The Model A Flange unit mounts on standard ANSI B16.5 (2" to 8") flange accommodations, and can be manufactured to meet a wide range of pressure and temperature requirements.
The lens and packing in the Model A are contained by a retainer ring on the process side of the flange. Various materials of construction and applications requiring DIN standards or non-ANSI flanges are available upon request.
| Materials |
| Flange: |
316 or 304 Stainless Steel SA-182; Carbon Steel SA-105 |
| Compression Ring: |
304 Stainless Steel SA-351; Carbon Steel SA-519 |
| Snap Ring: |
304 Stainless Steel SA-351; Carbon Steel SA-519 |
| Retainer Ring: |
316 or 304 Stainless Steel SA-351; Carbon Steel SA-519 |
| Lens: |
Two-Piece Laminated Tempered Soda Lime (Standard); Tempered or Annealed Borosilicate; Quartz; Lexan; Acrylic; Mica Shields |
| Lens Cushion Gaskets: |
TeflonⓇ GrafoilⓇ GylonⓇ Blue-GardⓇ etc. |
| Lens Packing: |
Combination TeflonⓇ Impregnated and VitonⓇ (Standard); Graphite; FDA TeflonⓇ etc. |
| Compression Screws: |
18-8 Stainless Steel; Carbon Steel SA-193* |
*By request only
This sight glass has been certified as maintaining a Quality Assurance System in accordance with the Pressure Equipment Directive 97/23/EC (PED) Annex I, Paragraph 4.3 by the Certification Body 0036 of the TÜV Industrie Service GmbH.
