Flow Sight Glass Type 531 – PN 10/63

Flow sight glass with weld ends

The flow sight glass type 531 has been designed as a robust welded construction, representing a particularly resistant version of our flow sight glasses, suitable for working pressures up to 63 barg.

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Type 531 can be easily welded into existing pipelines and, thanks to its flexible design, it is possible to manufacture special lengths according to customer requirements.

Even in larger nominal diameters, type 531 allows achieving working pressures of 63 barg or higher.

TECHNICAL DATA – Flow Sight Glass Type 531
Flange Material:Stainless Steel 316 Ti – 1.4571
Other alloys according to customer specifications
Form:Flow Sight Glass
Gaskets:Frenzelit novaphit® MST XP
KlingerSil® C4400
Garlock Gylon®
PTFE (pure or modified)
More than 50 other sealing materials available upon request
Nominal Size (DN):DN40 – DN400
Nominal Pressure (PN):PN10 – PN63
Temperature / Glass:up to 280 °C with borosilicate glass DIN 7080
Options:SGW cleaning brush (PTFE or silicone)
LED lighting, available for Ex and non-Ex zones
FEP or Halar® coating for additional chemical protection
Mica protection disc against temperature and steam
Double Glass

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