Circular sight glass fitting type 320 DIN 28120 PN 10/16For welding in or on according to DIN 28120 USAGE Round sight glass fittings serve to observe and illuminate the interior of closed containers (boilers, tanks, silos, etc.). Sight glass fittings of type 320 according to DIN 28120 are round flange mountings for welding in or on, completed with a sight glass plate placed between the seals and firmly screwed in place. After welding the base flange, it must be checked whether the sealing surface has warped. If necessary, it must be reworked! Also, pay attention to the specified tightening torques for the bolting! The operating pressure does not apply to the base flange; it must be checked together with the pressure device according to AD2000 Leaflet B9! DRAWING Materials 2) Mandatory acceptance according to EN 10204 - 3.2 10112025 - Subject to technical changes and errors!

Circular sight glass fitting type 320 DIN 28120 PN 10/16For welding in or on according to DIN 28120 DN 10112025 - Subject to technical changes and errors! 6

Circular sight glass fitting type 320 DIN 28120 PN 10/16 Type320 PRODUCTCODE Example for Explaining the Code Composition GROUP TYPE 1) Borosilicate glass according to DIN 7080 or similar 2) Soda-lime glass according to DIN 8902 or similar 4) Borosilicate glass2 + PTFE wiper SGW 5) Borosilicate glass2 + silicone wiper SGW 6) Soda-lime glass3 + PTFE wiper SGW 7) Soda-lime glass3 + silicone wiper SGW 8) Unhardened borosilicate glass G00) Borosilicate glass2 + mica protection S00) Spray device V00) Vacuum D00) Double glazing 1) Cover flange according to quote / order confirmation EXAMPLE STRUCTURE...

Circular sight glass fitting type 320 DIN 28120 PN 10/16 QUICK OVERVIEW Custom designs available Accessories available OPERATING CONDITIONS The operational conditions depend on the choice of glass and gaskets: Quartz glass Borosilicate glass untempered Borosilicate glass (DIN 7080 or similar) Soda-Lime Glass (DIN 8902 or similar) Sight glass

Circular sight glass fitting type 320 DIN 28120 PN 10/16For welding in or on according to DIN 28120 Type OPTIONAL ACCESSORIES Metal fused safety sight glass > for safety applications 10112025 - Subject to technical changes and errors! > up to 320 °C with Borosilicate glass DIN 7080 > with PTFE, silicone, EPDM or FKM wipers PLEXIGLAS Impact protection window

Circular sight glass fitting type 320 DIN 28120 PN 10/16For welding in or on according to DIN 28120 Type OPTIONAL ACCESSORIES FEP protective screen / coating > with PTFE or silicone wiper > from high-quality stainless steel of grade 1.4571 P Konigskamp 19 • 52428 Julich • Germany 10112025 - Subject to technical changes and errors!