MetaClamp® Sanitary Sight Glass Window

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.

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

Metaglas Sanitary Sight Glass Dimensional Drawing

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.