Tubular sight glass type 620A Class 150

Product information

The ACI tubular sight glass type 620A offers a complete 360° view of the process medium through a borosilicate glass cylinder. Surrounded by two high-quality flanges made of stainless steel or steel, it allows for comprehensive visual monitoring of your system.

The standard version is equipped with flanges made of stainless steel 1.4571 (316Ti) – a material that has proven itself with excellent corrosion resistance and durability in industrial applications. Additionally, special materials such as Hastelloy®, duplex steels, or other high-performance alloys can be implemented upon request.

The glass tube is made of industrially tested borosilicate glass 3.3 according to DIN ISO 3585. It impresses with high temperature and chemical resistance as well as very good optical properties.

The sealing is done with individually selectable flat gaskets from a wide range of materials – from classic fiber material seals to high-quality special materials such as PTFE (Teflon®), NBR, novaphit® MST-XP or KlingerSil® C4400. This allows the gasket to be optimally matched to the medium, temperature, and pressure.

The design, layout, strength calculation, and manufacturing were carried out in accordance with the regulations AD 2000 and the PED 2014/68/EU. The flange connection fits, however, to counter flanges ASME B16.5 RF 150 lbs.

Thanks to the precise adjustment of flange, gasket, and glass, the fitting is almost dead-space-free and therefore suitable for hygienically demanding processes.

For areas of plants with increased mechanical hazards – e.g., when installed under walkways – we recommend optionally available impact protection covers. These reliably protect the glass tube from falling objects and minimize the risk of unplanned outages or damage.