METAGLAS – Type 99.NA Sight Glass

RX Code: QMS

Sight glass for NA-Connect Flush mounted fitting


  • Extreme compact design
  • Easy installation and maintenance
  • Suitable for aseptic pharmaceutical and food applications (3-A standard)
  • Long working time
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    The Type 99.NA Sight Glasses from Metglas are designed to fit in NA-connection systems to offer clear visibility of the process.

    The Metaglas Sightglasses have an extreme compact construction and are suited for aspectic applications within the pharmaceutical industry. The Metaglas Type 99.NA Sight Glassses are designed to fit in NA-connection systems to offer clear visibility of the process.

    The sight glasses are easy to install, have easy validation and connection for sterilization and cleaning. Next to this, the dead leag is eliminated by a standard ferrule connection, which is why air bubbles and unsolved trapped material is avoided.

    Sight glasses from Metaglas are characterized by a sight glass that has been fused into a steel ring. The different expansion coefficients of glass and metal cause a compressive stress in the glass. The mechanical prestress commands a higher security compared to thermally prestressed glass; an unexpected rupture is fully excluded and the glass has an extreme resistance to shock and temperature. The sight glasses meet the requirements according to ASME BPE.


    • Light type 99.NA.USL33
    • NA-connect flange 316 L (1.4435)

    Read more about Brand: METAGLAS

    Sizes ASME BPE ½” to 4 ½”, DIN DN10 to 100, ISO DN8 to 100 (see datasheet)
    Max. pressure 7 bar
    Temp. range Duplex (1.4462) : -30°C to +280°C (standard)
    Alloy C22 (2.4602) : -60°C to +300°C (option)
    Caution! Installed with light 90°C (ambient temperature)
    Connections NA-Connect
    Materials Glass: Borosilicate volgens DIN7080/DIN7079
    Ring: Duplex(1.4462) (standard),  Alloy C22 (2.4602) (option). Alloy C4 (2.4610)
    Surface finish ASME BPE SF-2.4.1-1, SF1
    Certificates standard 3.1 material according to EN 10204:2004


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