The strongest, most secure sight glass elements available, Metaglas® mechanically prestressed windows, are now 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.
• Strongest, safest, most reliable sight glass
• Mounting: Sanitary clamp connection
• Glass: Borosilicate or Soda Lime
• Metal: Duplex or Hastelloy
• Up to 572° F
• FV to 230 PSI
• Approvals: USP Class VI, BPE Compliant, USP Type I borosilicate glass
• Sizes: 1/2 in - 12 in
Standard Tube OD | d1 | d2 | d3 | S | PSIG @ 450°F |
1/2 in & 3/4 in in | 25 mm (0.98 in) | 18 mm (0.71 in) | 10 mm (0.39 in) | 10 mm (0.39 in) | 230 |
1 in & 1-1/2 in | 51 mm (1.99 in) | 41 mm (1.61 in) | 25 mm (0.98 in) | 10 mm (0.39 in) | 230 |
2 in | 64 mm (2.52 in) | 52 mm (2.05 in) | 30 mm (1.18 in) | 10 mm (0.39 in) | 230 |
2-1/2 in | 78 mm (3.05 in) | 64 mm (2.51 in) | 35 mm (1.38 in) | 12 mm (0.47 in) | 230 |
3 in | 91 mm (3.58 in) | 76 mm (2.99 in) | 40 mm (1.57 in) | 10 mm (0.39 in) | 150 |
3-1/2 in | 106 mm (4.17 in) | 90 mm (3.54 in) | 50 mm (1.97 in) | 10 mm (0.39 in) | 150 |
4 in | 119 mm (4.69 in) | 101 mm (3.97 in) | 55 mm (2.17 in) | 12 mm (0.47 in) | 150 |
6 in | 167 mm (6.57 in) | 152 mm (5.98 in) | 75 mm (2.95 in) | 16 mm (0.63 in) | 85 |
8 in | 218 mm (8.56 in) | 198 mm (7.80 in) | 100 mm (3.94 in) | 18 mm (0.71 in) | 85 |
10 in | 268 mm (10.55 in) | 245 mm (9.65 in) | 130 mm (4.72 in) | 20 mm (0.79 in) | 85 |
12 in | 319 mm (12.56 in) | 300 mm (11.81 in) | 140 mm (5.51 in) | 22 mm (0.87 in) | 85 |
Note: temperature and pressure apply to sightglass only
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