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 / WDT / WR / WDR.
The glass plates are sized to be mounted into the rectangular or D-ended sightglass fittings LSG (R,RR) / RSG ( R,RR)
Nominal pressure: Rated to the DIN standards. Versions with central bore hole for wiper application on request.
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.
- 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
Sightglasses to or similar to DIN 28120 or DIN 28121, for PN 0 (lightweight version), similar to DIN 11851, rectangular and d-ended sightglasses, sightflow indicators and their accessories