DIN 28120
Round sight glasses according to DIN 28120 are used for the reliable visual monitoring of fill levels and processes in containers and equipment. The standardized round glass panes are inserted into suitable sight glass fittings and are designed for use in pressure vessels.

max. 16 bar

heat-resistant up to 243°C

for liquid media

for gaseous media

Frame sizes up to
Ø 275 mm

Custom-made products possible

>50 sealing materials

Accessories available
Technical data:

Operating pressure
10 / 16 bar
Base frame
1.4404 / 1.4571 / 1.4435 / 1.4462 / 1.4541 / 1.4306 / 1.4539 / 2.4602 Hastelloy C22
On request with APZ DIN EN 10204-3.1
Cover flanges
1.4306 / 1.4404 / 1.4541 / 1.4571
On request with APZ DIN EN 10204-3.1
Sight glass disc
Borosilicate glass according to DIN 7080 up to 243°C
also with a wiper up to 6 bar
Bolts / Nuts
Stud bolts: DIN 938 and nuts: ISO 4032 A2-70 or A4-70
Gaskets
PTFE, EPDM, Klingersil® C-4400, Reinz AFM 34, Silicone, Garlock GYLON®
Available with USP Class VI certification on request
*Other available on request
01
Decades of experience in plant engineering
02
Precision “Made in Germany”
03
Tailor-made special solutions
04
Reliable under pressure and temperature
05
Compatibility with common standards and norms
06
Fast availability and short delivery times









