Round soda-lime glass according to and following DIN 8902 | ACI Industriearmaturen GmbH

Round soda-lime glass according to and following DIN 8902

Product specification: Round sight glass panels

Material: Soda-lime glass

You will find removal rates and further information on the glass in our info data sheet

INFO Data sheet Round sightglass panels according to and in accordance with DIN 8902 – (1.13 MB)

Soda-lime glasses are required wherever visual inspection of processes in containers must be ensured under pressure, at low thermal and chemical stress.

Operating conditions:

Temperature: 150°C / 302 °F long-term

Pressure: depending on diameter and thickness

Calculation of the pressure resistance: TOOL - Glass consultant soda-lime glass

Technical information:

Coefficient of expansion at 20 °C / 300 °C (68 °F / 572 °F) : 9,5 x 10–6 K–¹

Thermal shock resistance: 150 °C / 302 °F

Chemical resistance:

Water resistance DIN ISO 719/720: Hydrolysis class 1

Acid resistance DIN 12116: Acid class 1

Alkali resistance DIN 52332: Alkali class 2

Permissible material defects:

Round bubbles enclosed in the glass may have a maximum diameter of 2 mm. Oval bubbles must not exceed the value (length + width)/2 = 2 mm. Pointed bubbles are not permitted.

Permissible bubble frequency

Bubble diameter d3  Permissible bubble frequency
d3 < 0,3 3 pieces per cm² visible surface
0,3 ≤ d3 ≤ 0,5 10 pieces per sight glass plate
0,5 < d3 ≤ 1 4 pieces per sight glass plate
1 < d3 ≤ 2 2 pieces per sight glass plate



Dimensional tolerances:

The dimensional tolerances are in accordance with DIN 8902 for sightglass panels made of soda-lime glass.

Dimensional tolerances according to DIN 8902

Diameter  Tolerance
up to 125 mm ± 0,5 mm
125 to 200 mm ± 0,8 mm
over 200 mm ± 1,0 mm
Thickness
10 to 20 mm ± 0,50 mm
over 20 mm ± 0,80 mm
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