The standard version is fitted with flanges made of 1.4571 (316Ti) stainless steel – a material proven for its excellent corrosion resistance and durability in industrial applications.
In addition, special materials such as Hastelloy®, duplex steels or other high-performance alloys can be supplied on request.
The glass tube is made from industrially tested borosilicate glass 3.3, in accordance with DIN ISO 3585, and is characterised by its high thermal and chemical resistance and excellent optical properties.
Sealing is achieved using flat gaskets that can be selected individually from a wide range of materials – from standard fibre-reinforced materials to high-quality speciality materials such as PTFE (Teflon®), NBR, novaphit® MST-XP or KlingerSil® C4400.
This allows the gasket to be optimally adapted to the medium, temperature and pressure.
The design, layout, strength calculations and manufacture were carried out in accordance with the AD 2000 and PED 2014/68/EU regulations.
The flanged connection is compatible with ASME B16.5 RF 150 lbs. butt-weld flanges.
Thanks to the precise alignment between the flange, gasket and glass, the assembly is virtually free of dead spaces, making it suitable for hygienically demanding processes.
TECHNICAL SPECIFICATIONS – Tubular sight glass type 620A
| Flange Material: | Stainless Steel (316Ti) – 1.4571 Other alloys according to customer specifications |
| Form: | Tubular 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 (NPS): | ½‘ – 8’ |
| Nominal Pressure (Class): | 150 lbs |
| Temperature / Glass: | up to 280 °C with borosilicate glass DIN 7080 |
| Options: | Customized overall lengths according to the application. Impact protection covers made of PETg. Impact protection covers made of perforated plate, for locations subject to high mechanical risks. |
