vetrolux sightglass discs to din 8902 and to din 7080 the glass discs are sized for being mounted into standard circular sightglass fittings to din 28120 / 28121 or similar, circular sightglass fittings for pn 0 (lightweight version) and also for use in screwed sightglass fittings similar to din 11851. The glass discs with central bore hole ø 10. 5 mm have the same application as the above, but may be fitted with the centrally operated wipers of the series w / wd.
the glass plates are sized to be mounted into the rectangular or d-ended sightglass fittings lsg (r,rr) / rsg ( r,rr) operating conditions:
nominal pressure: rated to the din standards. Versions with central bore hole for wiper application on request.
temperatures:
maximum 150°c for sodium silicate glass to din 8902 (discs)
maximum 280°c for borosilicate glass to din 7080 (discs)
maximum 150°c for sodium silicate glass to din 8903 (plates)
maximum 243°c for borosilicate glass to din 7081 (plates)
no minimum temperature limit.
the glass discs / plates are toughened by a thermal treatment, the surfaces polished, and the edges ground smooth. certificates:
- to be supplied against extra charge to din en 10204
- individual pressure tests special versions / options:
- rectangular glass plates
- fused glass / metal discs to din 7079
- laminated glasses of different diameters and thicknesses
- glass discs of different diameters and thicknesses, made from only one glass block
- special dimensions
- drilled holes complementary products:
sightglasses to din 28120 or similar, din 28121, for pn 0 (lightweight version), similar to din 11851, rectangular and d-ended sightglasses, sightflow indicators and their accessories