
The strongest, most secure sight glass elements available, Metaglas® mechanically prestressed windows, are available in a sanitary design for process applications.
Unlike some other sight glasses, Metaglas sight glasses meet the USP Type 1 standard for pharmaceutical use.
Described as offering the optics of glass and the strength of steel, these glass elements provide a level of safety, and a useful service life, well beyond that provided by conventional tempered glass or plastic in sanitary service. Even at the most extreme temperatures (as high as 536° F) or in overpressure situations, sudden, total failure – that involving leakage or explosive shattering of the glass – essentially never occurs. Also designed to be mounted in-line as a Sanitary Visual Flow Indicator and to accommadate Lumiglas Luminaires, such as the USL33 or USL35 style.
Resources
Datasheets
Sanitary Clamp Sight Glass – MetaClamp
Metaglas® Line Overview
Webcasts
How to Ensure Sight Glass Safety
How to Select and Maintain Sight Glasses for Chemical and Pharmaceutical Applications
Manuals
Installation / Operation / Maintenance Manual
Sight Glass Strength – Compression vs. Fusion White Paper
Sight Glass Application Handbook
Step by Step Guide to Sight Glass Selection
Blog Posts
Why Metaglas® Is Considered the Safest Sight Glass in the World
Application:
Sanitary MetaClamps to fit sanitary clamp connections. The MetaClamp sight glass can be used as a view port mounted on a ferrule, a “cross” for inline visual flow indication or as a light port. Materials available include 2205 Duplex Stainless Steel, Hastelloy®, Monel® and Inconel®.
Approvals and Technical Data:
- USP Class VI (tested to confirm biocompatibility)
- BPE Compliant and TÜV Approved
- Sight glass fused to metal conforming to DIN7079
- Borosilicate glass to USP Type I and DIN7080
- Standard surface finish of 10 Ra µ-in (0.25µm)
- Material to ASTM/ASME, TÜV and DIN/EN standards
- Certificate of Conformity to EN 10204-3.1B or 3.1A
- Pressure Equipment Directive 97/23/EG
Standard Tube OD | d1 | d2 | d3 | S | PSIG@
450ºF |
||||
Inch | MM | Inch | MM | Inch | MM | Inch | MM | ||
1/2”, 3/4” | 0.98 | 25 | 0.71 | 18 | 0.39 | 10 | 0.39 | 10 | 230 |
1”, 1-1/2” | 1.99 | 51 | 1.61 | 41 | 0.98 | 25 | 0.39 | 10 | 230 |
2” | 2.52 | 64 | 2.05 | 52 | 1.18 | 30 | 0.39 | 10 | 230 |
2-1/2” | 3.05 | 78 | 2.51 | 64 | 1.38 | 35 | 0.47 | 12 | 230 |
3” | 3.58 | 91 | 2.99 | 76 | 1.57 | 40 | 0.39 | 10 | 150 |
3-1/2” | 4.17 | 106 | 3.54 | 90 | 1.97 | 50 | 0.39 | 10 | 150 |
4” | 4.69 | 119 | 3.97 | 101 | 2.17 | 55 | 0.47 | 12 | 150 |
6” | 6.57 | 167 | 5.98 | 152 | 2.95 | 75 | 0.63 | 16 | 85 |
8” | 8.56 | 218 | 7.80 | 198 | 3.94 | 100 | 0.71 | 18 | 85 |
10” | 10.55 | 268 | 9.65 | 245 | 4.72 | 120 | 0.79 | 20 | 85 |
12” | 12.56 | 319 | 11.81 | 300 | 5.51 | 140 | 0.87 | 22 | 85 |
Note: Temperature and pressure apply to sightglass only.