The 321A model is supplied pre-assembled from the factory and can be bolted directly onto the flange in accordance with ASME B16.5 without any additional effort required.
The 321A model is constructed from high-quality 1.4571 (316Ti) stainless steel, which is highly valued by our customers. The glass used is industry-proven borosilicate glass 3.3, in accordance with DIN 7080 (or equivalent).
If the process conditions pose a problem even for highly resistant borosilicate glass, a specially adapted mica or FEP protective screen for the connection provides additional protection against steam and aggressive chemicals, such as alkalis with a pH value of up to 14.
Like other circular product displays, the 321A model can be fitted with SGW-type brushes, spray devices and lights on request.
TECHNICAL SPECIFICATIONS – Circular sight glass fitting type 321
| Flange Material: | Base Flange: 1.4571 (standard) Cover Flange: 1.4571 (standard) Other materials on request |
| Design: | In accordance with DIN 28121, but for ANSI/ASME flanges |
| Seals: | PTFE |
| Nominal size: | 2‘ to 8’ |
| Temperature / Glass: | Up to 200°C with borosilicate glass complying with or similar to DIN 7080 |
| Options: | Wiper SGW with PTFE or silicone wiper blade LED light for Ex and non-Ex areas Spraying device SVII FEP or Halar® coating Mica protection disc Special constructions |
