Sight Glass has proven to be the solution for standard
sight glass problems. These mechanically prestressed
glasses, fused with a dimensionally adapted metal frame
ring are an alternative to conventionally annealed and
tempered glass discs. The advantage for these glasses
is the glass will not be subject to sudden unexpected
rupture. At worst any crack that may develop may only
slightly affect visibility.
tests have demonstrated that mechanically prestressed
glass even after formation of a large number of cracks
remains leak tight at pressures far exceeding the design
pressure due to the homogeneous compressive stress constant
throughout the entire cross section so the equipment
can be kept operational.
Advise of Diameter and Pressure Requirements.
Glass Fused to Metal Ring
Extremely Long Service
For Many Applications
Pressure Ratings based upon size.
Metal Ring: Duplex SS,
Carbon Steel, Hastelloy C