Douglass

Tempered Borosilicate Level Sight Glasses DIN7081 – Reflex

Made of borosilicate glass, it is used in numerous applications where both chemical resistance and low thermal expansion coefficient are required. Due to the fact that the glass has reflection prisms, the light spectrum is reflected in such a way that where there is liquid it is completely opaque and where there is no liquid it is bright. These are mainly used in the petrochemical industry, refineries and general applications.

REQUEST A QUOTE

Category:

Made of borosilicate glass, it is used in numerous applications where both chemical resistance and low thermal expansion coefficient are required. Due to the fact that the glass has reflection prisms, the light spectrum is reflected in such a way that where there is liquid it is completely opaque and where there is no liquid it is bright. These are mainly used in the petrochemical industry, refineries and general applications.

Type of Crystal PSI °C
Non-corrosive fluid at room temperature, without steam, without chemical attack on the glass; in direct contact with the glass 4000 30
Non-corrosive fluid at room temperature, without steam, without chemical attack on the glass; in direct contact with the protective mica (only for flat sight glasses) NA NA
Hot fluid or saturated vapor in direct contact with the glass 500 250
Hot fluid or saturated vapor in direct contact with the protective mica (only for flat sight glasses) NA NA
Radio
r
Width
b
Length
l
Number 2 3 4 5 6 7 8m 9 10 11
30mm 15mm 140 mm 165 mm 190 mm 220 mm 250 mm 280 mm 320 mm 340 mm
34mm 17mm 5-1/2” 6-1/2” 7-1/2” 8-5/8” 9-7/8” 11” 12-5/8” 13-3/8” 370 mm 400 mm
Chemical properties Hydrolytic resistance HGB 1 (ISO 719)
Acid resistance Class S1 (ISO 1776)
Alkaline resistance Class A2 (ISO 695)
Chemical composition SiO2 Minimum 80% content
B2O3 Minimum 13% content
Na2O + K2O Minimum 4,5% content
Search
×
Scroll to Top