The devices in the sight glass assembly series are used for visual indication of liquid media.

The sight glass assembly consists of a borosilicate glass sight tube, four spacer elements, and two connection flanges.

Due to the simple construction, the device is maintenance-free. Thanks to externally positioned radial seals, there are no cross-sectional restrictions and therefore no pressure loss.

Suitable media include water, oil, alkalis, or acids. With appropriate material selection, the sight glass assembly can also be used with aggressive media.