Sight glasses are used to observe the interior of an industrial process from outside without coming into contact with the process substances. Double windows are used in many different industries, including food, pharmaceutical, and chemical. Double windows, consisting of two glass panes, are frequently employed in high-temperature applications, such as boiler plants. A borosilicate glass window is often used as the other window, while a soda lime glass window is more susceptible to impact. As it stands, double windows offer improved resistance to thermal shock, as they act as thermal barriers between the two panes of glass.
The pharmaceutical, and chemical industries use double window sight glasses to view the interior without entering it. Double windows are also used in boiler plants that offer thermal shock protection. The main window is made of borosilicate glass, which can withstand high temperatures, while the second is made of soda lime glass, which is more resistant to impact.
Double Window Sight Glass Specifications
| Size | : | Upto 400 NB Depending upon the Type |
| Design Pressure | : | Upto 20 Kg/cm² Depending upon the Type |
| Design Temperature | : | Upto 200°C Depending upon the Type |
| Material of Wetted Parts | : | CI/ ASTMA 216Gr WCB/ ASTMA 351CF8/ ASTMA 351CF8M/ MS/CS/ SS304/SS304L/SS316 L and PP/ HDPE/ PVDF/PFA/ PTFE Lined |
| End Connection | : | Flanged to ASA/ABS/ DIN/JIS/ Screwed BSP/ NPT/Butt Weld |
