri-clamp styles. They are engineered for pressure, pressure-less and ASME code applications. Circular sight windows offered in bolt-on, C-Clamp and weld on connections. Obround sight windows are weld in place style sight windows. Choose the Model KB for weld pad style or a model KB-FT for an ANSI threaded flange mount. Select a Model KB-RF to mount the sight window an existing ANSI flange or pad. The Model KB-WN offers a weld neck style mount. The Model SSTC is a sanitary sight glass using a C-Clamp style design.