Metaglas® Sanitary Sight Window (Sight Glass) Series MetaClamp® - L.J. Star

The strongest, most secure glass elements available, Metaglas® mechanically pre-stressed windows, are now available in a sanitary design for process applications. These new MetaClamp® sanitary sight windows are 3A approved.

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 accommodate Lumiglas Luminaires, such as the USL33 or USL35 style.

Approvals and Technical Data:

- USP Class VI (tested to confirm biocompatibility)
- TÜV Approved and BPE Compliant
- Sight glass fused to metal conforming to DIN7079
- Borosilicate glass to 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

Because Metaglas® is created with an exterior ring of Duplex Stainless, Hastelloy®, etc., it can be machined to fit many different connection types. A few examples are listed and shown below.

  • MetaClamp® for Lumiglas® Lights
  • “I” Line Fittings
  • Bevel Seat Fittings
  • John Perry Fittings
  • APV Fittings
  • Swagelok TS Fittings
  • Tuchenhagen Varivent®
  • BBS-Systems’ Quick Connect
  • Sanitary in-line sightglass
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