Maxos
Maxos
MAXOS® safety sight glasses, tempered
MAXOS® safety sight glasses are necessary in all places where the observation of processes in closed vessels must be guaranteed.
The high level of safety can be reached by using a special borosilicate glass with good chemical resistance, exceptional purity and homogeneity. A thermal toughening, in combination with the low thermal expansion which is typical for this borosilicate glass, leads to an especially high thermal shock resistance.
MAXOS® sight glasses are manufactured in two different standard versions: they can be circular or rectangular. Rectangular sight glasses can be either reflex or transparent. The reflecting glasses make safe and easy meter-reading possible from a greater distance. The transparent rectangular glasses are employed in spots with particularly high requirements.
For further information, concerning for example dimensions, chemical and thermal shock resistance of the MAXOS® glasses, please download our catalogue or look on our homepage under Materials -> Glass.
Formula for calculating the pressure resistance of round glass discs
s thickness, in mm
C shape factor 0.55
p allowed positive operating pressure, in bar
Dm mean diameter of the gasket
sDV zul minimum value for the flexural strength, in N/mm2
40 N/mm2 if glass is not prestressed
100 N/mm2 if glass is prestressed
S safety coefficient=5
or:
if glass is not prestressed


