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 DIN 7080 (max. 280°C), Soda Lime Glass DIN 8902 (max. 150°C), Quartz Glass (max. 500°C, Special construction)
Seal: C4400, Graphite, PTFE, NBR, Viton
Other materials on request
Mounting the Sight Glass will influence the vessel mechanically. This has to be considered during design according to AD 2000 instruction B9!
ACI Type 390
Borosilicate glass 11-390-100-2-1-1-000
Observe the Pressure-Temperature ratings according to DIN EN 1092-1!
For steam or corrosive media we recommend mica disks!