DIN28120 Sight glass assembly with bolt ring.
This very commonly used assembly is comprised of a welded body flange and accessories fixed to it, glass, gaskets and studs as well as nuts. There are diverse uses in the process industry, such as reactors, tanks, filters etc.
Body flange material options: Carbon steel, 1.4541,1.4571,1.4404
Cover flange: Carbon steel or 1.4541
Glasses: SODALIME (150°C),BORO(280°C)
Gaskets: C4400, EPDM, VITON, PTFE
Size: DN40 ... DN300
Accessories: Wipers (SW), Cleaning nozzle (SPR), Glass protective films (Mica)
Material certificates available for order. Can be supplied with different configurations, e.g. without body flange. Also suited for explosive atmospheres, no ignition source inside.