Round Sight Glass
PN 6, Light construction
For welding, similar to DIN 28120
Observation and illumination of the interior of enclosed vessels (cauldrons, tanks, silos etc.).
Sight glasses consist of round flange mountings to be welded into or onto a vessel, completed by a sight glass plate with appropriate seals.
Flange: 1.4571 (Base flange), 1.4541 (Cover flange)
glass: Borosilicate glass DIN 7080, Soda Lime Glass DIN 8902
Seal: C4400, PTFE, Graphite or according to spec.
Other materials on request
After welding the base flange onto/into the pressure vessel, the sealing surface must be checked for deformations! Reworking may be required!
The operating pressure does not apply to the base flange. The base flange must be audited together with the pressure vessel according to AD 2000 instructions B9 or an equivalent standard!
b) Spray nozzle
c) Double layered glass
d) LED Lights
e) O Ring seal (vacuum capable)
f) Additional options on request
ACI Type 319
Flange 1.4571 / 1.4541 11-319-100-1-1-1-000
For corrosive media or steam, we recommend adding a mica disk to protect the glass.