Vacuum Sight Glass
Sight Glass Flanges with welding neck are suitable for welding on pipes, boilers, tanks and devices of all kinds. They can be installed wherever visual observation of filling processes or flows is desired. Equally suitable for liquids and gases, they are especially recommended for special constructions in several applications.
Flange: S235JRG2, 1.4571
Glass: Borosilicate glass (max. 280°C), Soda Lime Glass (max. 150°C)
Other materials on request
ACI Type 390V
For corrosive media or steam, we recommend mica disks to protect the glass!